Installers · Limerick · SEAI registers read 25 Sep 2026
1,134 SEAI-registered contractors say they work in Limerick
1,134 companies on SEAI’s registers say they work in Limerick (read 25 September 2026). 81 are based in the county, 1,029 cover it from elsewhere and 24 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 twin-gable bungalow in east of Doon, Co. Limerick. Apartments built 1990–2004 are the commonest home sold or let in Limerick.
Twin gable bungalow to east of Doon village · Neil Theasby · CC BY-SA 2.0
1,134
Companies that say they work here
SEAI registers · read 25 Sep 2026
Published figure13th of 26 for companies
81
Based in Limerick
The address on the register
Published figure10th of 26 for firms based in the county
24
One Stop Shops that list it
SEAI One Stop Shop register
Published figure13th of 26 for One Stop Shops
278
Heat pump installers who say they work here
SEAI home energy register · read 25 Sep 2026
Published figure14th 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 Limerick
- Next questionShould you manage it yourself or use a One Stop Shop?
Who says they work in Limerick, by job
Based in Limerick 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 Limerick
343 registered for attic insulation · 16 based in Limerick
- Aerofill Insulation
- Alc Construction Limited
- Behan Builders Shanagolden Ltd.
- Con Horgan & Sons Ltd T/A Horgan Renewables
- Connolly Building & Renovations Ltd
- Cosyfill Insulation
- Eugene Brouder
- Fmk Developments
Know the jobs before you call a firm in Limerick
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 Limerick
87 registered for cavity wall insulation · 3 based in Limerick
- Cosyfill Insulation
- OG Insulation Limited
- Spreadwell Construction Ltd
- Ashgrove Engineering Ltd T/A Ashgrove RenewablesOne Stop Shopfrom CorkWebsite
- 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 Limerick
323 registered for internal wall insulation · 19 based in Limerick
- Aerofill Insulation
- Alc Construction Limited
- Behan Builders Shanagolden Ltd.
- Caherass Plastering Ltd
- Con Horgan & Sons Ltd T/A Horgan Renewables
- Connolly Building & Renovations Ltd
- Cosyfill Insulation
- Eugene Brouder
External wall insulation installers in Limerick
131 registered for external wall insulation · 7 based in Limerick
- Aerofill Insulation
- Cosyfill Insulation
- Madden Developments Ltd
- Novin Consultants Ltd
- RMC Ecobuild Ltd
- Spreadwell Construction Ltd
- The Best Insulation
- Ashgrove Engineering Ltd T/A Ashgrove RenewablesOne Stop Shopfrom CorkWebsite
Window and door installers in Limerick
275 registered for windows and doors · 33 based in Limerick
- Ak Window Systems Ltd
- Aocwindows
- Atlas Windows And Doors Repairs
- Bluestone Bridge Ltd Ta Hybrid Costello Windows
- D And J Glazing
- Enerfit Ltd
- Foley Windows & Doors Ltd
- Garry O'Malley Windows
Heat pump installers in Limerick
278 registered for heat pumps · 20 based in Limerick
- Boiler Tech
- Codjack T/A Professional Plumbing Solutions
- Con Horgan & Sons Ltd T/A Horgan Renewables
- David Gardiner Plumbing & Heating Services
- Heat My Home
- Heat Tech Heating & Plumbing Ltd
- John Mulvihill Plumbing & Heating
- Leahy Mechanical Contractors Ltd
Solar panel installers in Limerick
328 registered for solar panels · 6 based in Limerick
Heating controls installers in Limerick
269 registered for heating controls · 20 based in Limerick
- Boiler Tech
- Carberry Heating & Plumbing Ltd
- Codjack T/A Professional Plumbing Solutions
- David Gardiner Plumbing & Heating Services
- Heat My Home
- Heat Tech Heating & Plumbing Ltd
- John Mulvihill Plumbing & Heating
- John Warren
Solar hot water installers in Limerick
117 registered for solar hot water · 6 based in Limerick
- Codjack T/A Professional Plumbing Solutions
- David Gardiner Plumbing & Heating Services
- Heat Tech Heating & Plumbing Ltd
- Midwest Eco Energy
- O Brien Bros Plumbing & Heating Ltd
- Paul Corcoran Plumbing & Heating Services
- Ashgrove Engineering Ltd T/A Ashgrove RenewablesOne Stop Shopfrom CorkWebsite
- Bayview Contracts LtdOne Stop ShopWebsite
How Limerick compares with the other counties
Each job's count against the median county's. Published figure
278 heat pump installers say they work in Limerick; the median county has 279
Limerick is 14th of 26 for heat pumps and 13th for companies of every kind. 81 are based here, 10th of 26.
Each bar is Limerick'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 | Limerick | Median county | Rank of 26 |
|---|---|---|---|
| Heat pumps | 278 | 279 | 14th |
| Attic insulation | 343 | 343 | 13th |
| Cavity wall insulation | 87 | 87 | 12th |
| Internal wall insulation | 323 | 323 | 13th |
| External wall insulation | 131 | 132 | 14th |
| Windows and doors | 275 | 276 | 14th |
| Solar panels | 328 | 319 | 5th |
| One Stop Shops | 24 | 24 | 13th |
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