Your Complete Guide to the Boiler Upgrade Scheme (BUS) in 2025

The government's Boiler Upgrade Scheme (BUS) is one of the most significant financial incentives available to UK homeowners looking to switch from gas or oil heating to a low-carbon heat pump. In 2025, the grant stands at £7,500 — and at Maybury Energy Services, we manage the entire application on your behalf. We are an MCS certified heat pump installer serving Coventry, Birmingham, Solihull, Warwickshire, and the West Midlands.

What Is the Boiler Upgrade Scheme?

The Boiler Upgrade Scheme is a government grant administered by Ofgem that provides a one-off payment towards the upfront cost of replacing a fossil fuel boiler with a more energy-efficient heat pump. The scheme is available in England and Wales and is designed to accelerate the UK's transition away from gas heating ahead of the 2050 net zero target.

The current grant values are:

• Air source heat pump: £7,500 (replacing gas or electric heating)
• Air source heat pump (oil or LPG): £9,000
• Ground source heat pump: £7,500

Am I Eligible?

To qualify for the BUS grant, you need to meet the following criteria:

• Your property must be in England or Wales
• You must own the property (homeowners and landlords both qualify)
• The property must have a valid Energy Performance Certificate (EPC) with no outstanding recommendations for loft or cavity wall insulation
• You must be replacing an existing fossil fuel heating system (gas, oil, LPG, or electric). Properties on oil or LPG qualify for an increased grant of £9,000
• The heat pump must be installed by an MCS certified installer — such as Maybury Energy Services

Newly built homes or properties that have never had a heating system are not eligible. If your EPC flags insulation improvements, these will need to be addressed first — something our team can also help arrange.

How Does the Grant Work?

The BUS grant is not paid directly to you as the homeowner. Instead, it is paid to your MCS certified installer, who then deducts it from your installation invoice. This means you simply pay the net cost after the grant has been applied — there is no waiting around for a rebate.

At Maybury Energy Services, we handle the full grant application process from start to finish. You don't need to fill in any Ofgem paperwork yourself. We submit the application, receive the grant voucher, and apply it directly to your quote. It's genuinely as straightforward as that.

What Does an Air Source Heat Pump Cost After the Grant?

Without any grant, a quality air source heat pump installation for an average UK home typically costs between £8,000 and £15,000 depending on the size of the property, the system capacity required, and any associated work such as cylinder replacement or radiator upgrades.

With the £7,500 BUS grant applied, installations at Maybury Energy Services start from around £3,000 — and if you're currently on oil or LPG, the £9,000 grant makes the switch even more affordable. Making the transition to low-carbon heating genuinely accessible for most homeowners. We provide a full, transparent written quote before any work begins so you know exactly what you're paying.

Will a Heat Pump Work in My Home?

One of the most common concerns we hear is whether a heat pump is suitable for an older or less well-insulated property. The honest answer is: it depends — and that's exactly why we carry out a thorough free property survey and heat loss calculation before recommending any system.

Modern heat pumps operate at flow temperatures that are lower than a gas boiler, which means they work best alongside larger radiators or underfloor heating. In some cases, we may recommend upgrading a few radiators as part of the installation to ensure the system performs optimally. This is always discussed upfront and included in your quote.

The good news is that the vast majority of homes in our service area — across Coventry, Birmingham, Warwickshire, Solihull, Rugby, Nuneaton, and the wider West Midlands — are suitable candidates for an air source heat pump installation, particularly given how much home insulation standards have improved in recent decades.

How Long Does Installation Take?

A typical air source heat pump installation takes between 3 and 5 days, depending on the complexity of your existing heating system and whether any additional work (such as a hot water cylinder installation) is required. Our team works cleanly and efficiently, and we aim to minimise disruption to your household throughout the process.

Following installation, we commission the system, carry out performance tests, and walk you through how to operate your new heat pump. We also provide all MCS certification documents, which you'll need for the grant and for any future property sale.

Will the BUS Grant Still Be Available?

The government has committed to the Boiler Upgrade Scheme through to 2028, and the current grant level of £7,500 has been in place since October 2023. While we cannot predict future policy changes, there has been no indication that the scheme will be withdrawn or reduced in the near term.

If anything, with the government's ongoing push to decarbonise home heating and meet its net zero commitments, the incentive to switch is arguably stronger than ever. We'd always recommend acting sooner rather than later to take advantage of the current grant level.