Check a heat pump installer before you renovate
What to check before you pick a contractor for a heat pump, and what the region and the premiums ask.
8.787 active companies have a heat pump as their main activity.
KBO, enterprises whose main activity falls under 43.222, 43.223, 43.213 · 12 November 2026 · All companies in Installatie van verwarming, klimaatregeling, koeling en ventilatie aangedreven door elektriciteit
Professional competence
In Wallonia and Brussels, whoever does a heat pump needs the professional competence for central heating, air conditioning, gas and sanitary, and electrotechnics. Flanders has not required it since 2019.
Premiums
Flanders: pick an installer with a RESCert certificate. Wallonia: access to the profession for heating and, for an electric heat pump, for electrotechnical activities.
By municipality
What the premiums ask of the contractor
- Flanders
- Flanders (Mijn VerbouwPremie): most work only counts when a contractor does it. The invoice shows the contractor’s name, address and VAT number and Belgian VAT, and the contractor fills in a certificate with their enterprise number. No professional competence is required; a heat pump is installed by an installer with a RESCert certificate. The conditions
- Wallonia
- Wallonia (primes Habitation): the contractor is registered in the KBO and has access to the profession for the work: roofing and waterproofing for the roof, structural work for walls, joinery and glazing for windows, central heating, air conditioning, gas and sanitary for heating. An electric heat pump also needs electrotechnical activities. The conditions
- Brussels
- Brussels (Renolution): the contractor is registered in the KBO, VAT registered and has access to the profession where the work needs it. Invoices from 2025 and 2026 don’t qualify for a premium for now; the competence rule still applies. The conditions
For 6% VAT on renovation (a home over ten years old), a VAT-registered contractor invoices you directly.
Firmatlas gives no legal advice. Check your premium’s conditions before you sign.
What no register shows
- Ask for a written quote with name, address and enterprise number, and compare a few.
- Don’t pay a large deposit. Agree on payment in stages as the work progresses.
- Ask for the ten-year liability insurance certificate when the work needs an architect.
- Ask for references of work nearby and go and look.
- Check that the enterprise number on the quote is this company’s.
Questions about checking a contractor
What professional competence does a heat pump need?
In Wallonia and Brussels, whoever does a heat pump needs the professional competence for central heating, air conditioning, gas and sanitary, and electrotechnics. Flanders has not required it since 2019.
What does the premium for a heat pump ask of the contractor?
Flanders: pick an installer with a RESCert certificate. Wallonia: access to the profession for heating and, for an electric heat pump, for electrotechnical activities.
How do I check a heat pump installer?
Look the company up above by name or enterprise number and enter the postcode of the work. You see whether it is active, whether its VAT number is active, whether it is not bankrupt and whether it holds the professional competence for the work.
By type of work: Roofer · Structural contractor · Plasterer · Tiler · Joiner · Painter · Heating engineer and plumber · Electrician · Insulation company · General contractor · Demolition company