Get in touch with us
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!
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.
Need a fix fast? WhatsApp us!
We’re Vaillant Advance Accredited Installers. That means we've had specialist training directly from the people who make the boilers, so we’re genuine experts at installation.
This means we can offer you an awesome extended warranty when you choose a new Vaillant boiler.
Our values and customer promise
Our values simply echo how we treat our own, guaranteeing clear, no-nonsense pricing, fast support, and proper expertise that keeps your home running safely and efficiently, no matter what the issue is.
Affordable rates for everyone
Responding to customers promptly
Always making our appointments
Calling ahead with a time slot
Customer convenient visits
We pride ourselves on our 100% customer satisfaction, but if something isn't quite right, don't bottle it up! We take every bit of feedback seriously and commit to finding a solution. All the information you need is on our complaints page.




We're Safe Contractor Approved, you can relax knowing all our work is certified and fully compliant with the latest health and safety rules.
We are also fully insured and Gas Safe Registered. You can be 100% assured that each job is handled legally and safely by certified experts.
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!
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!

We love to keep ourselves busy
Check out some of our latest projects on the gram!
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.
Our website was designed locally in Hertfordshire by our friend Tyinthewood.com | The design guy from Chorleywood

