Oil boiler experts
Installation & repair
With over 15 years of oil boiler experience, our OFTEC certified engineers install, service and repair oil boilers across Leeds and West Yorkshire.
Oil boiler installation & repair
As well as being vastly experienced within the gas industry, with over 30 years practice, we are also highly accredited and qualified oil engineers, with over 15 years servicing, installing and maintaining oil boilers across West Yorkshire.
- OFTEC certified oil boiler engineers
- All leading oil boiler brands
- New installations and replacements
- Annual oil boiler servicing
- Emergency oil boiler repairs
- Oil tank inspections and connections
Types of oil boiler
Oil fired boilers can be just as compact as gas boilers - wall or floor mounted, clean and quiet. The two most popular choices are standard (conventional) or combination (combi) boilers, both available as condensing models.
Standard (Conventional) Oil Boiler
A conventional system incorporates a boiler, feed and expansion cistern, and a hot water cylinder - usually in the airing cupboard. Most suitable for larger households where significant quantities of hot water are needed on demand.
Combination (Combi) Oil Boilers
The high-efficiency condensing combi oil boiler is a space-saving choice that now accounts for well over half of all new domestic boilers installed in Britain each year. No separate storage cylinder required.
Condensing Oil Boilers
Both standard and combi oil boilers are available as condensing models. An extra heat exchanger recycles exhaust gases to pre-heat the system water, reducing energy consumption. The energy savings typically repay the additional cost within 2 to 4 years.
Is your oil boiler wasting you money?
Old G-rated oil boilers can be less than 70% efficient - meaning around 30p of every £1 you spend on heating is wasted. All new oil boilers fitted by Mark Thompson Heating Ltd are A-rated and 90%+ efficient.
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!”
Oil boiler FAQs
Are your oil boiler engineers OFTEC certified?
Yes. All of our oil boiler engineers hold OFTEC certification. This is the industry body for oil-fired heating equipment and is required for legal oil boiler work in the UK.
Do you install all types of oil boiler?
Yes. We install standard (conventional) oil boilers, combination (combi) oil boilers and condensing oil boilers from all leading manufacturers.
Can you repair my existing oil boiler?
Yes. Our OFTEC engineers diagnose and repair all makes and models of oil boiler. We carry a wide range of parts to fix most faults on the first visit.
Do you service oil tanks as well as boilers?
Yes. We carry out oil tank inspections, connections and safety checks as part of our oil heating service.
Need an oil boiler installed or repaired?
Free, no-obligation quotes from OFTEC certified engineers across Leeds and West Yorkshire.