Grant UK Heating Specialists
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Grant UK Heating Specialists
Together we can work towards the Government's 2050 net zero carbon target by heating our homes sustainably. Get the latest Grant brochures, data sheets and manuals from our comprehensive download centre. To give customers added peace of mind after their standard product guarantee has expired, Grant UK has a range of extended warranty options available.

Grant UK, the leading heating solutions provider in the off-gas heating sector has outlined its vision for the future in a Manifesto for change. Grant UK is pleased to share a new series of air source heat pump videos which are now available to view on their YouTube channel. Comprising of 18 videos.

ServicePlan by Grant helps you maintain your Grant renewable heating system for years to come. For over fifteen the years, Grant oil boilers have been endorsed by the Energy Saving Trust, an independent organisation that strives to help householders make informed decisions about their energy choices by identifying efficient solutions and products to fulfil their needs.
Services
Grant has been designing and manufacturing reliable heating products for nearly four decades. From award winning oil-fired condensing boilers to the latest renewable products, our heating systems have a reputation for quality that is second to none. Our belief in straightforward solutions guarantees that, while our technology is sophisticated, our heating appliances are low maintenance and simple to install.
We have a wide range of options available when it comes to flue systems so we have a helpful tool to put the right flue with the right boiler. Our award winning Training Academy allows us to offer a wide range of training courses including Grant product training and industry qualifications. Grant UK is pleased to share a new series of air source heat pump videos which are now available to view on their YouTube channel.
The Aerona air-to-water heat pumps are a sustainable heating solution. Combining exceptional performance, reliability and value, a Grant heat pump can significantly reduce home heating bills and carbon footprints. With outputs of 6kW, 10kW, 13kW and 17kW the Aerona R32 heat pumps are designed to maintain a reliable and consistent heat output, even at low outdoor air temperatures.
Grant hybrid products combine traditional fossil fuel heating with the green advantage of an air source heat pump to provide a renewable solution to boiler replacements. Discover more about renewable heating and rise to the challenge of achieving a net zero carbon future. Grant's Vortex oil/air source hybrid boiler is hits the mark - the air source heat pump does most of the work.
A heating system's overall efficiency can be significantly improved by combining multiple technologies. From heat pumps to cylinders and effective heat emitters, you can get all of these products from Grant. Featuring intelligent technology, Solo fan convectors deliver faster rates of convection compared to conventional radiators.
Reviews (7)
Katrina Forrester
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
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.
Rosie Slater Watts
Rosie Slater Watts
May 29, 2020
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Helped out massively with a broken down boiler. Thank you!! amazing service
Lynn Dickie
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
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
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
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.