SEAI-registered installers in Offaly
1,481 companies on SEAI’s registers are based in or serve Offaly — 58 of them are based in the county itself (register as of 8 September 2026).
By the job you want done
Attic insulation installers in Offaly
491 registered for attic insulation.
- Alex Building Services
- Annex Building Renovation Ltd
- Ardvark Insulation Ltd
- Brian Smith Heating & Plumbing Ltd
- Cleare Home Improvements & Insulation
- David Flaherty Construction LTD
- Ecotec Insulation Ltd
- Farrelly Property Holdings
Cavity wall insulation installers in Offaly
92 registered for cavity wall insulation.
Internal wall insulation installers in Offaly
469 registered for internal wall insulation.
- Alex Building Services
- Annex Building Renovation Ltd
- Brian Smith Heating & Plumbing Ltd
- David Flaherty Construction LTD
- Farrelly Property Holdings
- Finlay EcoFit Tullamore Ltd
- Gcf Investments Limited
- Hughes and Co External Insulation
External wall insulation installers in Offaly
175 registered for external wall insulation.
Window and door installers in Offaly
383 registered for windows and doors.
- Abc Glazing Specialists Ltd
- Buckley Windows & Doors
- Daingean Joinery Ltd
- Dovista Irl Ltd
- Dunne Ecofit Limited
- Eden Windoor Ltd
- Glazeright Ltd
- H&F Windows
Heat pump installers in Offaly
381 registered for heat pumps.
- Anthony Egan Heating And Plumbing
- Brian Smith Heating & Plumbing Ltd
- C & H Plumbing & Heating
- Dermot Flannery
- DW Plumbing & Heating
- EMSS
- Energy Superstore Ltd
- Finlay EcoFit Tullamore Ltd
Solar panel installers in Offaly
323 registered for solar panels.
- Mahon MultiMedia
- Ashgrove Engineering Ltd T/A Ashgrove RenewablesOne Stop Shopfrom CorkWebsite
- Bayview Contracts LtdOne Stop ShopWebsite
- Bord Gais Energy LtdOne Stop Shopfrom DublinWebsite
- Churchfield Home ServicesOne Stop Shopfrom MayoWebsite
- Home Comfort Retrofits LtdOne Stop Shopfrom KildareWebsite
- Integrate Home Energy Upgrades LimitedOne Stop Shopfrom WicklowWebsite
- OHK Energy LTDOne Stop Shopfrom MonaghanWebsite
Heating controls installers in Offaly
386 registered for heating controls.
- Brian Smith Heating & Plumbing Ltd
- C & H Plumbing & Heating
- Dermot Flannery
- DW Plumbing & Heating
- EMSS
- Energy Superstore Ltd
- Finlay EcoFit Tullamore Ltd
- JBC Plumbing & Heating Contractors Ltd
Solar hot water installers in Offaly
156 registered for solar hot water.
- Finlay EcoFit Tullamore Ltd
- Joe Dunican Plumbing And Heating Ltd
- Justin Colgan Ltd
- Activ8 EnergiesOne Stop ShopWebsite
- Ashgrove Engineering Ltd T/A Ashgrove RenewablesOne Stop Shopfrom CorkWebsite
- Aspen Eco PowerOne Stop Shopfrom LouthWebsite
- Bayview Contracts LtdOne Stop ShopWebsite
- Bord Gais Energy LtdOne Stop Shopfrom DublinWebsite
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Get quotes in OffalyListed 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.