Installers · Offaly · SEAI registers read 25 Sep 2026
1,461 SEAI-registered contractors say they work in Offaly
1,461 companies on SEAI’s registers say they work in Offaly (read 25 September 2026). 61 are based in the county, 1,372 cover it from elsewhere and 28 are One Stop Shops from elsewhere. Firms often tick a whole province, so the count is regional. Registration is a fact about paperwork, not a review of their work.
A cut-stone cottage in Geashill, Co. Offaly. Semi-detached houses built 1990–2004 are the commonest home sold or let in Offaly.
Semi-detached cottage in Geashill, County Offaly · A.-K. D. · CC0 1.0 (public domain dedication)
1,461
Companies that say they work here
SEAI registers · read 25 Sep 2026
Published figure4th of 26 for companies
61
Based in Offaly
The address on the register
Published figure13th of 26 for firms based in the county
28
One Stop Shops that list it
SEAI One Stop Shop register
Published figure3rd of 26 for One Stop Shops
376
Heat pump installers who say they work here
SEAI home energy register · read 25 Sep 2026
Published figure5th of 26 for heat pumps
Updated · registers read 25 Sep 2026 · How we know · Corrections
Where this sits · the grant steps
Every SEAI grant runs the same six steps. SEAI won't pay for work that starts before it approves.
- Assessa BER, or a home energy assessment
- Applyonline, before any work starts
- ApproveSEAI's offer lasts 8 months
- Worksby an SEAI-registered contractor
- Claimpost-works BER and forms
- Paid4–6 weeks after complete paperwork
- The idea behind itApply, approve, works and payment are different steps
- You are hereInstallers in Offaly
- Next questionShould you manage it yourself or use a One Stop Shop?
Who says they work in Offaly, by job
Based in Offaly first, then firms that travel to it, then One Stop Shops, then by name. Not an order of merit. Published figure
Attic insulation installers in Offaly
483 registered for attic insulation · 21 based in Offaly
- Alex Building Services
- AM Carpentry Ltd
- Annex Building Renovation Ltd
- Ardvark Insulation Ltd
- Brian Smith Heating & Plumbing Ltd
- Cleare Home Improvements & Insulation
- David Flaherty Construction LTD
- Ecotec Insulation Ltd
Know the jobs before you call a firm in Offaly
See your grants, and what you’d pay.
About 10 seconds. See your numbers first, then get quotes if you want them.
Cavity wall insulation installers in Offaly
91 registered for cavity wall insulation · 5 based in Offaly
Internal wall insulation installers in Offaly
459 registered for internal wall insulation · 20 based in Offaly
- Alex Building Services
- Annex Building Renovation Ltd
- Brian Smith Heating & Plumbing Ltd
- David Flaherty Construction LTD
- Finlay EcoFit Tullamore Ltd
- Gcf Investments Limited
- Hughes and Co External Insulation
- Joe Dunican Plumbing And Heating Ltd
External wall insulation installers in Offaly
171 registered for external wall insulation · 6 based in Offaly
Window and door installers in Offaly
382 registered for windows and doors · 21 based in Offaly
- Abc Glazing Specialists Ltd
- Buckley Windows & Doors
- Daingean Joinery Ltd
- Dovista Irl Ltd
- Dunne Ecofit Limited
- Eden Windoor Ltd
- Embassy Home Products Ltd Ta Acorn Windows & Doors
- Glazeright Ltd
Heat pump installers in Offaly
376 registered for heat pumps · 17 based in Offaly
- Anthony Egan Heating And Plumbing
- Brian Smith Heating & Plumbing Ltd
- Brian Stones Heating & Plumbing ta SCB P&H Ltd
- C & H Plumbing & Heating
- Dermot Flannery
- DW Plumbing & Heating
- EMSS
- Energy Superstore Ltd
Solar panel installers in Offaly
323 registered for solar panels · 1 based in Offaly
- 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
378 registered for heating controls · 15 based in Offaly
- Brian Smith Heating & Plumbing Ltd
- Brian Stones Heating & Plumbing ta SCB P&H Ltd
- C & H Plumbing & Heating
- Dermot Flannery
- DW Plumbing & Heating
- EMSS
- Energy Superstore Ltd
- Finlay EcoFit Tullamore Ltd
Solar hot water installers in Offaly
153 registered for solar hot water · 4 based in Offaly
How Offaly compares with the other counties
Each job's count against the median county's. Published figure
376 heat pump installers say they work in Offaly; the median county has 279
Offaly is 5th of 26 for heat pumps and 4th for companies of every kind. 61 are based here, 13th of 26.
Each bar is Offaly's count for that job, on a scale to the county with the most; the tick is the median county. Many firms tick a whole province, so counts move in regional steps, and neighbouring counties often share a step. A count is choice, not capacity.
Sources: SEAI home energy, One Stop Shop and solar registers, read 25 Sep 2026
The numbers
| Job | Offaly | Median county | Rank of 26 |
|---|---|---|---|
| Heat pumps | 376 | 279 | 5th |
| Attic insulation | 483 | 343 | 5th |
| Cavity wall insulation | 91 | 87 | 2nd |
| Internal wall insulation | 459 | 323 | 5th |
| External wall insulation | 171 | 132 | 4th |
| Windows and doors | 382 | 276 | 4th |
| Solar panels | 323 | 319 | 8th |
| One Stop Shops | 28 | 24 | 3rd |
Before you sign
Four things SEAI tells homeowners to do.
- Wait for your grant approval email before any work starts. SEAI does not pay for work that began before it was approved.
- Get at least three quotes, and check each one covers the same job. The cheapest quote is often the one that leaves something out.
- Check the company is on the register on the day you sign. Companies join and leave it, and this page is a copy taken on one day.
- Get it in writing: what is being done, what it costs, when it starts and when it is finished.
Listed on SEAI’s public registers on 25 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. On this list? Get homeowner plans to quote for
See your grants and what you’d pay
Four questions about your home, then your numbers. Get quotes from registered contractors if you want them.
Updated · registers read 25 Sep 2026 · How we know · Corrections