Grant Oil Boilers


Add Heat are Grant G1 Accredited Installers, meaning that our engineers are passed Grant’s accreditation criteria allowing us to offer extended warranty on our Grant Oil Boilers.

What is a Grant G1 Accredited Installer?

Grant G1 Accredited Installers are accredited to install Grant Oil Boilers to the highest standard. This means that we have passed Grant’s accreditation criteria plus we can offer extended warranties on Grant Oil Boilers.

Our fully trained engineers specialise in Grant Oil Boiler installations and can offer exclusive benefits to homeowners.

Why choose Grant for your oil boiler?

Grant want to provide homeowners with peace of mind when they are upgrading their oil heating system and only invite heating engineers who are deemed as reputable, quality conscious and representing value for money.

Consumer group Which? have published the results of their 2019 oil boiler survey. Amongst the range of products to receive Which? Best Buys this year are all of Grant’s Vortex Pro Utility oil boilers. This is the third year running that Grant boilers have achieved this accolade making them the only oil boiler brand to be awarded Which? Best Buys in 2017, 2018 and 2019.

Grant check the installer’s OFTEC accreditation on a regular basis. However they always recommend to homeowners that they verify a heating company’s membership status with the awarding bodies directly via their relevant websites.

Award Winning Oil Boilers

Award winning Grant Vortex condensing boiler range, available in outputs from 12-70kW. Endorsed by the Energy Savings Trust, the appliances are currently some of the most efficient oil-fired boilers on the market.

Why Do I Need a Heating & Hot Water Installer?

Due to the complexity of modern heating systems, installation, service or repair work should only be undertaken by a qualified heating engineer.

This is why most manufacturers of heating and hot water appliances such as boilers, solar thermal and heat pumps only supply through trade merchants, rather than directly to end users.

Dedicated, trusted tradesmen in the North West

Quality Workmanship

At Add Heat we pride ourselves on our high standard of work taking care of even the smallest detail to ensure you are 100% happy with the service carried out. Our reputation is what we have built our business upon and our attention to detail is what keeps our customers happy.

Expert Advice

With over 25 years experience in the heating industry Add Heat are proud to be able to offer you expert advice and answer any of your central heating questions. We have time served experienced tradesmen to help you whenever you need us. With Add Heat you know you are in safe hands.

Energy Saving

We are home energy savings experts and can provide you with expert advice on how to create and maintain a more energy efficient home or business.

Our boiler services

Our engineers are fully-qualified Grant G1 Accredited Installers. They’re specialists in installing, servicing and repairing Grant Oil Boilers.

Worcester Accredited Partner OFTEC Registered Gas Safe Register Federation of Master Builders Checkatrade Member

We are OFTEC Registered

OFTEC is the Oil Fired Technical Association. They are recognised by the Government, oil companies, heating appliance and tank manufacturers as being the acceptable trade body in technician training & assessment for the domestic heating, oil distribution and commercial oil firing industry.

For the oil industry in England and Wales, OFTEC registered technicians are the only people defined as competent and able to self-certify their work without the need for informing the local building control department.

If you would like to find out more about OFTEC, you can call 01473 626298 or visit their website.

Why choose Add Heat?


Here are some great reasons to choose Add Heat as your Grant Accredited Installer:

  • Free no-obligation quotes

  • Extended guarantees

  • Help and advice for your specific needs

  • Experts in installation, servicing and repair

  • We're OFTEC registered engineers

Why choose Add Heat?

Locations we cover


We cover a large area of approximately 20 miles radius of Macclesfield

Request a call back