SMSSolar Maintenance Solutions
BUS £7,500 grant

Boiler Upgrade Scheme 2026

The Boiler Upgrade Scheme (BUS) is the UK government's replacement for the Renewable Heat Incentive — £7,500 toward an air source heat pump (ASHP) or ground source heat pump (GSHP) install. We're MCS-certified for both, and we pre-deduct the grant from your quote.

Funding amount

£7,500 toward an ASHP or GSHP install. £5,000 cap for biomass boilers. Grant funded by Ofgem, paid to installer; you pay the post-grant balance.

Eligible if
  • Owner-occupier (England or Wales)
  • Replacing a fossil fuel boiler (gas, oil, LPG, coal) — NOT replacing electric or existing heat pump
  • Property has a valid EPC
  • No outstanding recommendations on EPC for cavity wall or loft insulation
  • Heat pump must be MCS-certified install
Not eligible if
  • Tenants (must be owner-occupier)
  • Properties in Scotland (separate Home Energy Scotland Grant)
  • New-build properties (built post-April 2022, must already have low-carbon heating)
  • Replacing existing heat pump, electric heating, or biomass boiler
Step by step

How the application works

01

EPC + property check

We confirm EPC validity and any outstanding insulation recommendations. Most properties qualify; some need cavity wall or loft top-up first.

02

Heat loss survey

Free heat loss calc per MCS standard. Determines correct heat pump kW size for your property.

03

BUS application

We submit to Ofgem on your behalf. Voucher issued within 2 weeks.

04

Install

5–10 day install for ASHP, 10–20 days for GSHP including ground works. Hot water cylinder + radiator upgrades as needed.

05

Voucher redemption

We claim £7,500 from Ofgem post-install; you pay only the post-grant balance.

Frequently asked

FAQs

How much does a heat pump cost AFTER the BUS grant?
A typical 9 kW air source heat pump install costs £14,000–£17,000 gross. After £7,500 BUS grant: £6,500–£9,500 to you. Add radiator upgrades if needed: £500–£2,000.
How long does the BUS grant take?
Voucher application 2 weeks, install scheduling 4–8 weeks, voucher redemption automatic post-install. End-to-end 6–10 weeks typically.
Can I combine BUS with solar?
Yes — many of our customers fit BUS-funded heat pump and ECO4-funded solar simultaneously. Different schemes, different funders, both stack.

Check your eligibility

10-minute phone call to confirm. No obligation if you're not eligible. We handle the application end-to-end.

Check Eligibility Call 0800 099 6606
Call us