SEAI-registered installers in Donegal
683 companies on SEAI’s registers are based in or serve Donegal — 143 of them are based in the county itself (register as of 8 September 2026).
By the job you want done
Attic insulation installers in Donegal
211 registered for attic insulation.
- A1 Plumbing & Heating
- Abhaile Carpentry And Construction Ltd
- AC Insulation
- Anthony Quinn Construction Ltd
- B. Donaghey & Sons
- BCBAL Ltd T/A McGee Insulation
- Bio Insulate Ltd
- Braecon Construction Ltd
Cavity wall insulation installers in Donegal
49 registered for cavity wall insulation.
- AC Insulation
- BCBAL Ltd T/A McGee Insulation
- Bio Insulate Ltd
- Ecotech Contracts IRI Ltd
- Gallen Insulation Ltd
- Premier Solutions NW Ltd
- Tirconaill Contracts Ltd T/A Mc Taggart Insulation
- Ashgrove Engineering Ltd T/A Ashgrove RenewablesOne Stop Shopfrom CorkWebsite
Internal wall insulation installers in Donegal
195 registered for internal wall insulation.
- Abhaile Carpentry And Construction Ltd
- AC Insulation
- Anthony Quinn Construction Ltd
- B. Donaghey & Sons
- BCBAL Ltd T/A McGee Insulation
- Braecon Construction Ltd
- Brendan Mcgrenaghan Construction
- Breslin Construction And Renovation Ltd
External wall insulation installers in Donegal
73 registered for external wall insulation.
- B. Donaghey & Sons
- BCBAL Ltd T/A McGee Insulation
- Carrickmaquigley Construction Ltd
- Derryveagh Contracts Ltd
- DMT Renewables Ltd
- Duey Brothers Ltd
- Insulate Ireland
- Johnathan Timoney T/A Rendpro Ltd
Window and door installers in Donegal
135 registered for windows and doors.
- Aiden Mcguinness & Son Ltd
- Anchor Windows
- B. Donaghey & Sons
- C.G. Windows Ltd
- Cmg Windows
- Coastal Windows & Doors
- Errigal Windows & Glazing
- Frames Direct Uc
Heat pump installers in Donegal
137 registered for heat pumps.
- A1 Plumbing & Heating
- Adrian Sweeney Plumbing & Heating Contractors
- Bernard Mc Elhinney Plumbing & Heating Contractor
- Carnamoyle Renewables Ltd
- CTI Teo T/A Gallagher Heating Systems
- Daigon Ltd
- Damien Barron
- DMT Renewables Ltd
Solar panel installers in Donegal
285 registered for solar panels.
- Efficient Renewables Ltd
- Ferm Eng Ltd
- Grants Electrical Services LTD
- Kelly Electrical Services Ltd
- Martin Diver Electrical LTD
- McCaffrey Mechanical Services Ltd.
- Paul Gallagher
- Penrose Electrical Ltd
Heating controls installers in Donegal
136 registered for heating controls.
- A1 Plumbing & Heating
- Adrian Sweeney Plumbing & Heating Contractors
- Apex Renewables
- Bernard Mc Elhinney Plumbing & Heating Contractor
- CTI Teo T/A Gallagher Heating Systems
- Daask Build Ltd
- DMT Renewables Ltd
- Efficient Renewables Ltd
Solar hot water installers in Donegal
59 registered for solar hot water.
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Get quotes in DonegalListed on SEAI’s public registers on 8 September 2026. Being registered is not an endorsement by SEAI or by us. Check the current register on seai.ie before you sign anything. Not affiliated with SEAI.