Commercial Heating Services in Hemel Hempstead
Reliable commercial heating support for businesses across Hemel Hempstead and the surrounding Hertfordshire area, including boiler servicing, repairs, installations, planned maintenance and heating upgrades.

Communal heating
From housing association properties to sheltered accommodation, we have the capacity to handle any heating challenge your property throws at us!
Commercial heating specialists supporting Hemel Hempstead businesses
Happy Heat provides professional commercial heating services for businesses across Hemel Hempstead and the surrounding Hertfordshire area. We support commercial premises that need reliable heating, experienced engineers and practical support tailored to how their building operates.
From commercial boiler servicing and repairs through to planned maintenance, heating upgrades, installations and plant room projects, we help businesses maintain dependable systems and reduce the risk of unexpected disruption.
We support customers across Hemel Hempstead, Kings Langley, Berkhamsted, St Albans, Watford and surrounding areas, including businesses based around Maylands Business Park and other commercial estates.
Built for reliable commercial heating systems
Commercial premises across Hemel Hempstead can have very different heating demands, from older systems that need careful upgrading to larger installations serving busy offices, industrial units and business parks.
Happy Heat can assess the wider heating system, including boilers, controls, pipework and plant room equipment, before recommending the most practical repair, upgrade or replacement route.
For businesses across Hemel Hempstead, we focus on improving reliability, reducing the risk of unexpected faults and helping heating systems perform effectively over the long term.
Why businesses trust Happy Heat!
What you get if we become your commercial heating partners:

Gas Safe Registered
We are registered to work on domestic, commercial and industrial premises.
Over a century of experience
As a family business we have over 100 years of combined industry experience.
Fully insured for £5m
We are fully insured for up to £5,000,000 in public liability.

Safe Contractor Accredited
We are SSIP accredited, meaning we meet the highest recognised safety standards for contractors.

DBS Enhanced checked
Our engineers are Enhanced DBS checked and fully vetted, giving you peace of mind when we work at your home or workplace.

100% Positive feedback
We take pride in our positive reputation, proven by our 100% customer satisfaction rating on all major review platforms.
Supporting Businesses Across Hemel Hempstead
Hemel Hempstead has a strong commercial base, with offices, industrial units, warehouses and business parks across the town, particularly around Maylands Business Park.
For businesses operating from these sites, dependable heating is important for keeping staff comfortable, premises operational and disruption to a minimum throughout the year.
Happy Heat supports businesses across Hemel Hempstead, Kings Langley, Berkhamsted, St Albans, Watford and surrounding areas with commercial heating servicing, repairs, maintenance, installations and system upgrades.
Offices and business premises
Industrial units and warehouses
Planned commercial heating maintenance
Boiler repairs, upgrades and installations

We cover Hemel Hempstead and surrounding areas
We support businesses across Hemel Hempstead, Kings Langley, Berkhamsted, St Albans, Watford and surrounding Hertfordshire areas.
Tell us what your building needs
Give us a ring and we'll quickly ask a few questions to diagnose the problem. If it's something simple, like low pressure, we'll help you fix it right there on the phone!
We arrange the right support
If the phone fix doesn't cut it, don't fret! We'll schedule a visit to track down the gremlin living in the boiler to get that heat flowing again!

10-year warranty with all new Vaillant boiler installations
Don't just take our word for it!
We pride ourselves in our reviews and 100% customer satisfaction. Want to leave us a review? Super, check out our review page!
Posted on Google![]()
Debbie Bruce8 days agoTrustindex verifies that the original source of the review is Google.
As reflected above exceptional service, polite professional, very friendly and prepared to go above and beyond. Thank you Archie and Jack.Posted on Google![]()
Neil Harper23 days agoTrustindex verifies that the original source of the review is Google.
We had a wonderful experience with Happy Heat. We needed fairly significant work and Martin and Lauren came over and were with us for ages going through the options, looking at absolutely everything, having a chat about our needs and advising accordingly. We then had John and Jack out for the works and they were absolutely exceptional. A couple of issues came up (not related to them but boiler location and supplier issues) and they went absolutely above and beyond. They really did everything and were so kind when the works over ran even though it wasn’t in their control whatsoever. They were extremely thorough with the radiator clean and always left the area clean and tidy in between days, we’re always happy to explain things to us and answer any questions. Wouldn’t hesitate to use Happy Heat in the future.Posted on Google![]()
James25 days agoTrustindex verifies that the original source of the review is Google.
Many thanks to Martin and his team for doing a fantastic job upgrading our boiler and removing the old warm air heating system. Everyone was professional and friendly throughout, and we’re really pleased with the end result. Would highly recommend!Posted on Google![]()
Ylli Zymberi42 days agoTrustindex verifies that the original source of the review is Google.
Very fast and amazing service i got my boiler replaced and could not be more happy extremely polite and professional would definitely recommendPosted on Google![]()
Tommy Saunders42 days agoTrustindex verifies that the original source of the review is Google.
Incredible customer service, Martin was very helpful with explaining everything that was required to make the job nice and smooth for everybody very thankful for my new boiler😁Posted on Google![]()
George42 days agoTrustindex verifies that the original source of the review is Google.
Great installation of a full heating system lovely new boiler and radiators could not recommend them enough!Posted on Google![]()
alfie drury42 days agoTrustindex verifies that the original source of the review is Google.
Great customer service very happy with my new valiant boiler would definitely recommend.Posted on Google![]()
Jolene Sher81 days agoTrustindex verifies that the original source of the review is Google.
We had our boiler and 6 radiators replaced with Happy Heat. Lauren the heating engineer was excellent at diagnosing the problems and deciding the plan of action going forward. Very honest and clear with what will happen. Even when a slight hiccup of when the timing of the job starting was happening, it was handled with great care and professionalism. Really made sure we were happy and sure about our plan of action. The guys who worked on the job - John, Jack, Archie and Lawrence were expectional. They worked so hard, with long hours to get the job done in a timely manner. They cleaned up so well after the job and you can tell they took great pride in their work. And it was over the worst of the heat wave heat and I cannot thank them enough for grafting so hard in such hot conditions. They were always super friendly and lovely to my 4 year old daughter and good communicators with us. If I had any queries Lauren or Martin where always on hand to discuss anything. I wouldn't hesitate at all to recommend this family run local to Bushey business.Posted on Google![]()
Valeria Burd85 days agoTrustindex verifies that the original source of the review is Google.
Very good service - friendly, good communicatuon, well pricedPosted on Google![]()
Andriy Buryak86 days agoTrustindex verifies that the original source of the review is Google.
Our old boiler (over 20 years old!) finally gave up, and choosing Happy Heat turned out to be the best decision we could have made. Martin, the owner, came out twice to assess everything properly. Instead of rushing into a replacement, he spent time working out the best solution, making every effort to keep our existing cupboard and reuse the current flue opening. He recommended a boiler that was the best option both technically and financially, and it was obvious he was focused on finding the right solution for us rather than the most expensive one. Communication throughout the whole process was fantastic. The quote system and regular messages kept us updated every step of the way, so we always knew what was happening. On installation day, engineers John and Jack arrived right on time and worked incredibly hard all day. They had the tricky job of removing and then reinstalling the cupboard around the boiler, and they did it with great care. Everything was left neat and tidy. During the installation, it turned out the pump also needed replacing. Lauren and Martin were brilliant once again, helping us find the best solution without unnecessary cost and arranging for the engineers to come back the very next day to finish everything. What really stood out was how everyone at Happy Heat treated us. We never felt like just another customer—it genuinely felt like dealing with people who cared and wanted the best outcome for us. Professional, honest, friendly, and incredibly helpful from start to finish. I wouldn't hesitate to recommend Happy Heat to anyone looking for a trustworthy heating company. Five stars, well deserved!Posted on Google![]()
Martin West106 days agoTrustindex verifies that the original source of the review is Google.
We used Happy Heat to install a new boiler and radiators. Really happy with the service. The team were well mannered, worked very hard, were efficient and tidied up really well after themselves. Would definitely recommend. Thanks!Posted on Google![]()
Christy C132 days agoTrustindex verifies that the original source of the review is Google.
I’m very satisfied with the boiler installation service. The engineer John was professional, efficient, and went above and beyond expectations by fixing a faulty MCB and adjusting the kitchen pipework. Overall a smooth experience and I would recommend this company.Posted on Google![]()
andrea cursons142 days agoTrustindex verifies that the original source of the review is Google.
Just wanted to thank Lauren for visiting me and explaining everything we needed when our boiler died. Lauren explained all the products that we could add on and how those products all work and how it would benefit our new boiler. I also want to say a massive thank you to Jamie who was our boiler installer he managed to fit our new boiler and Hive heating in a day and did a fantastic job, he cleared all the rubbish from our old boiler and left no mess anywhere. I would highly recommend this family run local heating company if you need a new boiler or if you need your boiler repaired or serviced. Thanks again for the wonderful service that you provided.Posted on Google![]()
Eileen McCarthy147 days agoTrustindex verifies that the original source of the review is Google.
Just had a new boiler installed by Happy Heat, excellent job, clean and tidy, fully recommend them, 100% thanka so muchPosted on Google![]()
James McCarthy147 days agoTrustindex verifies that the original source of the review is Google.
I've just had my.heating done by a Company called Happy Heat.They were brilliant. Very neat and tidy.Thanks guys.Posted on Google![]()
Sharron Marley163 days agoTrustindex verifies that the original source of the review is Google.
Highly recommended, newly installed boiler very quick & professional. Friendly & very clean & tidy. Thank you!!!!!!Posted on Google![]()
Sunil Kansagra164 days agoTrustindex verifies that the original source of the review is Google.
Fabulous!Posted on Google![]()
Asad Tamimi170 days agoTrustindex verifies that the original source of the review is Google.
Martin was prompt, friendly and polite. He explained everything to me throughout diagnosing the issue with my underfloor heating and a plan to fix it. Will happily use again for any future problems.Posted on Google![]()
Flotech Heating & Plumbing Ltd172 days agoTrustindex verifies that the original source of the review is Google.
We have used Happy Heat as sub contractors for a few years now and they have always been reliable and quality of work is excellent. I understand this review is B2B but none the less very good company to work with.Posted on Google![]()
Edon Rekaj174 days agoTrustindex verifies that the original source of the review is Google.
Just wanted to say that I love my new boiler, it looks so good I am really happy with this, thanks!Posted on Google![]()
Chloe Chappell176 days agoTrustindex verifies that the original source of the review is Google.
Very pleased with my newly installed boiler, gentleman was very professional & friendly. Highly recommend🌟Posted on Google![]()
Gail176 days agoTrustindex verifies that the original source of the review is Google.
Happy Heat provided a great service. Serviced my boiler and added me a new control panel Minimal fuss, very polite and would happily have them back for all my heating needsPosted on Google![]()
Michael Georgiou176 days agoTrustindex verifies that the original source of the review is Google.
Martin did a great job, serviced my boiler, replaced pipework for new gas hob and issued a gas safety certificate for appliances. Tidy work, well pleasedPosted on Google![]()
Bianka Dontas176 days agoTrustindex verifies that the original source of the review is Google.
⭐️⭐️⭐️⭐️⭐️ Huge shoutout to Happy Heat for saving the day (and my sanity)! 🔥 They came out today to fit a brand new boiler and thermostat, and honestly… I’m almost excited for cold weather now. Almost. 😄 From start to finish, the service was spot on — friendly, professional, and no messing around. They explained everything in plain English (no confusing jargon), worked efficiently, and left everything clean and tidy. Bonus points for being genuinely lovely people too! The new setup is working perfectly, and I can already tell it’s going to make a big difference. Warm house, happy me! If you’re thinking about getting your boiler sorted, don’t even hesitate — Happy Heat absolutely nailed it. 👏🔥Posted on Google![]()
Aidan Callan176 days agoTrustindex verifies that the original source of the review is Google.
I am more than happy with my new boiler very friendly and professionalPosted on Google![]()
Iliya Anvar176 days agoTrustindex verifies that the original source of the review is Google.
Perfect service. Perfect outcome.Posted on Google![]()
Judith Garnett185 days agoTrustindex verifies that the original source of the review is Google.
100% happy. Brilliant job and totally trustworthy.. Reliable and a pleasure to have in my home - i didn't feel uncomfortable.Posted on Google![]()
Minesh Patel198 days agoTrustindex verifies that the original source of the review is Google.
Happy Heat are amazing, they provided an amazing customer service experience from the onset to follow through and further to the completion of the work. The service was quick, great value for money and it's certainly the people, the experience, and the quality of the work that was absolutely gold class....Posted on Google![]()
Jay Shodimu199 days agoTrustindex verifies that the original source of the review is Google.
An expert, helpful, straight forward, and professional - I would recommend Happy Heat and Martin for the work done. Very much appreciated.Posted on Google![]()
Manager201 days agoTrustindex verifies that the original source of the review is Google.
My Boiler broke down at the most inconvenient time, luckily I found Martin at happy heat who came and fixed it in no time! Fair pricing, efficient & extremely polite! Would 100% recommend 🙏🏻Posted on Google![]()
Wojciech Malinowski206 days agoTrustindex verifies that the original source of the review is Google.
Got a new boiler installed in 3 business days from informing me that I need one. Super professional and kind.Posted on Google![]()
Nicola Tillman214 days agoTrustindex verifies that the original source of the review is Google.
I used Happy Heat for a boiler service today and Martin couldn’t have been nicer. He was quick to attend, friendly and extremely thorough. I couldn’t have asked for a better service. Definitely recommend!Posted on Google![]()
Christine Wicks220 days agoTrustindex verifies that the original source of the review is Google.
I met Martin and his lovely wife Lauren about three years ago when they came to services the boiler. Martin always lets you know when the service is due and keeps you informed of the day and time of the appointment. He's always happy and efficient but also takes the time to have a chat as well as doing a brilliant job Thank you MartinPosted on Google![]()
Anthea Spensley221 days agoTrustindex verifies that the original source of the review is Google.
Excellent service - efficient and friendly. Would recommend and use againPosted on Google![]()
Koen233 days agoTrustindex verifies that the original source of the review is Google.
Excellent service 🌟Posted on Google![]()
Jane Jacobson236 days agoTrustindex verifies that the original source of the review is Google.
My Elderley Mother had a leak on her Combi boiler Martin was amazing came out fixed the problem and kept in contact with me by phone letting me know the time he would be here and that there was traffic and would be very slightly late which is great customer service He is very reasonably priced 100% reccomend Happy heating to anyone ☺️Posted on Google![]()
aldrich dsouza236 days agoTrustindex verifies that the original source of the review is Google.
Great communication from start till the end. Boiler wasn't heating. There was a single flashing light. Martin was quick to identify the issue and give his valuable feedback. He also contacted the Boiler company so that they could come out and replace the parts that were causing the problem.Posted on Google![]()
wendy droznika241 days agoTrustindex verifies that the original source of the review is Google.
We absolutely recommend Happy Heat. They are professional and informative and get the job done. Martin has a great attitude and friendly manner and nothing was too much trouble for him. Thanks to Happy Heat we now have a fully working and serviced boiler.Posted on Google![]()
lorraine leavens244 days agoTrustindex verifies that the original source of the review is Google.
Such a lovely company, Martin was really good and gave best advicePosted on Google![]()
Luis255 days agoTrustindex verifies that the original source of the review is Google.
Very good service, identified the issue quick. And a Good PricePosted on Google![]()
Byron258 days agoTrustindex verifies that the original source of the review is Google.
Highly recommend Martin for any boiler issues. He arrived on time, was very respectful of my input on the problem and fixed it efficiently. You can tell he’s genuinely passionate about his trade. Great service.Posted on Google![]()
Alex Lyons260 days agoTrustindex verifies that the original source of the review is Google.
Very happy with my experience using Happy Heat, really friendly, efficient and well priced. Would definitely use again and recommend to anyone.Posted on Google![]()
Patrick Lee262 days agoTrustindex verifies that the original source of the review is Google.
It seems to be quite rare to find someone who actually answers the phone, can communicate clearly, reacts quickly, delivers on promises, does a good job, and charges a reasonable amount. That was my experience of Happy HeatPosted on Google![]()
Georgina Harrington264 days agoTrustindex verifies that the original source of the review is Google.
I would recommend Happy Heat. Very Professional. Great service.Posted on Google![]()
Paul O'Dell269 days agoTrustindex verifies that the original source of the review is Google.
Extremely helpfull and got us up and running over the phone when we had an issue. Use this company for all our heating requirements and never disappointPosted on Google![]()
john portway270 days agoTrustindex verifies that the original source of the review is Google.
Martin and his team were efficient and friendly as very good value for moneyPosted on Google![]()
Raj271 days agoTrustindex verifies that the original source of the review is Google.
Absolutely amazing . Martin was very quick, reliable and very honest with the work carried out …. Very trustworthyPosted on Google![]()
Jan271 days agoTrustindex verifies that the original source of the review is Google.
Fantastic service once again from Martin and Lauren at Happy Heat! This was an emergency call-out due to a leak, and they were with us within 2 hours of my call, which was a huge relief! Their customer service is second to none — professional, efficient, and genuinely friendly. Martin and Lauren are a lovely, super friendly couple who clearly care about their customers. This is our third time using their services now, and they continue to be reliable, trustworthy, and excellent every time. Highly recommend Happy Heat to anyone looking for top-quality service! Thank you to you both once again!Posted on Google![]()
Pratima Glazer272 days agoTrustindex verifies that the original source of the review is Google.
Martin provides an excellent service from start to finish: response for a quote for a boiler replacement, coming to review the work required, providing a quote, that being a cost effective quote. Where other quote providers were quoting for scaffolders, Martin was cost effective in that he hired a Cherry Picker to install the boiler flue. He and Lauren got the job done in 1 day. Covered the carpets, tidied up and leaving the room clean after they had finished installing the boiler. He registered the Vaillant boiler to activate the warranty and also at the Council too. He and Lauren are really lovely and friendly people to deal with. I cannot recommend them highly enough.Posted on Google![]()
Kris273 days agoTrustindex verifies that the original source of the review is Google.
Quick call to enquire about a heat source pump issue I was having. He was friendly and honest, and let me know he wouldn't be the best person to look at it.Posted on Google![]()
Arya daya275 days agoTrustindex verifies that the original source of the review is Google.
Had a great experience with Happy Heat Boiler Service. The engineer was punctual, professional, and explained everything clearly. The boiler was serviced efficiently and left working perfectly. Friendly service and fair pricing — would definitely recommend.Posted on Google![]()
Jo Reffin Hunter293 days agoTrustindex verifies that the original source of the review is Google.
Martin and Lauren have carried out a few jobs for me including several annual boiler services. Prices are reasonable, they are super friendly, very knowledgeable and willing to give advice and explain to a client not in the know, and they always manage to fit you in. Would highly recommend. Best heating company I have found locally in 22 years of living in the area.Posted on Google![]()
Jude Nicholas294 days agoTrustindex verifies that the original source of the review is Google.
Good communication, clear pricing and really neat and tidy, I have no hesitation in recommending this family company.Posted on Google![]()
Anthony Underwood295 days agoTrustindex verifies that the original source of the review is Google.
Had my bolier serviced by Happy Heat again this year - efficient, friendly and trustworthy. Need I say more!Posted on Google![]()
Shelley Marsh295 days agoTrustindex verifies that the original source of the review is Google.
Woke up to no heating and no hot water. Texted Martin who said he would be with me by 10 am. He was as good as his word. He found the problem, and fixed it within 30 minutes. Highly professional and made sure that everything clean and neat before he left - which I really appreciated. Efficient service and a competitive price. I would highly recommend Martin and Happy Heat.Posted on Google![]()
Sammie299 days agoTrustindex verifies that the original source of the review is Google.
Martin and his team are fantastic. I run a busy London NHS GP Practice and Martin is always quick to respond and help us. Over the last few years he has installed us a new boiler and pump at great rates and is always clean and respectful of our busy space with patients. Only last week our pump broke and he was over within a few hours to help us get the heating on. Would 100% recommend to all commercial businesses.Posted on Google![]()
Mandy Mills304 days agoTrustindex verifies that the original source of the review is Google.
Happy Heat are always helpful and at the end of the phone. They do a great job in servicing our boilers, thank you. Great Dunmow Primary School.Posted on Google![]()
Vik P314 days agoTrustindex verifies that the original source of the review is Google.
Martin from Happy Heat did an outstanding job fixing our electric boiler. He was clear and thorough in explaining every step, very polite, and genuinely friendly throughout. He came out on multiple visits, changed the main board, reconnected the wireless thermostat, and made sure everything was working perfectly. Martin even called the boiler manufacturer to double‑check that all instructions were followed and the system was installed correctly. At the end, he repressurised the system and checked that both the heating and domestic hot water were working as they should. Highly recommend Martin and Happy Heat for any heating and gas work.Posted on Google![]()
Gee Law314 days agoTrustindex verifies that the original source of the review is Google.
Martin and Lauren are an amazing duo!They were friendly, communication was really easy and they were able to sort out the problem with my boiler with ease. I’ll be using Happy Heat for all my future boiler-related needs!Posted on Google![]()
Amar A314 days agoTrustindex verifies that the original source of the review is Google.
Can't recommend enough, friendly, fairly priced and most importantly RELIABLE! Had an urgent issue and they came out on a Sunday for me, wish I found them before wasting a whole week with another company. Will defo be using them for any plumbing services going forward.Posted on Google![]()
Malcolm Garnett314 days agoTrustindex verifies that the original source of the review is Google.
Friendly, knowledgeable and an absolute pleasure to deal with! Now, my ‘go to’ with Amy heating issues. 😀😀😀Posted on Google![]()
Brijesh Parmar314 days agoTrustindex verifies that the original source of the review is Google.
Martin and Lauren from Happy Heat provided an absolutely fantastic service. They diagnosed and fixed the issue with our underfloor heating quickly and came fully prepared with the right parts, making sure everything was completed in one visit. The work was done efficiently and to a high standard. Martin also checked in afterwards to make sure everything was running smoothly and made it clear that he was available for any aftercare if needed. Truly professional, reliable, and great to deal with. Highly recommend Happy Heat!Posted on Google![]()
David Dargue322 days agoTrustindex verifies that the original source of the review is Google.
Super-thankful for an excellent job at our church. Thoughtful, friendly, hardworking, problem-solving, optimistic and great fun. Highly, highly recommended!Posted on Google![]()
Gill Levy323 days agoTrustindex verifies that the original source of the review is Google.
After a few bad experiences, this husband and wife team was just lovely to deal with. Great communication and reasonable. They’ve scheduled us in for the next service already!Posted on Google![]()
Sean Clifford329 days agoTrustindex verifies that the original source of the review is Google.
Excellent service, full installation of new Vaillant boiler after old one packed in. Great communication, very professional and did everything with a smile and a laugh. Would highly recommend and we will be using again for future services. Thank you so much to Martin and LaurenPosted on Google![]()
hammad tahir330 days agoTrustindex verifies that the original source of the review is Google.
Just had a new boiler fitted by the amazing team of Martin and Lauren. Extremely efficient, effective and the most friendly team you would find in the business. Extremely happy with the overall process and outcome! Keep shiningPosted on Google![]()
Sarah Bunn335 days agoTrustindex verifies that the original source of the review is Google.
Very reliable , frriendly and professional. Thank you again Dolores & keith!Posted on Google![]()
Alan MARTIN342 days agoTrustindex verifies that the original source of the review is Google.
I got several quotes for the job. Happy Heat were considerably cheaper than the others. I took a chance and it paid off. Martin was very professional and efficient. He showed me another problem I had indirectly with the job. He repaired this at no extra cost. I highly recommend this company and I will look no further if I need a plumber again. Cheers to Happy HeatPosted on Google![]()
Jade Mercedes344 days agoTrustindex verifies that the original source of the review is Google.
Fixed my boiler with in the first hour, so happy highly recommend. Thank you so muchPosted on Google![]()
Katie Kerins345 days agoTrustindex verifies that the original source of the review is Google.
Amazing service ! Really quick and efficient! Job took no time at all. Very happy customer. Thank youPosted on Google![]()
Roy Tamari346 days agoTrustindex verifies that the original source of the review is Google.
Fixed our commercial boiler. They were very professional and friendly.Posted on Google![]()
Giedre M347 days agoTrustindex verifies that the original source of the review is Google.
Happy Heat installed a new boiler for us and did an excellent job from start to finish. The workmanship was neat, professional and everything was left clean and tidy. The system was explained clearly and we received a full 10-year warranty for peace of mind. Great communication throughout the process punctual, polite and clearly take pride in their work. Highly recommend.Posted on Google![]()
Manu & Vitika351 days agoTrustindex verifies that the original source of the review is Google.
Excellent service and communication, fixed boiler issue same day. Thanks so muchPosted on Google![]()
Adam Taplin352 days agoTrustindex verifies that the original source of the review is Google.
Martin and his team are fantastic, really impressed with the efficiency and professionalism they displayed, whilst completing the work at our commercial premises. Thanks again!Posted on Google![]()
Matthew Sealy352 days agoTrustindex verifies that the original source of the review is Google.
Fantastic job replacing an old boiler and upgraded to phone app controls, great communication throughout the process, cleaned up perfectly and at a good price, highly recommend Martin and his team.Posted on Google![]()
Charles Wattley352 days agoTrustindex verifies that the original source of the review is Google.
Thank you Martin for removing our 40 year old boiler and installing a Vaillant combi, your service was excellent and professional putting the customer first. Thank you very much.Posted on Google![]()
Admin Latimer353 days agoTrustindex verifies that the original source of the review is Google.
We are a small church in East London with accommodation. Martin and his team have always been extremely helpful and knowledgeable. No job has been too large or too small. 10/10 Thank youPosted on Google![]()
Charlie Oliva354 days agoTrustindex verifies that the original source of the review is Google.
Happy heat fixed my boiler after a third party told me it was unrepairable. They literally attended to quote me for a new boiler however to my delight, they fixed my existing one saving me thousands of pounds! Can’t recommend them enough! Such peace of mind knowing there’s a great and honest company local who we can rely on when in need!Posted on Google![]()
Roy Yates355 days agoTrustindex verifies that the original source of the review is Google.
Needed a new boiler fitted, called Martin and he gave a good price and fitted it when agreed, tidy and friendly service. Wouldn't hesitate to use againPosted on Google![]()
Daniel Masanovets356 days agoTrustindex verifies that the original source of the review is Google.
Fair price, tidy job, no nonsense. If you’re thinking about getting a service, just go with Happy Heat. Proper quality service. 💪🔥Posted on Google![]()
Tony Shailer356 days agoTrustindex verifies that the original source of the review is Google.
Lauren and Martin go above and beyond. Thank you so much guys, highly recommend. Tony and DebbiePosted on Google![]()
Steven Begley356 days agoTrustindex verifies that the original source of the review is Google.
Martin was so helpful and got everything fixed in an emergency. Thanks so much!Posted on Google![]()
M Begley356 days agoTrustindex verifies that the original source of the review is Google.
Happy Heat fitted a new boiler for my dad and did a great job from start to finish. They were professional, tidy, and made sure everything was working perfectly. They took the time to explain how everything worked and were really patient with him. Couldn’t recommend them enough!Posted on Google![]()
Karen Digweed356 days agoTrustindex verifies that the original source of the review is Google.
We have used Happy Heat for years now and will continue to do so. Excellent service as always for our yearly Boiler inspection and service. Any problems Martin and the Team are always there to help which is always appreciated. Would highly recommend. Thanks again MartinPosted on Google![]()
John Wainwright357 days agoTrustindex verifies that the original source of the review is Google.
Massive thank you to happy heat. Awesome service, kind of last minute but they were happy to help for a new boiler fitting heading into winter as it wouldn't have been good with our old one packing in. Pukka job.Posted on Google![]()
James Ferguson358 days agoTrustindex verifies that the original source of the review is Google.
Thank you so much for fitting our new boiler so quickly. It’s amazing speaking to people who are honest and clear and actually do what they say unlike a lot of other companies. Highly recommendedPosted on Google![]()
Mohammad Reza358 days agoTrustindex verifies that the original source of the review is Google.
⭐️⭐️⭐️⭐️⭐️ Outstanding Commercial Gas Engineer! I couldn’t be happier with the service I received. He installed a commercial boiler for us and did an absolutely fantastic job from start to finish. His work is exceptionally professional, very tidy, and completed to the highest standard. He clearly knows his trade inside out — every detail was done with great care and precision. On top of that, he’s very reasonable with his pricing, which is rare to find these days for such high-quality work. I highly recommend him to anyone looking for a reliable, skilled, and professional commercial gas engineer. I’ll definitely be using his services again in the future!Posted on Google![]()
SuperPizzy358 days agoTrustindex verifies that the original source of the review is Google.
Excellent service from start to finish. Highly recommended.Posted on Google![]()
Tommi Parsons358 days agoTrustindex verifies that the original source of the review is Google.
Very good customer service, punctual and fair priced boiler install considering the very professional work that was carried outPosted on Google![]()
Jav365 days agoTrustindex verifies that the original source of the review is Google.
Martin and his wife are fabulous. Very accommodating, great at communications - including taking the time to explain the problem and the solution. It also feels they genuinely care and try find the best solution including being considerate towards the cost for you as a customer. My def go to person and would highly recommendPosted on Google![]()
Kerry372 days agoTrustindex verifies that the original source of the review is Google.
Professional helpful and knowledgeable would definitely use them againPosted on Google![]()
Gareth Pryce423 days agoTrustindex verifies that the original source of the review is Google.
Happy Heat serviced 2 central heating boilers at our office. As well as completing the service promptly and professionally, helpful advice was offered too. Many thanks!Posted on Google![]()
IZAK UZIYEL433 days agoTrustindex verifies that the original source of the review is Google.
They have been efficient, nice and on time. Highly recommend their servicesPosted on Google![]()
Jason Hillier433 days agoTrustindex verifies that the original source of the review is Google.
Had some trouble installing my new kitchen tap, Martin had everything sorted within 10 minutes. Would completely recommend.Posted on Google![]()
Dionne Chante467 days agoTrustindex verifies that the original source of the review is Google.
I needed last minute help to turn off the gas hob whilst I had some kitchen work done. Laura was so lovely, came really promptly explained everything really clearly, and just overall super friendly. Reasonably priced and flexible to my last minuteness. Highly recommend them!! I hope to not have any boiler or gas issues but even if I did, I can happily call Laura back!Posted on Google![]()
Evelyn Murphy578 days agoTrustindex verifies that the original source of the review is Google.
We have used Happy Heat for a few years now and have always been really impressed by excellent service, honest pricing and a friendly approach. We had an issue today which he helped out with very promptly. Keep up the good work!Posted on Google![]()
Karen Brown694 days agoTrustindex verifies that the original source of the review is Google.
Excellent service no nonsense approach to fault finding, new boiler fitted no fuss, highly recommended! Thanks MartinPosted on Google![]()
Dean O'Field695 days agoTrustindex verifies that the original source of the review is Google.
Absolutely sterling job carried out by Happy Heat. Great communication throughout, prompt, professional and timely. They came recommended by friends and I would highly recommend them myself. Thanks Happy Heat.Posted on Google![]()
S C819 days agoTrustindex verifies that the original source of the review is Google.
Had to have my whole heating system flushed as my kitchen fitters had unfortunately created an airlock, but they sorted it. Would highly recommend these guys and will use again for my boiler service.Posted on Google![]()
Sedat Koseoglu821 days agoTrustindex verifies that the original source of the review is Google.
We had our boiler replaced and Martin did a great job. When he does his work he does it properly. I am glad to have it replaced from him. Thanks SedatPosted on Google![]()
Mark Kempster1184 days agoTrustindex verifies that the original source of the review is Google.
Martin carried out a full service on our dual boiler set up including a power flush. It’s a complex system here and he worked through things methodically and completed the job - additionally he found and documented some of the slight nuances of our system. Professional service - very pleased.Posted on Google![]()
Tat A YEUNG1202 days agoTrustindex verifies that the original source of the review is Google.
Martin and his team provided an awesome service! Professional and friendly. Super helpful and explain the issue in details. Top quality. Highly recommend.Posted on Google![]()
Michael Dangoor1212 days agoTrustindex verifies that the original source of the review is Google.
Very personal service for gas repairs. Badly needed after end of British Gas Commercial. We will continue to use Happy Heat in the future.Posted on Google![]()
Has Tailor1230 days agoTrustindex verifies that the original source of the review is Google.
Fantastic service - great value for money, professional and friendly. Would highly recommend.Posted on Google![]()
Yoni Wehbe1239 days agoTrustindex verifies that the original source of the review is Google.
Incredibly helpful and thoughtful. Took the time to explain in detail and answer all my questions. Highly recommended.Posted on Google![]()
dominique demeure1249 days agoTrustindex verifies that the original source of the review is Google.
Martin and his team did a big and complex job at our house. They replaced a very old boiler and updated all controls. This included changing the flue, pipes, rewiring, changing thermostats etc. They were at all times very professional, finding solutions to complex issues, always discreet, smiling and with a positive attitude. Martin is very responsive and emails or WhatsApp messages are replied to almost instantly. I recommend the team (Martin, Mark, Tommi and Bogdan) warmly (😉)Posted on Google![]()
Lucy Martin1267 days agoTrustindex verifies that the original source of the review is Google.
From initial contact Martin was helpful, friendly and knowledgeable. We didn't feel rushed or pressured to make any decisions and the price quoted was really competitive. Mark and Tommi did a great job replacing my old boiler with hive heating, flushing out the system and installing a new radiator (I know it brought up more than a few challenges!). They never complained and just sorted everything that was needed. They even managed to keep my dog entertained, she loved the company :-)Posted on Google![]()
Nico Dontas1268 days agoTrustindex verifies that the original source of the review is Google.
Fantastic boiler installation by Martin, Mark and the team. So friendly, neat and tidy. Unrivalled Communication from quote to completion. Now we have a brand new Vaillant with 10 years warranty! Already recommended to friends and family!Posted on Google![]()
Jay Taylor1268 days agoTrustindex verifies that the original source of the review is Google.
Always professional, always reponsive and the heads up call is always helpful so I can go about my day.Posted on Google![]()
Linda Firm1269 days agoTrustindex verifies that the original source of the review is Google.
Good communications, arrived when they said they would, serviced boiler and advised on any further action. Friendly and professional. Would definitely recommend.Posted on Google![]()
Jasmine Joy1275 days agoTrustindex verifies that the original source of the review is Google.
Mark and Tom done a brilliant job, from the initial call to completion was professional the whole time. Superb communication, top quality work and excellent value for money.Posted on Google![]()
James Kent1276 days agoTrustindex verifies that the original source of the review is Google.
Second time I have had to use Martin within the space of a couple of weeks, went over and above the call of duty, managed to sort a massively complicated issue, and ensured I had heating before he left. Cannot recommend these guys highly enough.Posted on Google![]()
Jonathan Winter1291 days agoTrustindex verifies that the original source of the review is Google.
A combination between really skilled technician and an all round friendly guy.Posted on Google![]()
matt shaw1293 days agoTrustindex verifies that the original source of the review is Google.
Quick response and professional job in and job done with no problemsPosted on Google![]()
Dawn Beaton1296 days agoTrustindex verifies that the original source of the review is Google.
Very professional, pleasant to deal with, would definitely recommend themPosted on Google![]()
nita gaglani1297 days agoTrustindex verifies that the original source of the review is Google.
Martin was very helpful and explained exactly what’s wrong with the boiler and fixed the problem quickly and efficiently. I have no hesitation in recommending Happy Heat company and specifically Martin.Posted on Google![]()
Bimal Gandhi1301 days agoTrustindex verifies that the original source of the review is Google.
Martin got the job on time without any problems. Kept me informed about the progress. Price was competitive and honest on the type of boiler to use.Posted on Google![]()
Debbie Jeater1301 days agoTrustindex verifies that the original source of the review is Google.
Very professional and helpful especially in a crisis! Great communication and very reliable… gave us good advice and quick service! Thanks Martin and team you were great!!!Posted on Google![]()
Mark Woods1302 days agoTrustindex verifies that the original source of the review is Google.
Great service at a very reasonable price, polite and well mannered staffPosted on Google![]()
Nash EJ1302 days agoTrustindex verifies that the original source of the review is Google.
Very efficient workers very knowledgeable polite and friendly ! Left the work area clean , completed the new boiler installation in good time ! *****Posted on Google![]()
penshurst Gardens1304 days agoTrustindex verifies that the original source of the review is Google.
surveyPosted on Google![]()
judy haggar1306 days agoTrustindex verifies that the original source of the review is Google.
Excellent service ,polite ,on time and very helpful.Posted on Google![]()
Suzanne King1312 days agoTrustindex verifies that the original source of the review is Google.
This was a great company to deal with, Martin is friendly, professional and such a nice guy. Will have no problem recommending him to my friends and family. Thank you so much.Posted on Google![]()
Mat Pollard1314 days agoTrustindex verifies that the original source of the review is Google.
Had advice on a temporary fix for our Shower. Was excessive limescale blocking the flow. Now sorted, need to get a water-softener fitted at some point this year, will use these guys 100% RECOMMENDED 👍🏼Posted on Google![]()
Chun Kit Chan1319 days agoTrustindex verifies that the original source of the review is Google.
Quick and professional , specially Martin He very helpful and professional knowledge.Posted on Google![]()
Nick G1321 days agoTrustindex verifies that the original source of the review is Google.
Thank you to Happy Heat.. on time, kept me up to date with progress. Your service is outstanding and would happily recommend you 👍🏼 In addition, Martin explains everything very well, Trusted and would write a reference if need be. Thanks again Martin for both our commercial and residence !Posted on Google![]()
Kev Walsh1321 days agoTrustindex verifies that the original source of the review is Google.
Excellent service, friendly, excellent service. Good price, Very celtic in appearance. 5*Posted on Google![]()
Herts Mum1321 days agoTrustindex verifies that the original source of the review is Google.
Really happy with the service we received from happy heat. Martin squeezed us in and worked hard to make sure he got round to most of the jobs we needed carrying out. He was honest about his availability and gave lots of advice about other issues we were having in addition to the work he was carrying out. Really neat and tidy work and I wouldn’t hesitate to recommend Martin in future.Posted on Google![]()
Jack Fletcher1322 days agoTrustindex verifies that the original source of the review is Google.
Martin & the team were great start to finish, showed up on time & provided all info & details as promised. Quick to respond & get our boiler replaced & up & running again. Really professional definitely recommend.Posted on Google![]()
Myles Hickey1326 days agoTrustindex verifies that the original source of the review is Google.
Helpful and competent.Posted on Google![]()
Sue Wade1327 days agoTrustindex verifies that the original source of the review is Google.
We are a church in East London. Martin and his team has provided us with A+ service. No job has been too small or too big for them. Brilliant value for money.Posted on Google![]()
Simon Harris1330 days agoTrustindex verifies that the original source of the review is Google.
Martin is really friendly and polite. He turned up on time and did a great job. Installed Hive Thermostat.Posted on Google![]()
Janine Burgess1354 days agoTrustindex verifies that the original source of the review is Google.
Fantastic service from Happy Heat! My heating hasn’t worked properly for years. after using numerous other company’s who couldn’t repair it, my friend recommended Happy Heat to me and they had me up and running again same day! I can not recommend them enough. Over the moon with how quick and efficient they are 10/10Posted on Google![]()
Alice Louise1365 days agoTrustindex verifies that the original source of the review is Google.
Highly recommend Martin. He is brilliant! Great service and even better customer service. Thank you Martin.Posted on Google![]()
Amalie Barras1365 days agoTrustindex verifies that the original source of the review is Google.
They set an appointment window and then didn’t show up. They took no responsibility and when pressed about it over the phone, blamed me for not answering a phone call they did not give a heads up about, then hung up on me. No attempt was made to actually show up during the appointment window, and yet they blamed me for missing the appointment. An appointment is an appointment, and if a call ahead is a requirement that expectation should be clear. I am surprised to see all the glowingly positive reviews specifically mentioning punctuality. We must have just been unlucky and gotten them on an off day.Posted on Google![]()
Gav Hodes1380 days agoTrustindex verifies that the original source of the review is Google.
I am happy with the service provided and follow-up great work!Posted on Google![]()
Billy Garvey1482 days agoTrustindex verifies that the original source of the review is Google.
I was most pleased with the work carried out by Happy Heat, the service they provided for me from start to finish was fantastic. Really felt happy at the end and would definitely use this company again 👍Posted on Google![]()
Andy Vincent1712 days agoTrustindex verifies that the original source of the review is Google.
Absolutely fantastic work from Martin with the fitting of our new boiler. Martin was so efficient, diligent and trustworthy. We would thoroughly recommend him to anyone and in fact have already done so. Thank you for such a great job and all your help, you really did go above and beyond to help us.Posted on Google![]()
Samantha Vincent1716 days agoTrustindex verifies that the original source of the review is Google.
Absolutely brilliant service from Martin with the installation of our new boiler. We would wholeheartedly recommend him. He was informative, helpful, diligent and trustworthy throughout the whole process. We cannot thank you enough for all you have done!Posted on Google![]()
Amy Jennings1720 days agoTrustindex verifies that the original source of the review is Google.
Martin was knowledgeable and friendly. He replaced the kitchen tap, and was happy to look at and fix another issue on the spot. Great service, would definitely recommend.Posted on Google![]()
Ro1730 days agoTrustindex verifies that the original source of the review is Google.
Happy Heat Came out to repair our entire heating system. They replaced radiators, serviced boiler and carried out a power flush on our commercial system in our warehouse. Happy Heat are the most professional, friendly, reasonably priced and punctual heating and plumbing service I have ever used. I would never hesitate to recommend them to any of my friends and family.Posted on Google![]()
Pranav Mediratta1730 days agoTrustindex verifies that the original source of the review is Google.
Martin is very polite, honest and hard working. He was happy to stay late (until 11pm) and finish the job so that we had heating overnight. He was also reasonably priced. Will definitely use for all our gas services on the future.Posted on Google![]()
All Clear waste limited1730 days agoTrustindex verifies that the original source of the review is Google.
Very friendly, professional service and would definitely recommend 👌Posted on Google![]()
Tony1777 days agoTrustindex verifies that the original source of the review is Google.
I had Happy Heat out to carry out a boiler service and fit a new toilet for me. They did an excellent job and I’ll definitely be using them again.Posted on Google![]()
Jacqui Bentley1778 days agoTrustindex verifies that the original source of the review is Google.
Highly knowledgeable and professional service, very friendly and made me feel confident that they knew what they were doing. Highly recommendPosted on Google![]()
Brendan Joyce1779 days agoTrustindex verifies that the original source of the review is Google.
Punctual, competitive rates, extremely professional and will definitely use again and highly recommended to family and friends!Posted on Google![]()
tony defeo1779 days agoTrustindex verifies that the original source of the review is Google.
Excellent service 👌🏻Very professional. Highly recommendPosted on Google![]()
terry greer1779 days agoTrustindex verifies that the original source of the review is Google.
After multiple other companies attended my address and failed to complete a full repair on our boiler we phoned HAPPY HEAT which turned up the next morning, Martin and a young apprentice turned up and found multiple issues and carried out all repairs immediately, I was so impressed with martins attitude and the way he was taking his time to show the young apprentice how to fully test&repair a gas system we have given Happy Heat a contract to service and repair both our domestic and commercial propertiesVerified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Got a question about one of our awesome services?
Choosing the right commercial heating contractor is especially important for busy business premises where reliability and disruption both matter.
We’ve answered some of the most common questions from businesses in Hemel Hempstead looking for commercial heating support, with clear and practical answers.
Happy Heat supports a range of commercial premises across Hemel Hempstead, including offices, industrial units, warehouses and other business buildings. We assess the building, existing heating system and how the premises are used before recommending the most suitable approach.
Yes. Happy Heat provides commercial boiler repair support for businesses across Hemel Hempstead. We assess the fault, identify the most practical repair and work to restore reliable heating while keeping disruption to your premises and operations to a minimum.
Yes. Happy Heat provides commercial boiler servicing for businesses across Hemel Hempstead and nearby areas. Regular servicing helps check system condition, identify developing issues early and reduce the risk of unexpected boiler faults affecting your building.
Yes. Happy Heat supports commercial heating replacement and upgrade projects where businesses need improved reliability, better performance or additional capacity. We assess the existing system and recommend practical improvements based on the building, current setup and long-term requirements.
Yes. Happy Heat can provide ongoing commercial heating maintenance covering boilers and the wider heating system. Planned maintenance helps identify issues early, manage repairs and support more reliable system performance throughout the year.
We support businesses across Hemel Hempstead and nearby areas including Kings Langley, Berkhamsted, St Albans, Watford and Rickmansworth, as well as surrounding Hertfordshire areas.
Get in touch with us
Get a free quote, email us if you have a question or call us on 01923 372823.
Got an emergency? You can contact us on our emergency hotline.
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Got an emergency?
If you've lost heating or hot water, don't worry we are here to help. We operate around the clock, with a dedicated out-of-hours phone line between 8pm and 6am.
While availability can very, we'll always make every effort to attend as quickly as possible when you need us most.
Need a fix fast? WhatsApp us!
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Checking us out on your phone? Hit us up by tapping on the WhatsApp icon at the bottom right.
It’s the quickest way to chat, and you can fire over photos or videos so we can see the issue and sort you out even faster!
Areas we cover
We cover most of London, Hertfordshire and Middlesex. Including: Radlett, Abbots Langley, St Albans, Northwood, Harrow, Uxbridge, Rickmansworth, Chorleywood, Watford and Bushey. We may travel a little bit further, just give us a call!

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©2026 Happy Heat All rights reserved. Happy Heat Limited is an Introducer Appointed Representative (Financial Services Register No. 1053623) of Phoenix Financial Consultants Limited (Phoenix). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (FRN: 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks.
Registered Address: 269 Park Avenue, Bushey, Hertfordshire, WD23 2DR, United Kingdom. If you have any concerns about our use of your personal information, you can make a complaint to us by writing us at 269 Park Avenue, Bushey Hertfordshire WD23 2DR, calling us on 0800 246 5457 or by sending an email to hello@happyheat.co.uk. You can also complain to the ICO if you are unhappy with how we have used your data. The ICO’s address: Information Commissioner’s Office, Wycliffe House, Water Lane, Wilmslow, Cheshire, SK9 5AF. Helpline number: 0303 123 1113. ICO website: https://www.ico.org.uk.
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