Gas Safe engineers at your door within 60 minutes. In-house team, transparent pricing, and 24/7 emergency support across London.

Joe Jennings
Director, 20 Years Experience
"We're accountable for every job. That's the Heat-Plex difference."
Gas Safe Reg. #578913
Fully certified engineers
Fixed Prices
No call-out fees
Same-Day Response
At your door within 60 mins
10-Year Warranty
Worcester Bosch & Vaillant
Trusted by 10,000+ Londoners & Institutions
From smart home integration to industrial plant rooms, we deploy precision engineering across the capital.
App-controlled thermostats and zone management. Reduce energy waste by up to 30%.
Worcester Bosch & Vaillant installs with 10-year warranty. Next-day installation available.
Priority breakdown cover, annual servicing, and zero call-out fees.

Complete mechanical services for offices, hotels, and retail. Preventative maintenance contracts and plant room refurbishment.
View Commercial Case StudiesWe're at your door within 60 minutes. Burst pipes, gas leaks, boiler breakdowns — no call-out fee.
Fixed-price boiler installations with leading brands. All installations include full certification, warranty registration, and a 12-month workmanship guarantee.
Combi Boiler Package
From, subject to survey
High-Efficiency Range
From, subject to survey
All prices subject to site survey and suitability. Installation includes removal of old boiler, system flush, controls, and full commissioning. Additional costs may apply for complex installations or additional materials.
Join London's most reliable heating network. Priority response, annual servicing, and zero excess fees.
Keep Your Boiler in Check
Yearly maintenance and safety checks to optimise your boiler’s efficiency.
Boiler and Heating Protection
Boiler and heating control care with annual service, priority repairs, and comprehensive maintenance.
Total Heating and Boiler Care
Comprehensive cover for your entire heating system, with annual service, repairs, and priority attention.
Complete Heating and Drainage
Comprehensive cover for your boiler, heating system, radiators, pipework and both internal and external drains.
Our fleet is always on the move across London. Watch our engineers in real-time as they respond to calls throughout the city.
Our engineers aren't just tradespeople; they are technical specialists vetted for expertise and professionalism.

Founder

Operations Manager

Head of Client Services

Commercial & Domestic Engineer

Heating, Gas & Plumbing Engineer

Heating, Gas & Plumbing Engineer

Plumbing & Heating

Master Builder / Multi Trades

Admin Lead

Accounts

2nd Year Plumbing Apprentice

Apprentice
"HeatPlex installed a new boiler for us. The engineer was very professional and polite. The work was done to a high standard and the price was very competitive. I would definitely recommend HeatPlex to anyone looking for a new boiler."
"Amazing service! Boiler broke down in the middle of winter, HeatPlex engineer arrived within 2 hours and fixed it on the spot. Fair price too. The tracking link was really helpful so I didn't have to wait in all day."
"We use HeatPlex for our rental portfolio in Clapham. The office team is super responsive and the digital certificates make my life so much easier. Best commercial plumbers in London hands down."
"Had a leak under the sink that was ruining the floor. They came out on a Sunday evening. Fast, clean, and transparent pricing. No hidden fees. Very happy with the service."
"HeatPlex installed a new boiler for us. The engineer was very professional and polite. The work was done to a high standard and the price was very competitive. I would definitely recommend HeatPlex to anyone looking for a new boiler."
"Amazing service! Boiler broke down in the middle of winter, HeatPlex engineer arrived within 2 hours and fixed it on the spot. Fair price too. The tracking link was really helpful so I didn't have to wait in all day."
"We use HeatPlex for our rental portfolio in Clapham. The office team is super responsive and the digital certificates make my life so much easier. Best commercial plumbers in London hands down."
"Had a leak under the sink that was ruining the floor. They came out on a Sunday evening. Fast, clean, and transparent pricing. No hidden fees. Very happy with the service."
"HeatPlex installed a new boiler for us. The engineer was very professional and polite. The work was done to a high standard and the price was very competitive. I would definitely recommend HeatPlex to anyone looking for a new boiler."
"Amazing service! Boiler broke down in the middle of winter, HeatPlex engineer arrived within 2 hours and fixed it on the spot. Fair price too. The tracking link was really helpful so I didn't have to wait in all day."
"We use HeatPlex for our rental portfolio in Clapham. The office team is super responsive and the digital certificates make my life so much easier. Best commercial plumbers in London hands down."
"Had a leak under the sink that was ruining the floor. They came out on a Sunday evening. Fast, clean, and transparent pricing. No hidden fees. Very happy with the service."
Practical advice and maintenance tips from our Gas Safe registered engineers to help you get the most from your heating system.

Learn to identify the early warning signs of boiler problems before they become expensive emergencies. From strange noises to pressure drops, our expert engineers explain what to look for and when to call for help.

Low boiler pressure is one of the most common heating issues. Follow our simple guide to check and top up your boiler pressure safely, and know when it's time to call a Gas Safe engineer.

Simple maintenance tips that can reduce your heating bills by up to 30%. Learn how bleeding radiators, adjusting your thermostat, and regular servicing can save you money while keeping your home warm.

Decoding the flashing lights and error codes on your boiler display. Our comprehensive guide covers common fault codes from Worcester Bosch, Vaillant, Ideal, and Baxi boilers, plus when you need professional help.

Regular servicing isn't just about compliance—it's about catching small issues before they become major breakdowns. Discover what happens during a professional service and why it's essential for your boiler's longevity.

Don't wait for the first freeze to discover your heating isn't working. Our winter readiness checklist covers everything from bleeding radiators to insulating pipes, ensuring your system is ready for the coldest months.
Join 10,000+ Londoners who trust Heat-Plex for precision heating and plumbing. Get a fixed price quote in under 60 seconds.