Installers · Carlow · SEAI registers read 25 Sep 2026
1,457 SEAI-registered contractors say they work in Carlow
1,457 companies on SEAI’s registers say they work in Carlow (read 25 September 2026). 21 are based in the county, 1,408 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.
Semi-detached houses round a green in The Park View, near Naas, Co. Kildare, not in Carlow. Semi-detached houses built 1990–2004 are the commonest home sold or let in Carlow. We don't have a licensed photo of one taken in Carlow yet.
1,457
Companies that say they work here
SEAI registers · read 25 Sep 2026
Published figure8th of 26 for companies
21
Based in Carlow
The address on the register
Published figure24th 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 Carlow
- Next questionShould you manage it yourself or use a One Stop Shop?
Who says they work in Carlow, by job
Based in Carlow 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 Carlow
483 registered for attic insulation · 6 based in Carlow
- Carlow Insulation Solutions
- James Phelan Construction & Carpentry Ltd
- MG Mealey Building Contractors Ltd
- Michael Phelan Oil & Gas Boiler Services
- Monarch Windows & Construction Limited
- Wallace Contracting Ltd
- Activ8 EnergiesOne Stop ShopWebsite
- Ashgrove Engineering Ltd T/A Ashgrove RenewablesOne Stop Shopfrom CorkWebsite
Know the jobs before you call a firm in Carlow
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 Carlow
91 registered for cavity wall insulation · 1 based in Carlow
- Carlow Insulation Solutions
- 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
- Breffni Insulation LtdOne Stop Shopfrom CavanWebsite
- CBM Munster Construction T/A Home Energy RetrofitsOne Stop ShopWebsite
Internal wall insulation installers in Carlow
459 registered for internal wall insulation · 5 based in Carlow
- Carlow Insulation Solutions
- James Phelan Construction & Carpentry Ltd
- MG Mealey Building Contractors Ltd
- Monarch Windows & Construction Limited
- Wallace Contracting Ltd
- Activ8 EnergiesOne Stop ShopWebsite
- Ashgrove Engineering Ltd T/A Ashgrove RenewablesOne Stop Shopfrom CorkWebsite
- Aspen Eco PowerOne Stop Shopfrom LouthWebsite
External wall insulation installers in Carlow
171 registered for external wall insulation · 1 based in Carlow
- Carlow Insulation Solutions
- 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
- Breffni Insulation LtdOne Stop Shopfrom CavanWebsite
- CBM Munster Construction T/A Home Energy RetrofitsOne Stop ShopWebsite
Window and door installers in Carlow
382 registered for windows and doors · 10 based in Carlow
- Brealey Windows & Doors Ltd
- Brennan Glazing Services Ltd
- Darren Nolan Windows And Doors
- Eco Window Concepts Limited
- Kcb Windows And Doors
- Monarch Windows & Construction Limited
- Moyle Windows Ltd
- Nolan Glass Limited
Heat pump installers in Carlow
376 registered for heat pumps · 5 based in Carlow
Solar panel installers in Carlow
319 registered for solar panels · 1 based in Carlow
- Sun Arc Solar SystemsWebsite
- 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 Carlow
378 registered for heating controls · 6 based in Carlow
Solar hot water installers in Carlow
153 registered for solar hot water · 2 based in Carlow
- Dan Fenlon Heating & Plumbing Ltd
- Paul McGrath T/A Venturi Heat Services
- 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
- Breffni Insulation LtdOne Stop Shopfrom CavanWebsite
How Carlow compares with the other counties
Each job's count against the median county's. Published figure
376 heat pump installers say they work in Carlow; the median county has 279
Carlow is 5th of 26 for heat pumps and 8th for companies of every kind. 21 are based here, 24th of 26.
Each bar is Carlow'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 | Carlow | 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 | 319 | 319 | 11th |
| 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