Gas & Heating Engineers · Harrow, London
Boiler Repairs, Servicing & Gas Engineers in Harrow
Your trusted Gas Engineer in Harrow for fast, reliable boiler repairs, servicing and installations — available when you need us most.
Rated by 30+ local customers
Gas Safe Registered
Fully Insured
15+ Years Experience
Trusted Across Harrow & Surrounding Areas
About Thermal Glow
Your Trusted Gas Engineer in Harrow
As a trusted Gas Engineer in Harrow, Thermal Glow Ltd is committed to providing honest, reliable and professional heating services you can trust. Whether you need a boiler repair, annual service, new boiler installation or a Landlord Gas Safety Certificate (CP12), we deliver high-quality workmanship with a friendly, customer-focused approach.
As a Gas Safe Registered company with over 15 years of experience, we work on all major boiler brands and take pride in diagnosing problems accurately, offering transparent advice and completing every job to the highest standard.
We understand how disruptive it can be when your heating or hot water stops working, which is why we aim to provide a prompt, efficient and dependable service. From your first enquiry through to completion, we're committed to making the process as straightforward and stress-free as possible.
If you're looking for a trusted local Gas Safe Registered heating engineer in Harrow and the surrounding areas, we'd be delighted to help.
What We Do
Our Services
Complete gas and heating care, from routine servicing to emergency repairs.
01
Boiler Repairs
Fast, expert diagnosis and repair to get your heating and hot water back on quickly.
02
Emergency Boiler Breakdowns
Rapid response when your boiler fails — because heating emergencies can’t wait.
03
Boiler Servicing
Annual servicing to keep your boiler safe, efficient and reliable all year round.
04
Boiler Installations & Replacements
Professional installation of energy-efficient boilers, with honest advice on the right system for your home.
05
Central Heating Repairs
Diagnosis and repair of heating faults to restore warmth throughout your property.
06
Landlord Gas Safety Certificates (CP12)
Gas safety inspections and CP12 certificates to keep landlords fully compliant.
07
Power Flushing
Clear sludge, rust and debris from your system to improve performance and extend its life.
08
Smart Thermostat Installation
Install and set up smart heating controls including Hive, Nest and other leading systems.
Why Thermal Glow
Why Homeowners & Landlords Choose Our Harrow Gas Engineer
Gas Safe Registered
fully qualified and certified for your peace of mind.
Fast Response Times
because heating problems don't wait.
Honest, Transparent Pricing
no hidden costs, no upselling.
Local Knowledge
proudly serving Harrow and the surrounding areas.
Trusted by Homeowners & Landlords Alike
reputation built on reliability.
Boiler Brands
Boiler Brands We Work On
Reviews
What Our Customers Say
Our heating failed on one of the coldest days of the year. Ali found the fault quickly and restored the heating the same afternoon. Excellent service.
Gary Collins
Excellent service from booking through to completion. Professional, tidy and very knowledgeable. I would definitely use Thermal Glow again.
Priya Shah
We use Thermal Glow for all our rental properties. Reliable service, excellent communication and prompt certification.
Natalie Cooper
Booked a boiler service and they were on time, explained everything clearly and left the place spotless. Really refreshing.
David Osei
Called about a broken thermostat and they talked me through it over the phone first, then came out same day when it needed a part. Honest and fair.
Michelle Grant
Installed our new boiler in a day with minimal disruption. Fair price, no pushy upselling. Highly recommend.
Tom Whitfield
Came out same day for an emergency no-heat call in winter. Diagnosed and fixed within the hour. Cannot fault them.
Robert Nkemelu
Sorted our CP12 certificate for three rental flats quickly and sent paperwork straight over. Great for landlords.
Sarah Jenkins
Very knowledgeable and took the time to explain what was wrong with our old boiler instead of just pushing a replacement.
Helen Marsh
Power flush made a real difference to how quickly our radiators heat up. Tidy work and fair price.
Faisal Rahman
FAQ
Frequently Asked Questions
Yes. All gas work is carried out by a fully Gas Safe Registered engineer, ensuring it is completed safely and in accordance with current regulations.
We provide boiler repairs, boiler servicing, boiler installations, landlord gas safety certificates (CP12), central heating repairs and general gas services.
We cover Harrow, Wembley, Stanmore, Edgware, Pinner and the surrounding areas.
We repair, service and install most major manufacturers, including Worcester Bosch, Vaillant, Ideal, Baxi, Glow-worm, Viessmann, Alpha, Potterton, Main and Vokera.
We recommend servicing your boiler annually to keep it running safely and efficiently and to help maintain the manufacturer’s warranty.
Yes. We carry out CP12 Gas Safety inspections for landlords, homeowners and letting agents.
Simply give us a call or send us a WhatsApp message and we’ll arrange a convenient appointment.
Proudly Serving Harrow & Surrounding Areas
We provide gas and heating services across Harrow, Pinner, Stanmore, Edgware, Wembley, Kenton, and the wider surrounding areas.
Harrow
Pinner
Stanmore
Edgware
Wembley
Kenton
Need a Gas Engineer You Can Trust?
Get in touch today and let Thermal Glow take care of your heating, safely and efficiently.