Home boiler installations

Upgrade to a modern, energy-efficient boiler today. We handle the full installation, saving you money on bills and keeping your home cosy for the next decade and beyond!



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I want a new boiler!
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Need a brand new and efficient boiler?


Upgrade to a modern, energy-efficient boiler today. We handle the full installation, saving you money on bills and keeping your home cosy for the next decade and beyond!


0800 246 5457

Get a quote
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Our coverage

We cover most of London, Hertfordshire and Middlesex. Including: Radlett, Abbots Langley, St Albans, Northwood, Rickmansworth and Bushey.

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It starts with a chat

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!

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We'll book you in

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!

A new boiler means bigger savings!

If your current boiler is looking a bit worse for wear, noisy, or just plain ancient, it’s probably throwing your money away! Upgrading to a new, A-rated boiler is one of the smartest investments you can make for your home.

Modern systems are incredibly efficient, meaning they use far less gas to heat your water and home. This instantly translates into noticeably smaller energy bills. Beyond the financial savings, a new installation brings unbeatable reliability and peace of mind.



Reliability you can count on

Our certified engineers install top-quality boilers such as Vaillant boilers, which come with lengthy, robust guarantees, often up to 10 years! Say goodbye to that constant dread of a winter breakdown and those emergency repair bills.

With a new boiler, you get quiet, powerful performance, reliable hot water on demand, and the assurance that your heating is safe, compliant, and ready for whatever the British weather throws at it. It's truly hassle-free warmth for your whole family.

But that's not all!

As well as standard boiler repairs, installs and servicing. We can help with the following:

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Warm air heaters

We install, repair and service domestic warm air heaters.

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Underfloor heating

We repair and service domestic underfloor heating systems.

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Power flushing

We flush out domestic heating systems to keep them running efficiently.

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Smart home devices

Ready for a smart home? We install WiFi heating controls.

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Cooking with gas!

We install, repair and service gas hobs in your kitchen or cooking premises.

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Plumbing work

We install and repair plumbing. From pipe work to shower pumps and more.

You really are in safe hands with us!

Picking the right engineers can be a little overwhelming. It can take a lot of trust to let anyone into your private space. This is why we (and over 100 happy customers on Google) think we are the mutts nuts!

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24/7 emergency call outs


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Fully registered Gas Safe engineers


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10 year warranty on new Vaillant boilers


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The latest smart technology


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100% positive feedback on Google

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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!

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Don't just take our word for it!

We pride ourselves in our reviews and 100% customer satisfaction

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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?

Still have a question?

Get in touch with us

Get a free quote, email us if you have a question or call us on 0800 246 5457

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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.

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Got an emergency?

If the doo-doo has his the fan and you have no heating or hot water give us a call. We can't guarantee it but we'll try and visit you out of hours where we can.


Call: 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!

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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
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We love to keep ourselves busy

Check out some of our latest projects on the gram! 

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Registered: 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.