Same-Day Boiler Repairs & Installations. Fixed Prices, No Surprises.
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."
Trusted by 10,000+ Londoners & Institutions
Gold Winner — Apprentice Employer of the Year
Recognised for innovation, sustainability, and apprenticeship development. Finalist for Employer of the Year.
Engineering Comfort.
From smart home integration to industrial plant rooms, we deploy precision engineering across the capital.
Smart Heating
App-controlled thermostats and zone management. Reduce energy waste by up to 30%.
New Boiler — From £1,950
Worcester Bosch & Vaillant installs with 10-year warranty. Next-day installation available.
Care Plans
Priority breakdown cover, annual servicing, and zero call-out fees.
Enterprise Solutions
Complete mechanical services for offices, hotels, and retail. Preventative maintenance contracts and plant room refurbishment.
View Commercial Case StudiesEmergency Plumber — 24/7
We're at your door within 60 minutes. Burst pipes, gas leaks, boiler breakdowns — no call-out fee.
Boiler Installation Pricing
Fixed-price boiler installations with leading brands. All installations include full certification, warranty registration, and a 12-month workmanship guarantee.
Worcester Bosch 24kW
Combi Boiler Package
From, subject to survey
Worcester Bosch Premium
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.
Track Our Engineers.
Our fleet is always on the move across London. Watch our engineers in real-time as they respond to calls throughout the city.
The Experts.
Our engineers aren't just tradespeople; they are technical specialists vetted for expertise and professionalism.
Joe Jennings
Founder
Miles
Operations Manager
Maddie
Head of Client Services
Ilie Jucatoru
Commercial & Domestic Engineer
Marinel
Heating, Gas & Plumbing Engineer
Vaile Ciocan
Heating, Gas & Plumbing Engineer
Spencer
Plumbing & Heating
Daniel Nitulezcu
Master Builder / Multi Trades
Jackie
Admin Lead
Kim
Accounts
Ryan Crowder
2nd Year Plumbing Apprentice
Albert
Apprentice
Verified Performance.
John Danvers
"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."
Sarah Mitchell
"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."
David Peters
"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."
Emma Thompson
"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."
John Danvers
"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."
Sarah Mitchell
"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."
David Peters
"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."
Emma Thompson
"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."
John Danvers
"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."
Sarah Mitchell
"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."
David Peters
"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."
Emma Thompson
"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."
Expert Guides
Practical advice and maintenance tips from our Gas Safe registered engineers to help you get the most from your heating system.
10 Warning Signs Your Boiler Needs Immediate Attention
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.
How to Check Your Boiler Pressure: A Step-by-Step Guide
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.
5 Ways to Maximize Your Boiler's Efficiency This Winter
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.
Understanding Boiler Error Codes: What They Mean & What to Do
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.
Why Annual Boiler Servicing Could Save You Thousands
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.
Preparing Your Heating System for Cold Weather: Essential Checklist
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.