We service any make and model of natural gas boiler
Domestic Heating
We handle all your home boiler repairs, servicing, and installations with professional care and transparent pricing. Let's get your heating sorted!
Find out more
Contact us
Domestic Heating
We handle all your home boiler repairs, servicing, and installations with professional care and transparent pricing. Let's get your heating sorted!
01923 372 823
Contact us
Our domestic heating services
Whether your boiler has decided to throw a winter tantrum and needs a speedy repair, or it's time for its annual 'spa day' with a professional service to keep it purring perfectly, we've got you covered.
Beyond fixes and check-ups, we also handle full new installations, making the upgrade to a highly efficient system totally painless, so your home stays safe, warm, and energy-savvy all year long!
Home boiler installations
Time for an upgrade? Get a highly efficient, brand-new boiler installed by certified experts!
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Home boiler repairs
Need a boiler repaired in your home? Don't worry, we've got you covered!
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Home boiler servicing
Need your boiler serviced? Hold on to that manufacturer's warranty with an annual service.
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But that's not all!
As well as standard boiler repairs, installs and servicing. We can help with the following:
Warm air heaters
We install, repair and service domestic warm air heaters.
Underfloor heating
We repair and service domestic underfloor heating systems.
Power flushing
We flush out domestic heating systems to keep them running efficiently.
Smart home devices
Ready for a smart home? We install WiFi heating controls.
Cooking with gas!
We install, repair and service gas hobs in your kitchen or cooking premises.
Plumbing work
We install and repair plumbing. From pipe work to shower pumps and more.
Good, honest work, always!
Has your boiler decided to throw a tantrum and leave you in the cold? Don't panic, that's what we're here for! When your heat goes rogue, we spring into action, treating every breakdown as a top priority. We start with a quick and personable diagnosis, often using your WhatsApp photos or a phone call to understand the drama immediately.
We arrive equipped to trace the fault and provide a fast, reliable repair, aiming to get the system fixed efficiently and accurately the first time. Our goal is simple: to stop the chilly chaos and restore your home's warmth and hot water with minimal fuss and a friendly smile!
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 Bruce7 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 Harper22 days agoWe 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
James24 days agoMany 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 Zymberi41 days agoVery 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 Saunders41 days agoIncredible 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
George41 days agoGreat installation of a full heating system lovely new boiler and radiators could not recommend them enough!Posted on Google
alfie drury41 days agoGreat customer service very happy with my new valiant boiler would definitely recommend.Posted on Google
Jolene Sher80 days agoWe 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 Burd84 days agoVery good service - friendly, good communicatuon, well pricedPosted on Google
Andriy Buryak85 days agoOur 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 West105 days agoWe 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 C131 days agoI’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 cursons141 days agoJust 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 McCarthy146 days agoJust had a new boiler installed by Happy Heat, excellent job, clean and tidy, fully recommend them, 100% thanka so muchPosted on Google
James McCarthy146 days agoI'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 Marley162 days agoHighly recommended, newly installed boiler very quick & professional. Friendly & very clean & tidy. Thank you!!!!!!Posted on Google
Sunil Kansagra163 days agoFabulous!Posted on Google
Asad Tamimi169 days agoMartin 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 Ltd171 days agoWe 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 Rekaj173 days agoJust wanted to say that I love my new boiler, it looks so good I am really happy with this, thanks!Posted on Google
Chloe Chappell175 days agoVery pleased with my newly installed boiler, gentleman was very professional & friendly. Highly recommend🌟Posted on Google
Gail175 days agoHappy 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 Georgiou175 days agoMartin 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 Dontas175 days ago⭐️⭐️⭐️⭐️⭐️ 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 Callan175 days agoI am more than happy with my new boiler very friendly and professionalPosted on Google
Iliya Anvar175 days agoPerfect service. Perfect outcome.Posted on Google
Judith Garnett184 days ago100% happy. Brilliant job and totally trustworthy.. Reliable and a pleasure to have in my home - i didn't feel uncomfortable.Posted on Google
Minesh Patel197 days agoHappy 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 Shodimu198 days agoAn expert, helpful, straight forward, and professional - I would recommend Happy Heat and Martin for the work done. Very much appreciated.Posted on Google
Manager200 days agoMy 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 Malinowski205 days agoGot a new boiler installed in 3 business days from informing me that I need one. Super professional and kind.Posted on Google
Nicola Tillman213 days agoI 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 Wicks219 days agoI 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 Spensley220 days agoExcellent service - efficient and friendly. Would recommend and use againPosted on Google
Koen232 days agoExcellent service 🌟Posted on Google
Jane Jacobson235 days agoMy 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 dsouza235 days agoGreat 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 droznika240 days agoWe 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 leavens243 days agoSuch a lovely company, Martin was really good and gave best advicePosted on Google
Luis254 days agoVery good service, identified the issue quick. And a Good PricePosted on Google
Byron257 days agoHighly 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 Lyons259 days agoVery 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 Lee261 days agoIt 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 Harrington263 days agoI would recommend Happy Heat. Very Professional. Great service.Posted on Google
Paul O'Dell268 days agoExtremely 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 portway269 days agoMartin and his team were efficient and friendly as very good value for moneyPosted on Google
Raj270 days agoAbsolutely amazing . Martin was very quick, reliable and very honest with the work carried out …. Very trustworthyPosted on Google
Jan270 days agoFantastic 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 Glazer271 days agoMartin 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
Kris272 days agoQuick 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 daya274 days agoHad 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 Hunter292 days agoMartin 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 Nicholas293 days agoGood communication, clear pricing and really neat and tidy, I have no hesitation in recommending this family company.Posted on Google
Anthony Underwood294 days agoHad my bolier serviced by Happy Heat again this year - efficient, friendly and trustworthy. Need I say more!Posted on Google
Shelley Marsh294 days agoWoke 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
Sammie298 days agoMartin 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 Mills303 days agoHappy 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 P313 days agoMartin 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 Law313 days agoMartin 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 A313 days agoCan'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 Garnett313 days agoFriendly, knowledgeable and an absolute pleasure to deal with! Now, my ‘go to’ with Amy heating issues. 😀😀😀Posted on Google
Brijesh Parmar313 days agoMartin 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 Dargue321 days agoSuper-thankful for an excellent job at our church. Thoughtful, friendly, hardworking, problem-solving, optimistic and great fun. Highly, highly recommended!Posted on Google
Gill Levy322 days agoAfter 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 Clifford328 days agoExcellent 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 tahir329 days agoJust 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 Bunn334 days agoVery reliable , frriendly and professional. Thank you again Dolores & keith!Posted on Google
Alan MARTIN341 days agoI 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 Mercedes343 days agoFixed my boiler with in the first hour, so happy highly recommend. Thank you so muchPosted on Google
Katie Kerins344 days agoAmazing service ! Really quick and efficient! Job took no time at all. Very happy customer. Thank youPosted on Google
Roy Tamari345 days agoFixed our commercial boiler. They were very professional and friendly.Posted on Google
Giedre M346 days agoHappy 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 & Vitika350 days agoExcellent service and communication, fixed boiler issue same day. Thanks so muchPosted on Google
Adam Taplin351 days agoMartin 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 Sealy351 days agoFantastic 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 Wattley351 days agoThank 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 Latimer352 days agoWe 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 Oliva353 days agoHappy 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 Yates354 days agoNeeded 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 Masanovets355 days agoFair 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 Shailer355 days agoLauren and Martin go above and beyond. Thank you so much guys, highly recommend. Tony and DebbiePosted on Google
Steven Begley355 days agoMartin was so helpful and got everything fixed in an emergency. Thanks so much!Posted on Google
M Begley355 days agoHappy 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 Digweed355 days agoWe 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 Wainwright356 days agoMassive 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 Ferguson357 days agoThank 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 Reza357 days ago⭐️⭐️⭐️⭐️⭐️ 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
SuperPizzy357 days agoExcellent service from start to finish. Highly recommended.Posted on Google
Tommi Parsons357 days agoVery good customer service, punctual and fair priced boiler install considering the very professional work that was carried outPosted on Google
Jav364 days agoMartin 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
Kerry371 days agoProfessional helpful and knowledgeable would definitely use them againPosted on Google
Gareth Pryce422 days agoHappy 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 UZIYEL432 days agoThey have been efficient, nice and on time. Highly recommend their servicesPosted on Google
Jason Hillier432 days agoHad some trouble installing my new kitchen tap, Martin had everything sorted within 10 minutes. Would completely recommend.Posted on Google
Dionne Chante466 days agoI 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 Murphy577 days agoWe 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 Brown693 days agoExcellent service no nonsense approach to fault finding, new boiler fitted no fuss, highly recommended! Thanks MartinPosted on Google
Dean O'Field694 days agoAbsolutely 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 C818 days agoHad 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 Koseoglu820 days agoWe 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 Kempster1183 days agoMartin 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 YEUNG1201 days agoMartin 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 Dangoor1211 days agoVery 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 Tailor1229 days agoFantastic service - great value for money, professional and friendly. Would highly recommend.Posted on Google
Yoni Wehbe1238 days agoIncredibly helpful and thoughtful. Took the time to explain in detail and answer all my questions. Highly recommended.Posted on Google
dominique demeure1248 days agoMartin 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 Martin1266 days agoFrom 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 Dontas1267 days agoFantastic 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 Taylor1267 days agoAlways professional, always reponsive and the heads up call is always helpful so I can go about my day.Posted on Google
Linda Firm1268 days agoGood 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 Joy1274 days agoMark 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 Kent1275 days agoSecond 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 Winter1290 days agoA combination between really skilled technician and an all round friendly guy.Posted on Google
matt shaw1292 days agoQuick response and professional job in and job done with no problemsPosted on Google
Dawn Beaton1296 days agoVery professional, pleasant to deal with, would definitely recommend themPosted on Google
nita gaglani1296 days agoMartin 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 Gandhi1300 days agoMartin 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 Jeater1300 days agoVery 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 Woods1301 days agoGreat service at a very reasonable price, polite and well mannered staffPosted on Google
Nash EJ1301 days agoVery efficient workers very knowledgeable polite and friendly ! Left the work area clean , completed the new boiler installation in good time ! *****Posted on Google
penshurst Gardens1303 days agosurveyPosted on Google
judy haggar1305 days agoExcellent service ,polite ,on time and very helpful.Posted on Google
Suzanne King1311 days agoThis 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 Pollard1313 days agoHad 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 Chan1318 days agoQuick and professional , specially Martin He very helpful and professional knowledge.Posted on Google
Nick G1320 days agoThank 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 Walsh1320 days agoExcellent service, friendly, excellent service. Good price, Very celtic in appearance. 5*Posted on Google
Herts Mum1320 days agoReally 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 Fletcher1321 days agoMartin & 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 Hickey1325 days agoHelpful and competent.Posted on Google
Sue Wade1326 days agoWe 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 Harris1329 days agoMartin is really friendly and polite. He turned up on time and did a great job. Installed Hive Thermostat.Posted on Google
Janine Burgess1353 days agoFantastic 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 Louise1364 days agoHighly recommend Martin. He is brilliant! Great service and even better customer service. Thank you Martin.Posted on Google
Amalie Barras1364 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 Hodes1379 days agoI am happy with the service provided and follow-up great work!Posted on Google
Billy Garvey1481 days agoI 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 Vincent1711 days agoAbsolutely 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 Vincent1715 days agoAbsolutely 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 Jennings1719 days agoMartin 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
Ro1729 days agoHappy 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 Mediratta1729 days agoMartin 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 limited1729 days agoVery friendly, professional service and would definitely recommend 👌Posted on Google
Tony1776 days agoI 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 Bentley1777 days agoHighly knowledgeable and professional service, very friendly and made me feel confident that they knew what they were doing. Highly recommendPosted on Google
Brendan Joyce1778 days agoPunctual, competitive rates, extremely professional and will definitely use again and highly recommended to family and friends!Posted on Google
tony defeo1778 days agoExcellent service 👌🏻Very professional. Highly recommendPosted on Google
terry greer1778 days agoAfter 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
10-year warranty with all new Vaillant boiler installations
We’re proud to tell you that Vaillant has personally recognised our consistently brilliant work, allowing us to offer you a fantastic 10-year manufacturer-backed warranty on all Vaillant boiler installations!
Interested in a new boiler?
Got a question about one of our awesome services?
We know choosing a heating expert can be a faff, so we've gathered the most common questions from our Hertfordshire neighbours right here. We believe in honesty and no-nonsense answers.
Still have a questions?
We understand a breakdown is a total nightmare! We always treat boiler emergencies as a top priority. When you call, we’ll first try a quick remote diagnosis, and if we can't fix it over the phone, we aim to get an engineer to you at the earliest possible convenience to restore your heat as quickly as possible.
Don't panic! We know breakdowns never stick to office hours. Give us a call, and we'll do our absolute best to get you warm again quickly. We won't leave you shivering!
It really depends on the complexity! A straight 'like-for-like' swap (replacing your old combi with a new combi in the same location) is usually completed in just one day. If we're moving the boiler's location or changing the system type, it might take us two or three days. We’ll give you a precise schedule when we provide your quote.
We promise to be as tidy and respectful as possible! We use dust sheets everywhere, wear shoe covers, and clean up thoroughly before we leave. You might have your gas and water turned off for several hours, but we always keep you informed and aim to minimize any inconvenience.
It’s all about assurance and value for you! Because we are specially trained and certified by the manufacturers, we are experts in fitting their products. This expertise allows us to offer you those valuable extended manufacturer warranties—often up to 10 years—that standard installers can't provide.
Yes, absolutely. For safety, it’s best to turn off both the electric supply and the gas supply to the boiler immediately. Then, give us a call straight away! A leak can be a sign of internal pressure or component failure, and we need to investigate it quickly to prevent any further damage.
Still have a question?
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.
Email us a question
Want to reach out? Fantastic! Email us and we will get respond as soon as we can. The more information you provide the better and quicker we can get back to you!
hello@happyheat.co.uk
Get your free quote
By completing our contact form you are agreeing to allow us to contact you via the details that you share. We will not share your details with any third parties. For more information about how we use your data see our Privacy policy.
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.
0800 246 5457
Need a fix fast? WhatsApp us!
It looks like you are on a laptop or desktop but if you visit us on your mobile and have WhatsApp, hit us up! 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!
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!
Contact us
Domestic heating services
Domestic cooling services
Commercial cooling services
Company
©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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