While originally only open to homes with gas boilers, the ECO scheme is now also offering grants for oil (and LPG) boilers. This means that those who meet the eligibility criteria can apply for a grant to cover some or all of the cost of installing a brand new oil boiler. The result? Less energy wasted, a more comfortable home and significantly cheaper heating bills.

To qualify for a free oil boiler grant you need to be:

  • A permanent resident in the UK
  • A homeowner or private renter with your landlord’s permission
  • In receipt of one of the following benefits:
    • Child Tax Credit + Annual household income is below a certain threshold (determined by how many people live in the property
    • Working Tax Credit + Annual household income is below a certain threshold (determined by how many people live in the property)
    • Universal Credit + Monthly earned income is below a certain threshold (determined by how many people live in the property)
    • Income-related Employment and Support Allowance (ESA)
    • Income-based Job Seekers Allowance (JSA)
    • Income Support
    • Pension Credit (Both Guarantee Credit and Savings Credit or Guarantee Credit Only).

Your current boiler usually needs to be at least 8 years old to qualify for replacement.

Check your eligibility for a free oil boiler grant now

Oil boiler manufacturers

If you are successful in your application it’s likely that your new oil boiler will be manufactured by on the of the following companies. While the final choice of boiler will be made by the supplier completing the installation, here is a little background on the leading manufacturers in the UK.


If protecting our environment is important to you, then you’ll love Grant. Ecological responsibility underpins their operations and, in addition to energy efficient oil boilers, they also develop renewable products such as solar, biomass, air source heat pumps and energy management systems.

Grant is an award winning company with many endorsements including the Energy Savings Trust, Clearskies, Benchmark and the Solar Trade Association. Their products have also previously achieved Which? Best Buy status too. To support their environmental responsibilities Grant manufacture ultra high efficiency condensing oil boilers; the Grant Vortex and VortexBlue oil-fired condensing boiler ranges deliver up to 93.3% gross efficiency. There are over 60 variations of Grant oil boilers with outputs ranging from 12-70kW.

Firebird Heating Solutions

For homes that need to keep their oil boiler outside, Firebird is a great choice manufacturer.
Although originally established in Ireland in 1980, today they distribute their products all over the world. The company manufactures both internal and external oil boilers ranging from 12 – 100kW in over 60model variation, as well as range cookers and solar thermal systems.

Firebird Heating Solutions developed the UK’s first Blue Flame oil fired condensing boiler for the domestic heating market: EnviroBlue™ and Enviromax™ Blue Supreme ranges utilise the latest Riello RDB Blue Flame technology burners. Heating oil is atomised at a high pressure before being mixed with air and ignited. Hot combustion gases are then re-circulated through the burner blast tube via a specially designed slot. The result is a blue flame with near perfect combustion. This not only improves fuel efficiency and which should reduce annual heating costs but also reduces your home’s carbon footprint.


Mistral is a proudly British company which has been producing oil-fired heating solutions for over 40 years in Shropshire. The product range includes Standard and Mega combination oil fired boilers ranging from 15-70kW and Sealed Systems models. Mistral can manufacture EVERY boiler in their range as indoor, outdoor, condensing or non-condensing.

The Mistral boiler design includes “an innovative central waterway Y-section that achieves the best heat transfer result giving better outputs, smoother running and greater efficiencies”. Mistral’s condensing oil boiler can reach efficiencies of up to 93%.


Warmflow has been supplying homes in both the UK and Ireland with heating solutions for over 45 years. The product range includes the UK and Ireland’s first AA rated combi boiler. The company also produces hot water cylinders, ground source heat pumps and wood pellet boilers, all of which are manufactured in Northern Ireland.

Warmflow oil boilers include the Riello burner, a plastic flue system and inbuilt temperature control for safety. The U-Series oil boiler is designed to be as compact as possible so it can fit into most standard kitchen cupboards and is available in outputs between 15 – 44kW. The company also offers an external oil boiler range, the K-Series (15-44kW), and the B-Series which is specifically designed for installation in garages and boiler houses.

Worcester Bosch

Worcester Bosch is a well-known brand in heating solutions with over 50 years of expertise underpinning their reputation as a market leader. In addition to holding the Royal Warrant for supplying boilers to the Royal Estate of Sandringham, their boilers have been awarded the Which? Best Buy award for 7 years running and include a 5 year warranty as standard.

The Worcester Bosch boiler range is called Greenstar with oil boilers either falling into the Danesmoor or Heatslave II lines. They produce combi, system and regular boilers which suitable for installation in the kitchen, utility room or outside the home. They also produce a range of additional control options including programmable room thermostats and intelligent weather sensors.

Could you qualify for a free oil boiler grant?

It couldn’t be easier to apply for a free oil boiler grant. Simply enter your postcode to get things started; it only takes a couple of minutes to find out if you could qualify and you could be enjoying the benefits of a brand new, more efficient boiler in no time.

Apply for an oil boiler grant now

Popular articles