Guildford: £2,500 air-to-air heat pump grant

Heating in Guildford follows a fairly ordinary England-wide split: about 84.2% mains gas, 12.5% electric, and a small tail on oil, LPG or solid fuel. Whatever your own home runs on, the grant rule is the same everywhere - replace it with an air-to-air heat pump via an MCS-certified installer and the payment applies.

84.2% of Guildford's EPC-certified homes heat on mains gas, 12.5% on electric and 3% on oil, LPG or solid fuel, heating a home of the kinds we track locally runs to roughly £565 a year, 35% of rated homes sit at EPC band C, the local mode and this fuel-mix figure covers 99.4% of Guildford's EPC certificates, so it is a real, high-confidence local read, not a national estimate applied to your postcode.

Everything about whether the grant pays a Guildford homeowner turns on one choice: replacing the existing heating, or leaving it in place. We set out both routes with the same weight, not as a blanket promise either way.

Eligible - you replace your heating. If an air-to-air heat pump replaces a fossil-fuel or electric system (mains gas, oil, LPG, electric storage heaters or direct electric) and is fitted by an MCS-certified installer, the £2,500 applies, and the old system is decommissioned rather than run alongside the new one.

Not eligible - you keep your boiler. If you keep your existing heating and add cooling as a standalone unit, that cooling-only add-on does not qualify for the Boiler Upgrade Scheme grant, however it is marketed. Adding air conditioning while keeping your gas boiler is a private-pay job, carried out by an F-Gas / REFCOM-registered engineer rather than an MCS-certified one.

The grant itself is law and your eligibility is real, but no installer can be MCS-certified for air-to-air yet, so no Boiler Upgrade Scheme voucher can be issued today. Certified air-to-air products are already listed; installers can certify once the certification bodies gain UKAS accreditation, and MCS has not set a date for that. Get quotes now, but treat the grant as pending rather than banked.

Grant rules as of August 2026 and subject to change, so always confirm the current terms on gov.uk before applying. The grant itself is a national government scheme - Guildford Council has no say over your eligibility for it. If your Guildford home also needs planning permission for the outdoor unit, that is a separate, local question our planning pages cover.

MCS - the certification scheme for registered installers - is the quality standard your installer must hold for the grant to pay. It certifies the installer and the installation work, never the homeowner and never GetComfort.

From Guildford, a grant-eligible air-to-air job is routed to an MCS-certified installer, while a pure cooling job goes to an F-Gas / REFCOM-registered engineer - the licence that covers refrigerant-only work. Homeowners researching this grant mix the two up more than anything else.