Air source heat pump installers in Cardiff
MCS-certified installers serving Cardiff homeowners. Free written quotes, full Boiler Upgrade Scheme application support (up to £7,500), and no high-pressure follow-ups.
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.
Cardiff & heat pumps
What Cardiff homeowners should know
Cardiff is the largest city in the Welsh BUS-grant catchment area. The same £7,500 grant applies as in England, administered through Ofgem with the same MCS-certified-installer requirement. What differs is the ratio of off-gas-grid properties: while Cardiff itself is largely on the gas grid, the rural Welsh hinterland (Vale of Glamorgan, Bridgend, Caerphilly fringes) has higher LPG and oil heating rates than equivalent English areas.
Cardiff's housing stock is dominated by 1900-1930 red-brick terraces (Roath, Cathays, Splott, Grangetown) and inter-war semi-detached (Llandaff, Llanishen, Whitchurch). The terraces typically have small gardens, which makes outdoor-unit siting careful — most installers locate the unit in the small rear yard with acoustic enclosures to protect the neighbour relationship.
Welsh-language considerations matter for BUS applications: the Ofgem application portal is English-only, but installers must complete forms on the homeowner's behalf, so this doesn't usually block applications. A useful local resource is the Welsh Government's NEST programme, which provides separate energy-efficiency grants stackable with BUS for low-income households across Wales. An MCS-certified Cardiff installer experienced with NEST + BUS combined applications is worth seeking out — these installers often deliver heat-pump systems near zero out-of-pocket for eligible households.
Is your home ready?
6 signs an air source heat pump fits your home
Modern heat pumps suit far more UK homes than older models did. A short MCS survey confirms the fit — no commitment to install.
Old gas/oil/LPG boiler
Replacing a 12+ year old boiler is the natural switch point. The £7,500 grant changes the maths — heat pump may cost less than a like-for-like boiler swap.
Reasonable insulation
EPC C or D, loft insulated, cavity walls filled if applicable. Doesn't need to be perfect — modern heat pumps handle EPC D fine.
Outdoor space at side or rear
Need ~1 m² for the outdoor unit, ideally not facing the front of the house. Permitted development covers most installs without planning permission.
Off mains gas
Oil, LPG and electric heating run far more expensively than gas. Heat pump payback in these homes can be 4–7 years vs 10–14 years for gas swaps.
Listed building / conservation area
Possible, but you'll likely need planning consent. Allow extra time and budget for a sympathetic install — siting and acoustic enclosures matter.
Microbore pipework / single-pane
Heat pumps run cooler water through radiators than boilers. Microbore pipework, very small radiators, or single-glazed windows may need attention first.
Not sure?An MCS-certified installer's heat loss survey takes ~60 minutes and tells you whether the fit is straightforward, needs a few upgrades first, or isn't the right choice. Most surveys are free and there's no obligation.
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?
Heat pump options for Cardiff homeowners
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.