SEAI contractor directory · Verified 4 July 2026

SEAI registered contractors, county by county

Browse SEAI-registered heat pump installers, insulation contractors, solar installers, BER assessors and One Stop Shops serving your county — or tell us the upgrade and we'll match you with up to three suitable providers.

Free for homeownersContact shared only when you request itAlways verify registration on seai.ie before works

Important: Using a contractor who is not registered with SEAI for the specific measure permanently disqualifies your grant claim. Always verify SEAI registration before agreeing to any work.

Prefer to be matched?

Tell us the upgrade — we'll find the right contractor type

Pick the work you're planning. We check your grant route first, then connect you with up to three suitable SEAI-registered providers in your county — so you're asking the right contractor for the right quote.

BER assessor

Required before nearly every SEAI grant. Start here if you don’t have a current BER.

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Heat pump installer

Air-to-water or ground source — up to €12,500 with the full SEAI bundle.

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Solar PV installer

Solar PV Grant up to €1,800. Homes built and occupied before 2021 may qualify.

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Solar water heating

Separate €1,200 grant for solar thermal hot-water systems.

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Windows & doors

New grant since March 2026. Pre-2011 homes with adequate insulation.

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Attic insulation

Up to €2,000 — usually the cheapest upgrade for the biggest BER bump.

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Cavity wall insulation

Fast 1–2 day install for homes built ~1940–2007 with a cavity wall.

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External wall insulation

Wrap the outside of the home — biggest fabric impact, higher cost.

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Heating controls

€700 grant for smart thermostats, zone controls and programmers.

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One Stop Shop (full retrofit)

One provider manages the whole retrofit from survey to grant payment.

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HomeUpgrade.ie does not approve grants. Your home is not grant-approved yet. Works must not start before SEAI written approval. You can withdraw consent at any time.

For contractors

Are you an SEAI-registered contractor?

Get pre-qualified homeowner leads matched to your county and trade. First sample lead free, then pay per lead or join as a county partner — no contracts.

See lead pricing

Official checks

Verify with SEAI before you commit

Official register links are here when you need to confirm a provider.

One Stop Shop — official SEAI register

Use SEAI's own register for the complete current list of One Stop Shop providers. HomeUpgrade.ie does not rank OSS providers.

Better Energy Homes — apply & pick a registered contractor

SEAI's HES portal is where you complete a Better Energy Homes application and select your SEAI-registered contractor for insulation, windows, heating controls, or BER work.

Find a registered heat pump installer

SEAI's heat pump grant page links to the current list of registered installers and explains the technical-assessment requirement before applying.

Find a solar PV or solar water heating installer

SEAI's solar grant page lists registered solar installers for both Solar PV and Solar Water Heating grants.

Find a windows & doors installer

Apply on SEAI's HES portal to start a Windows & Doors Grant application and pick a registered installer. Adequate attic and wall insulation must already be in place to qualify.

Find a BER assessor

Search the national register of SEAI-approved BER assessors who can rate your home before and after retrofit works.

Transparency

How we're funded

HomeUpgrade.ie is free for homeowners. We may earn referral or introduction fees from SEAI-registered installers, retrofit providers or advisors when a homeowner explicitly asks to be contacted. Paid relationships do not change grant rules, estimates or editorial guidance; always verify contractor registration and final grant eligibility with SEAI.

SEAI registered contractors — FAQ

Verified 4 July 2026. Always confirm a contractor's current SEAI registration at seai.ie before agreeing to works.

How do I find an SEAI-registered contractor?▾

SEAI publishes a register of contractors approved for each grant measure (insulation, heat pump, Solar PV, windows & doors, etc.). You can search the official SEAI contractor register at seai.ie. HomeUpgrade.ie helps you understand which contractor type fits your home and route, and connects you with suitable SEAI-registered installers if you ask us to.

Are HomeUpgrade.ie contractors guaranteed to be SEAI-registered?▾

HomeUpgrade.ie summarises publicly available contractor data and only routes enquiries to providers who indicate they are SEAI-registered for the relevant measure. We are independent of SEAI and we do not certify contractors — always verify a contractor's current SEAI registration directly at seai.ie before agreeing to any works.

Do all SEAI grants require a registered contractor?▾

Yes. SEAI individual grants (Better Energy Homes), the One Stop Shop, and Solar PV all require works to be carried out by a contractor registered with SEAI for that specific measure. Using a contractor who is not registered for the measure permanently disqualifies your grant for that upgrade. The Warmer Homes Scheme is different — SEAI appoints the contractor for you.

Can I get more than one quote from SEAI-registered contractors?▾

You should. SEAI itself recommends getting at least three quotes before choosing a contractor. HomeUpgrade.ie can connect you with up to three suitable SEAI-registered providers in your county for a pre-application quote — works must not start until SEAI has issued written approval.

Where can I check if a contractor is SEAI-registered?▾

The official SEAI contractor register is on seai.ie under Home Energy Grants → Find a Registered Contractor. Always check the contractor is registered for the specific grant measure you are claiming (e.g. heat pump, attic insulation, solar PV) — registration for one measure does not cover others.