Find an MCS-certified UK installer

Why MCS certification matters

MCS (the Microgeneration Certification Scheme) is the UK quality assurance scheme for low-carbon heat and power technologies. We only index MCS-certified installers because:

• BUS grant eligibility. The £7,500 Boiler Upgrade Scheme grant for heat pumps requires the installer to hold active MCS certification. No certification = no grant.
• SEG eligibility. The Smart Export Guarantee for solar PV requires MCS-certified install for your electricity supplier to register you for export payments.
• Insurance + mortgage friendliness. Most home insurance and mortgage lenders treat MCS-installed systems as standard equipment; non-MCS installs sometimes trigger disclosure complications.
• Standards compliance. MCS installers follow defined installation standards (MIS 3005 for heat pumps, MIS 3002 for solar PV) and register each install on the MCS database. Failure to comply has reputational + commercial consequences for the installer.

How we rank installers

Both directories use the same ranking method:

1. Filter to MCS-certified installers approved for the relevant technology (heat pump or solar PV).
2. For heat pumps: additionally filter to BUS-registered.
3. Geo-filter by straight-line distance from the area centroid you searched. The radius widens automatically (25 km → 50 → 100 → 200 km) when installer density is low so rural postcodes don’t render an empty section.
4. Rank by a Bayesian-smoothed Google review score — installers with very few reviews are damped toward the national average so a 5★/3 doesn’t beat a 4.8★/200. Installers without a Google Business listing rank at the national average and don’t display a stars row (no fabricated stars).
5. Distance is the tie-break when scores are close.

Sponsored placement

We offer a paid “sponsored placement” option. Sponsored installers float to the top of the directory and are clearly flagged with a Sponsored badge on their card — the same Bayesian ranking applies between sponsored installers, so a 5★/3 sponsored installer still sits below a 4.8★/200 sponsored installer. Sponsored installers pay double credits per accepted lead in exchange for the placement; the homeowner journey + reviews shown are otherwise identical. See pricing for the full breakdown. Contact us if you have feedback on a specific listing.

For installers

If you’re an MCS-certified installer and your listing is missing or out of date, get in touch via /installer-signup or email installers@propertoasty.com. We update the directory monthly from the MCS register; between refreshes you can claim + update your listing directly via the installer portal.