General Home Heating FAQs

Where can I buy Grant products?

Grant UK distributes through a network of independent and national plumbing and heating merchants. Please use our Merchant Search tool to locate a distributor near you.

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What does ‘net zero carbon’ mean?

Net zero carbon refers to achieving a balance which ensures that the level of carbon dioxide within the atmosphere is not added to or increased. The Government has set the country a target of achieving net zero greenhouse gas emissions by 2050 which will mean that society, its behaviours and everything it produces, will need to collectively not increase the overall level of emissions, including carbon. Wherever possible, no carbon emissions should be produced but when they are, society needs to counteract these emissions with an environmentally friendly solution to absorb any excess carbon from the atmosphere.

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What is ErP?
The Energy Related Products (ErP) Directive has been designed to aid the EU in achieving reductions in energy usage: carbon, NOx and SO2 emissions and other environmental issues such as noise and the use of refrigerants in heat pumps. The Directive is also designed to help consumers identify the most energy efficient products on the market with energy efficiency labelling. The ErP details energy efficiency requirements which appliances must meet and preferably exceed. Manufacturers must ensure that their products are prepared for the new legislation changes, incorporating product updates to improve efficiency levels (e.g. fitting high efficiency circulating pumps).
What is the Renewable Heat Incentive (RHI)?

The Renewable Heat Incentive (RHI) was a Government initiative introduced to encourage and reward people for using renewable fuels to heat their properties. The Domestic RHI Scheme closed to new applications in March 2022.

Who is eligible for the Boiler Upgrade Scheme?

The Boiler Upgrade Scheme (BUS) is a Government funding programme that opened in the Spring of 2022, following the closure of the Domestic RHI Scheme. The BUS is open to eligible applicants in England and Wales who make the swap from a fossil fuel boiler to a low carbon heat pump.

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What is Warmer Homes Scotland?

Warmer Homes Scotland is a Scottish Government funded programme which offers funding and support to eligible households in Scotland for energy saving improvements for their home.

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What is the Nest Scheme?

The Nest Scheme is run by the Welsh Government and it provides free, impartial advice to Welsh householders about the ways in which they can make their home warmer and more energy efficient. For eligible Welsh households, funding is also available for the installation of home energy efficiency improvements.

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What is the standard guarantee on your products?

All Grant products have a statutory 12-month guarantee. If the product is registered via our website within 30 days of installation, this is upgraded to a standard warranty: 2 years on oil boilers, air source heat pumps and hybrids, 5 years on solar thermal, 2 years on cylinder components and 25 years on the cylinder body. These warranty periods are subject to Terms and Conditions.

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How do I find out if my boiler has a guarantee?
When a product is registered via our online system, we send an email confirmation with your guarantee paperwork detailing the product registered along with Terms and Conditions. If you have not received anything, please contact our customer services department on 01380 736920.
I have heard I can get a ten year guarantee on my oil boiler, is this correct?

We do offer a ten year guarantee on our Vortex Pro Boiler range; however, this is subject to certain Terms and Conditions such as the product being installed by a Grant G1 installer and a Grant Mag One filter being fitted to the system. For details on how to find a G1 Installer, please visit our Find an Installer search.

How can I find G1 Installers and/or service engineers in my local area?

Grant UK’s Find an Engineer search facility allows homeowners to find local installers and engineers in their area. Simply click on ‘Find an Engineer’ under the ‘Support’ header and then enter your postcode. The search will then bring up a selection of G1 installers and service engineers based locally to you. You can also filter your search to suit your requirements.

Can G1 Installers offer extended guarantees on Grant’s renewable products as well as oil boilers?

G1 Installers can activate extended guarantees on the Grant products they are accredited to install. This can include Grant’s Aerona³ air source heat pumps and VortexAir Hybrid models. In order to activate the longer guarantee periods, the G1 Installer must install the appliance in full accordance with the installation instructions and then register the product via their online G1 Portal.

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My Grant appliance was installed by a G1 Installer so who should register my product?
If your Grant product was purchased and installed by a G1 Installer, it is your installer’s responsibility to register the appliance via their online G1 Portal. Once they have registered your product, your G1 Installer will receive a copy of the registration paperwork and they can then forward this through to you for your records.
Can I add anything to my heating system to prevent it from freezing?
Yes, there are a number of products which may be used to give frost protection to domestic central heating systems.  For total system protection against freezing particularly during extended periods without electrical power, we recommend the use of a combined heating system antifreeze and corrosion inhibitor used in accordance with the manufacturer’s instructions.
Is Grant UK a member of RECC?

Yes - Grant Engineering (UK) Ltd is a member of RECC (Membership No. 00070263). 

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Is Grant UK TrustMark registered?

Yes, Grant Engineering (UK) Ltd is TrustMark registered (TrustMark Licence Number 1867449) for Air Source Heat Pumps.

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How can I make a general complaint to Grant UK?

We consider and respond to all complaints and issues, no matter how they are raised or what they refer to. We take every opportunity to resolve complaints at the first point of contact where possible. To make a complaint, please use the contact forms on this site, or alternatively email info@grantuk.com. If a complaint cannot be resolved in-house, consumers can refer the complaint to the Renewable Energy Consumer Code

What is Grant UK's VAT Number?

Grant UK's VAT Number is 675857181.

Who is Grant UK's insurance provider?

Please click here to download a copy of Grant UK's Insurance Arrangements. 

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Contact us using the details provided or by completing the dedicated contact form.

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Package Solutions

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.

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