The Boiler Upgrade Scheme (BUS) is a UK government grant programme that provides homeowners in England and Wales with up to £7,500 towards a low-carbon heating system — typically an air source or ground source heat pump. There is no income limit; the grant is available to most eligible owner-occupiers.

You can receive up to £7,500 for an air source or ground source heat pump, or £2,500 for a biomass boiler. The grant is applied directly to your installation cost – it’s deducted from your invoice, not paid to you as cash.

To qualify for the BUS grant, you do need to be replacing an existing fossil fuel or electric heating system with a low-carbon alternative. You can’t claim the grant while keeping your existing boiler as a backup system.

A standard boiler replacement typically takes one day. A heat pump installation usually takes one to two days depending on your property and system complexity. We’ll give you a clear timeline before any work begins.

Modern heat pumps work effectively in the vast majority of UK homes. They work best in well-insulated properties, but our free survey will assess your home and confirm suitability before you commit to anything. We only recommend a heat pump if it’s genuinely right for you.

IGNI applies for the grant on your behalf. As an MCS-certified installer, we’re authorised to submit BUS applications directly through Ofgem. You don’t need to deal with any government forms – we handle it all and simply deduct the grant from your invoice.