Gas boiler experts
Installation & repair
Here at Mark Thompson Leeds Ltd we are accredited installers for Worcester Bosch and other manufacturers. We are also past winners of a national Worcester Bosch installer prize for our attention to detail on every job we undertake.
New Gas Boiler InstallationNew boiler installation in Leeds
New boilers offer vast manufacturer guarantees, giving customers peace of mind that their brand new appliance is covered for as long as 12 years.
- Free, no-obligation survey and quote
- Accredited installers for Worcester Bosch and other manufacturers
- Old boiler removed and disposed of responsibly
- Manufacturer warranties up to 12 years
- Gas Safe certificate issued on the day
Replacing Your Old BoilerWhich type of gas boiler do you need?
Choosing a heating system with a high-efficiency condensing boiler and the correct heating controls can make a significant difference to your heating bills over time. There are three main types of gas boiler:
Combination (Combi) Boilers
These boilers heat water instantaneously on opening a hot tap, so there is no need for a storage cylinder - saving space and simplifying installation.
System Boilers
Designed to generate heat for your home and store hot water in a separate cylinder. The cylinder can be situated anywhere in your home with no need for a tank in the loft.
Regular (Conventional) Boilers
Work in conjunction with a hot water storage cylinder and cold water top-up tanks to provide both central heating and hot water. Ideal for homes with existing traditional systems.
Is your boiler wasting you money?
Old G-rated boilers can be less than 70% efficient - meaning around 30p of every £1 you spend on heating is wasted. All new boilers fitted by Mark Thompson Heating Ltd are A-rated and 90%+ efficient, helping you save money year after year.
Emergency Gas Boiler Repair LeedsSame-day callouts
A broken boiler is stressful - especially in winter. We offer same-day emergency callouts across Leeds, and our engineers carry an extensive range of parts to fix most faults on the first visit.
- Same-day emergency callout across Leeds
- All makes and models diagnosed and repaired
- Fault codes identified and fixed
- Pressure, pilot light & thermostat issues
- Honest advice on repair vs replacement
Approved installers for leading brands
Customer Reviews
Genuine reviews from verified customers across Leeds and West Yorkshire.
West Yorkshire · October 2025“We've been using Mark and Sam for 18 months. Whether a boiler service, repair or new installation of our hot water cylinder, the work has always been excellent. There's never delays, the work is exemplary, and when we needed a repair Sam came the same day. Both Mark and Sam are brilliant to deal with - friendly and professional. I can't recommend them highly enough.”
Sally Gutteridge · November 2025“Fantastic service highly recommended! Reached out to me directly after posting a job on MyBuilder and my local community group, very impressed with the effort, efficiency and a job well done. Had my shower replaced after it had become quite tired, and the new one is great! Sam even adjusted the water pressure in the house as he said it was low. Would definitely use them again thank you!”
West Yorkshire · October 2025“We had a fantastic experience with Sam for our boiler installation. From the start, he was extremely supportive and took the time to talk us through different options, especially as our house layout made things more complicated than usual. Sam was patient, knowledgeable, and helped us make the right decisions without ever rushing us. The quality of his work was excellent and his professionalism and attention to detail really stood out. We'd highly recommend Mark Thompson Ltd.”
Phil · January 2026“We recently had our boiler replaced and relocated, and once again the service from Mark Thompson and his team was outstanding. We’ve been using Mark for around 20 years now, and the level of professionalism, reliability, and courtesy has never wavered. This time, Harry carried out the installation, and he was an absolute credit to the team - polite, dedicated, and incredibly tidy. Each day the workspace was left spotless, and the quality of the workmanship was fantastic. The job was completed neatly, efficiently, and with real attention to detail. Highly recommended.”
West Yorkshire · September 2025“We've been putting off replacing our 25-year-old boiler for years, always concerned about who to trust. From the moment I contacted Mark, he was fantastic - always replied to queries incredibly quickly, came on time to give a quote, and the price he quoted was the price we paid. No nasty surprises. Harry and Rio worked tirelessly to site the new boiler. We've finally found a company we will definitely use from now on and will be recommending to family and friends.”
Marcel Manners · November 2025“Harry recently fitted a new boiler for me and I couldn’t be happier with the service. From start to finish, he was professional, punctual, worked efficiently, and left the area spotless once the job was done. The boiler is working perfectly, and I feel confident knowing it was installed by someone so skilled and trustworthy. I wouldn’t hesitate to recommend this company to anyone in need of a reliable plumber. Top-notch work!”
Gas boiler FAQs
Do you offer same-day emergency gas boiler repair in Leeds?
Yes. We offer same-day emergency callouts for gas boiler breakdowns across Leeds and West Yorkshire. Call 0113 259 0088 and we'll get an engineer to you as quickly as possible.
Are you Worcester Bosch approved installers?
Yes. We are Worcester Bosch approved installers, allowing us to offer extended manufacturer warranties up to 12 years on selected models. We also install Vaillant, Baxi and Potterton.
What types of gas boiler can you install?
We install combination (combi) boilers, system boilers and regular (conventional) boilers. Our engineers will survey your home and recommend the best type for your property.
Need a new gas boiler or repair?
Free, no-obligation quotes. Most emergency callouts available same day across Leeds and West Yorkshire.