London's reactive heating, HIU, cooling, plumbing and ventilation engineers.
Same-day attendance where available, with 24/7 emergency support. Our own engineers, clear rates and practical advice for your property.
Independently accredited and registered
Joe Jennings
Director, 20 Years Experience
"We're accountable for every job. That's the Heat-Plex difference."
Trusted by 10,000+ Londoners & Institutions
Know the price before we ring the bell.
Every Heat-Plex job is quoted upfront at clear London rates. No surprises on the invoice, no padded hours, no “while we’re here” extras.
- No callout fee
- No fuel surcharge. Parking charges confirmed before work
- Fixed quote agreed before we start
The right help for your property
Reactive repairs and planned servicing for London homes, landlords and managing agents.
Emergency and reactive repairs
Help with leaks, heating faults and urgent repairs. Call to check same-day availability.
Request a calloutHIU servicing and repairs
Heating and hot-water support for homes and blocks with heat interface units.
Explore HIU servicesHeating and gas
Boiler repairs, heating faults, servicing and gas safety checks by our own engineers.
Explore heating servicesPlumbing and drains
Leaking pipes, blocked drains, taps and everyday plumbing repairs across London.
Get plumbing helpCooling and ventilation
Fan-coil and cooling servicing. Specialist air conditioning work arranged with contracted engineers.
Explore cooling servicesPlanned maintenance
Talk to us about servicing and maintenance for your home, property portfolio or block.
Discuss maintenanceBoiler installation
Worcester Bosch and Vaillant packages from £1,995 + VAT, supplied and fitted, subject to survey.
Compare boiler packages
Gold Winner: Apprentice Employer of the Year
Recognised for innovation, sustainability, and apprenticeship development. Finalist for Employer of the Year.
How a callout works
- 01
Tell us what is wrong
Call or send an enquiry with your postcode, the problem and any useful photos.
- 02
Agree the visit and price
We confirm availability and explain the rates, minimum charge and any parking costs.
- 03
Get the work assessed
Our engineer checks the fault and explains the work and costs before going ahead.
The Experts.
We check our engineers' skills and experience so you can trust the team working in your home.
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
Read our customer reviews
See customer feedback on Google and Trustpilot.
Expert Guides
Practical advice and maintenance tips from our Gas Safe registered engineers to help you get the most from your heating system.
HIU Service London: What Every Resident and Block Manager Needs to Know
A guide to HIU servicing in London. Learn what a service includes, why yearly checks matter and how to choose a qualified engineer. We also explain heat network rules.
HIU Maintenance: The Preventative Guide That Saves London Residents Thousands
Learn what goes wrong when Heat Interface Units aren't maintained, the warning signs to watch for, and how planned HIU maintenance protects your heating system and wallet.
How to Choose a Heating Engineer in London: Credentials, Red Flags and What to Expect
Find a qualified heating engineer in London. Learn how to check Gas Safe registration, compare prices and spot common scams.
Boiler Installation in Chelsea: Navigating Period Properties, Listed Buildings and Conservation Areas
A guide to boiler installation in Chelsea (SW3/SW10). We explain the needs of older homes and mansion blocks, planning rules and working with freeholders.
Boiler Installation in Battersea: From Victorian Terraces to New-Build Towers
A guide to boiler installation in Battersea (SW11/SW8). Compare heating options for Victorian terraces and new flats, with advice from our local team.
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.