LPG boiler to air source heat pump
Typical annual saving: £700–£1,300. Estimated payback: 4–6 years (with grant). Off-gas-grid homes (oil, LPG, electric) typically see the fastest payback in the UK.
Free, no-obligation
Check my £7,500 grant eligibility
Step 1 of 5
~60 seconds
What kind of property is it?
Government-backed process
- Ofgem-Recognised BUS Process
- Government-Backed (gov.uk)
- MCS-Certified Installers Only
- Full Application Handled For You
- GDPR-Compliant, Encrypted Submission
- Direct Liaison With Ofgem on Your Behalf
Grant amounts and eligibility criteria are set by Ofgem and may change. BUSGrant.co.uk is an independent guide, not a government body.
Switching from lpg boiler: what changes
Switching from LPG is one of the fastest-payback heat pump scenarios in the UK. LPG is significantly more expensive per kWh than mains gas, and tank rental + delivery fees add a fixed annual cost on top. Heat pumps eliminate both.
Annual savings of £700–£1,300 are typical, and payback after the £7,500 BUS grant is often 4–6 years. A heat pump also removes the LPG tank and pipework — often a planning win for the look of the property.
BUS scheme — by the numbers
What the Boiler Upgrade Scheme has paid out
Ofgem-administered, paid directly to your MCS-certified installer at the time of install. No application fee, no upfront cost, no claim-back paperwork.
maximum grant per air source heat pump installation
total scheme budget through to March 2028
BUS vouchers issued by Ofgem since launch (2022)
typical voucher-to-install window once approved
How it works
Three steps to a clear answer
No obligation, no pushy follow-ups, no fees from us — ever.
Eligibility check
Owner-occupier or private landlord, property in England or Wales, valid EPC, no outstanding loft or cavity insulation recommendations on the EPC. Most homes qualify — we check yours in 60 seconds.
Match with MCS installer
The grant must go through an Ofgem-approved, MCS-certified installer. We connect you with one (or up to three for comparison) who handles the full BUS application on your behalf.
Grant deducted from quote
The £7,500 is paid by Ofgem directly to your installer, who deducts it from the price you pay. No application fee, no upfront grant payment from you, no complex paperwork.
Common questions
Air source heat pump FAQs
Installed costs typically run £8,000 to £14,000 before grant for a normal home. Detached or larger properties can reach £16,000. After the £7,500 BUS grant in England & Wales, most homeowners pay £500–£8,500. Scotland's Home Energy Scotland scheme offers up to £15,000 in combined grant + interest-free loan, often making the heat pump cheaper than a like-for-like boiler replacement.
Verify any installer's MCS certification at mcscertified.com.
Ready to take a look?
Get matched with MCS-certified installers in your area
The £7,500 BUS grant runs to 2028 — there's no rush, but waiting another year on an old gas, oil or LPG boiler costs you running-cost savings every month. A free survey tells you whether the fit is straightforward, with zero commitment.
Educational content — not a substitute for an MCS-certified survey.
Authoritative sources cited
- GOV.UK — Apply for the Boiler Upgrade Scheme ↗The authoritative source for grant amounts, eligibility, and process. Always cross-check before relying on third-party summaries.
- Ofgem — BUS scheme administration ↗Ofgem administers the scheme and publishes monthly voucher-issued statistics.
- MCS Certified Installer Database ↗Official MCS register — only MCS-certified installers can apply for BUS vouchers.
- Department for Energy Security & Net Zero ↗UK government department setting the scheme's policy framework and budget.
Statistics and figures on this site are derived from these sources unless otherwise stated. Errors? We correct promptly — see our corrections policy.
Continue your research
More UK heat pump resources
Sister sites we operate, each focused on a different decision step.