Boiler Upgrade Scheme (BUS)

Secure an upfront payment towards an energy-efficient boiler upgrade

What is the Boiler Upgrade Scheme?

As part of the government’s heat and buildings strategy, the Boiler Upgrade Scheme
(BUS) is designed to make low-carbon heating systems more attainable
for homes and small businesses in England and Wales.

In line with the government’s 2050 net zero target, the BUS
initiative aims to replace old, inefficient boilers with greener energy-efficient models. 

The existing Boiler Upgrade Scheme is set to run until 2025,
with 450 million pounds worth of funding pledged over 3 years (2022-2025).

How much funding is available?

If you qualify for the Boiler Upgrade Scheme, you’ll receive an upfront payment,
as detailed below, towards an energy-efficient boiler upgrade:

Air source heat pump:


Ground source heat pump:


Biomass boiler:


Am I eligible?

The Boiler Upgrade Scheme is open to homeowners and
small business owners in England and Wales only.

Personal eligibility

You may be eligible for the Boiler Upgrade Scheme if you:

Own your property

(including a business, second home, or property you rent to tenants)

Are replacing a fossil fuel heating system

or direct electric storage heaters

Property eligibility

Your property must:

Have a valid Energy Performance Certificate (EPC)

with no outstanding recommendations for loft or cavity wall insulation.

You can find and check your EPC certificate through the Gov.UK website
If you have outstanding recommendations for loft or cavity wall insulation, we’re here to help.

Save more with a government grant

The government-backed ECO4 and Boiler Upgrade Scheme (BUS) are making renewable energy more affordable than ever for homeowners.

Get a free, no obligation consultation

Are you ready to improve the energy efficiency of your home or business?
We would be delighted to guide you through your options.
Email us at [email protected], call us on 0333 444 5 444, or click below to fill out our enquiry form.

Technology eligibility

To be eligible for the Boiler Upgrade Scheme, your chosen low-carbon upgrade must meet the following criteria:

It should be commissioned on or after 1st April 2022

It must fully replace an existing fossil fuel system, such as oil, gas, or direct electric

The installation capacity should not exceed 45kWth, which is sufficient for most homes

Your chosen technology should effectively meet both the space heating and hot water demands of the property

Any heat pump must have a seasonal coefficient of performance (SCOP) of at least 2.8

How can my home benefit from a boiler upgrade?

Lower energy bills

Switching from your traditional heating system to an energy-efficient boiler can result in huge energy savings and a significant reduction in energy bills.

Reduced carbon footprint

Energy-efficient heating systems produce fewer emissions than other methods, making them the eco-friendly choice for your home and the planet.

Increased property value

Green energy sources are proven to increase the value of a property, with a growing demand for renewable energy amongst savvy buyers.

What type of boiler upgrade would be best for my home? ​

Air source heat pump

One of the many pros of an air source heat pump is that they are suitable for virtually any home.

Air source heat pumps absorb heat from the outdoor environment (even when temperatures are below freezing), and use that heat to deliver comfort and warmth to your living space.

They are installed outside your property, but you don’t need a vast amount of outdoor space.

An outside location that has good airflow with minimal obstructions is ideal.

Ground source heat pump

You do need outdoor space if you opt for a ground source heat pump.

As a general rule of thumb (and if you opt for trenching over boreholes), this should be around twice the surface area of your dwelling.

Ground source heat pumps channel the consistent underground temperature of the earth to transfer heat into your home.

Depending on the scope of your outside space, a ground source heat pump system can be installed vertically using boreholes or horizontally using trenches.

Biomass boiler​

If you have a rural property and you’re off the gas grid, a biomass boiler could be the right renewable energy solution for your home.

A biomass boiler utilises organic matter as a fuel source. Often this includes materials such as wood pellets, chips, or logs.

The boiler burns the organic materials to generate sustainable heat which can be used for central heating and hot water for your home.

How do I apply for the Boiler Upgrade Scheme?

Cotswold Energy Group is an MCS (Microgeneration Certification Scheme), TrustMark and RECC accredited renewables installer for the Boiler Upgrade Scheme.

The admin of the BUS scheme is the installer’s responsibility which means we will process the application on your behalf.

If you believe you are eligible for BUS funding, please contact us and we will: 

  1. Confirm whether your proposed boiler upgrade is eligible for a grant 
  2. Provide a quote for your chosen renewable energy upgrade (with BUS funding deducted)
  3. Provide your details to Ofgem who will contact you to confirm your consent for Cotswold Energy to apply on your behalf
  4. Confirm your boiler upgrade installation date which will be carried out and completed in line with our company standards and the requirements of the Boiler Upgrade Scheme

Our solutions

We have designed and installed some of the most complex and impactful renewable energy solutions for properties of all shapes and sizes.

Upgrade to a smarter, efficient energy system for your home

Boost your comfort and take control of your bills with our renewable energy services:
Air source heat pump and solar PV installed at a bungalow on a community farmstead
“The solar panels and the renewables side of things were always something we’d considered, It was a big motivation in trying to make the property greener; The bungalow feels very different with the heat pump running, it feels drier and warmer. I would definitely recommend [Cotswold] to install it; they installed the whole system in four days!”

Feel the warmth by improving your home’s insulation

Keep the heat in and enhance the efficiency of your home with our insulation services:
“We’re delighted with the result, grass has recovered well and crucially in time for the wedding that was held the summer following install”
Property near Tetbury, Gloucestershire selects Cotswold Energy Group to install Ground Source Heat Pump in garden to cover heating and hot water load

Get a free, no obligation consultation

Are you ready to improve the energy efficiency of your home or business?

Simply fill out the form opposite and one of our experts will be in touch to guide you through your options.

Our team can help you:

If you’d prefer to contact us directly to discuss your project then get in touch via [email protected], call us at 0333 444 5 444 or visit our office.


1 Upper Mills
GL10 2BJ