Business Details
48 Years
experience
Sustainable Home Heating Solutions
Grant UK has been a leader in sustainable heating solutions since 1978, specialising in high-efficiency oil boilers, air source heat pumps, and hybrid systems. Our commitment to innovation has earned us over 35 industry awards, recognising both product excellence and customer support. We prioritise renewable technologies to address climate change while maintaining affordability for homeowners. Our product range includes HVO-compatible oil boilers, low-carbon heat pumps with Quiet Mark accreditation, and comprehensive underfloor heating systems. With decades of engineering expertise, we provide complete heating packages including radiators, hot water cylinders, and smart controls.Our nationwide network of certified installers ensures professional service and technical support. We offer extended warranties, servicing plans, and eligibility for government grants through schemes like the Boiler Upgrade Scheme. Our corporate social responsibility initiatives reflect our dedication to environmental education and community engagement. Through continuous product development and installer training, we empower homeowners to transition to sustainable heating solutions. Our mission remains to deliver reliable, future-proof heating systems that balance efficiency, cost-effectiveness, and environmental responsibility.
Services
Oil Boilers
Air Source Heat Pumps
Hybrid Heating Systems
Underfloor Heating
Solar Thermal Systems
Hot Water Cylinders
Aluminium Radiators
Heating Controls
Details
- Year established: 1978
Highlights and features
- Over four decades of experience in heating engineering
- Award-winning renewable heating technologies
- Invested in low-carbon product development
- Nationwide network of certified installers
- Quiet Mark accredited air source heat pumps
Associations and certifications
- Quiet Mark
- MCS Approved
Services
Air Source Heat Pumps
Grant's Aerona and Aerona 290 air source heat pumps use R32 refrigerant for high efficiency. Quiet Mark accredited with 7-year guarantees when installed by certified engineers. Eligible for government grants through the Boiler Upgrade Scheme. These systems provide sustainable home heating with smart controls for optimal performance.
Oil Boilers
HVO-compatible Vortex oil boilers available in floor-standing, wall-hung, and combi models. Up to 10-year guarantees with G1-certified installers. Designed for high efficiency using advanced burner technology. Compatible with renewable systems for hybrid configurations. Includes boiler house solutions for commercial applications.
Underfloor Heating
Uflex underfloor heating systems provide even heat distribution. Available in standard and MINI versions for different property types. Compatible with renewable energy sources. Includes smart controls for zoned temperature management. Designed for easy installation in new builds and renovations.
Solar Thermal Systems
Grant Solar Collectors, WinterSol, and CombiSol systems harness solar energy for water heating. Integrated with conventional boilers for year-round efficiency. Includes storage cylinders and control systems. Reduces reliance on fossil fuels while maintaining hot water availability during low sunlight periods.
Heating Controls
EvoLink hybrid system hub and Aerona Smart Controllers optimise heating efficiency. Compatible with air source heat pumps, boilers, and underfloor systems. Enables remote monitoring via mobile devices. Integrates with renewable technologies for automated energy management and reduced running costs.
Questions
What renewable heating options does Grant UK offer?
We provide air source heat pumps, solar thermal systems, hybrid solutions, and HVO-compatible oil boilers for sustainable home heating.
Are Grant heating systems eligible for government grants?
Yes, our MCS-approved Aerona heat pumps qualify for the Boiler Upgrade Scheme with grants up to £7,500.
How can I find a certified installer for Grant products?
Use our online installer finder tool to locate G1-certified heating engineers in your area.
What warranties are available for Grant heating systems?
Air source heat pumps have 7-year guarantees, oil boilers up to 10 years when installed by certified professionals.
Can existing oil boilers be converted to renewable fuels?
Our Vortex oil boilers are HVO-compatible and can be converted using simple retrofit kits.
Do you offer training for heating engineers?
Yes, our eLearning Academy provides on-demand training courses for installing and maintaining Grant renewable systems.
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Reviews (6)
Katrina Forrester
Dec 04, 2021
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Dreadful, do not expect any customer service from this company. Grant sold me a faulty boiler.....it took several months at my cost.....to establish that it had a cracked heat exchanger and what did they do? They lost my complaint paperwork.....forgot to call out one of their Engineers to look at the problem (whoops they do not have their own engineers, they sub-contract!) and then lost the paperwork again!!! Their own representative has been to site agreed there was a fault and then Grant sent me paperwork asking me to waive my consumer rights in advance of rectifying the matter!!!!. Grant did
Ian Ballard
Jun 20, 2021
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Positive:Professionalism,Quality,Value
As an Oftec registered engineer I always specify Grant oil boilers and have done so for many years, I even installed one in my own home. All in all they are a great company with great products. Highly reccomended.
As an Oftec registered engineer I always specify Grant oil boilers and have done so for many years, I even installed one in my own home. All in all they are a great company with great products. Highly reccomended.
Lynn Dickie
Jun 10, 2018
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Having an oil boiler fitted at the moment, was asked to buy a Grant by the plumber, have always fitted Worcester in the past. Bought a 15/26 utility which must be one of their most popular sizes and which is supposed to offer four outputs depending on the jet fitted. The outputs are 15,20,23 and 26kW. I was planning to use 20kW to give a bit of headroom for future extensions but I was irritated to find (after reading the detailed installation instructions) that to make use of the the two lower outputs a different blast tube must be purchased and is not supplied. In my opinion if the boiler is advertised
Valerie Reis Fernandes
Aug 24, 2017
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Beware. My new boiler cost me 3000 including installation and failed after 15 months. Grant did their best to convince me it was my system at fault and wanted to charge me for another new one! Customer service is dire and hope I never have to deal with them again.
Andy Frances
Jul 04, 2017
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We've had a Grant Combi boiler for 9 years. In that time it's cost me a fortune to keep 'on the road'. In fact we spend more every year on the boiler that we do our 2 cars! Now, after 9 years of financial pain and constantly having to top up the thing the service engineer has told me the water jacket has completely corroded. This part isn't replaceable so it's new boiler time! I have appealed to Grant who have said that it's not their problem, it's the installers fault (even though they've admitted to changing the boiler design since ours was installed to overcome problems!). They've passed me
Brianna'S. Hair & Beauty Salon
May 04, 2017
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I can highly recommend Grant oil boilers. The key is to have the boiler correctly specified and installed to avoid common issues you may find online. I have been installing Grant boilers for over 12 years and never had any problems. The company is very helpful when specifying their Hybrid and air source heat pump range.
