How we can help you
We handle everything from basic domestic boilers and underfloor heating to huge commercial warm air units and even complex catering appliances. For more information, select a service below or for more complex projects, give us a call!
Home boiler repairs
No heat or hot water? Sounds like you might need a boiler repair, we've got your covered.
Home boiler installations
Need a new boiler in your home? Get a 10-year warranty with all new Vaillant boilers.
Home boiler servicing
Maintain your warranty and keep your boiler running efficiently with an annual service.
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!
10-year warranty with all new Vaillant boiler installations
Why choose HappyHeat?
Here's why thousands of customers (and counting) have chosen us:
Reputation built on trust
Expertise and fully insured
We have over 25 years of combined experience in the industry. We are also fully insured so you know that all works are fully protected and assured.
It's a family affair
We're proudly a husband and wife team. This unique family dynamic means you always get a personal, trustworthy service larger firms simply can’t match.
Don't just take our word for it!
We pride ourselves in our reviews and 100% customer satisfaction
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.
We love to keep ourselves busy
Check out some of our latest projects on the gram!
Get in touch with us
Get a free quote, email us if you have a question or call us on 0800 246 5457
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!
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 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.
Need a fix fast? WhatsApp us!
©2026 Happy Heat All rights reserved.
0800 246 5457
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.