Installers · Mayo · SEAI registers read 25 Sep 2026
961 SEAI-registered contractors say they work in Mayo
961 companies on SEAI’s registers say they work in Mayo (read 25 September 2026). 96 are based in the county, 847 cover it from elsewhere and 18 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 detached bungalow in Dowdallshill, Co. Louth, not in Mayo. Detached houses built 1990–2004 are the commonest home sold or let in Mayo. We don't have a licensed photo of one taken in Mayo yet.
Detached bungalow at Dowdallshill · Eric Jones · CC BY-SA 2.0
961
Companies that say they work here
SEAI registers · read 25 Sep 2026
Published figure20th of 26 for companies
96
Based in Mayo
The address on the register
Published figure7th of 26 for firms based in the county
19
One Stop Shops that list it
SEAI One Stop Shop register
Published figure21st of 26 for One Stop Shops
237
Heat pump installers who say they work here
SEAI home energy register · read 25 Sep 2026
Published figure19th 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 Mayo
- Next questionShould you manage it yourself or use a One Stop Shop?
Who says they work in Mayo, by job
Based in Mayo 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 Mayo
306 registered for attic insulation · 46 based in Mayo
- Churchfield Home ServicesOne Stop ShopWebsite
- AP Building Contractors Ltd
- Beechgrove Developments Ltd
- Bluerock Property Services Limited
- Brendan Roche
- Brian Forkan Carpentry & Construction
- C S Moran Bros Builders Ltd
- Caherdun Ltd
Know the jobs before you call a firm in Mayo
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 Mayo
75 registered for cavity wall insulation · 10 based in Mayo
- Churchfield Home ServicesOne Stop ShopWebsite
- Clar ICH Ltd
- Damien Ryan Contracts Ltd
- E.C.S.C Insulation Services Ltd
- Holmes Insulation LTD
- Moran Retrofit Solutions
- Noel Holmes Construction Ltd.
- Ruane Insulation Ltd T/A Better Energy Solutions
Internal wall insulation installers in Mayo
292 registered for internal wall insulation · 49 based in Mayo
- Churchfield Home ServicesOne Stop ShopWebsite
- AP Building Contractors Ltd
- Beechgrove Developments Ltd
- Bluerock Property Services Limited
- Brendan Roche
- Brian Forkan Carpentry & Construction
- C S Moran Bros Builders Ltd
- Caherdun Ltd
External wall insulation installers in Mayo
105 registered for external wall insulation · 11 based in Mayo
- Churchfield Home ServicesOne Stop ShopWebsite
- AP Building Contractors Ltd
- Costello Insulation LTD
- Damien Ryan Contracts Ltd
- Homergy Ltd T/AComfort Solutions Retrofit
- Moran Retrofit Solutions
- Proconstruct Limited
- Rend Master Ltd
Window and door installers in Mayo
204 registered for windows and doors · 19 based in Mayo
- Churchfield Home ServicesOne Stop ShopWebsite
- Anthoy John Windows
- AP Building Contractors Ltd
- Carrabine Joinery Ltd
- Glenham Ltd
- Holmes Insulation LTD
- Homergy Ltd T/AComfort Solutions Retrofit
- Mchale Windows Ltd
Heat pump installers in Mayo
237 registered for heat pumps · 34 based in Mayo
- Churchfield Home ServicesOne Stop ShopWebsite
- Airsol Renewable Solutions Ltd
- Castlelough Corporation Ltd
- Cathal Cawley Plumbing And Heating
- Culmore Heating & Plumbing Ltd
- Derek Corcoran Heating & Plumbing
- Dika Home Maintenance
- DMC mechanical construction ltd
Solar panel installers in Mayo
310 registered for solar panels · 7 based in Mayo
Heating controls installers in Mayo
215 registered for heating controls · 24 based in Mayo
- Churchfield Home ServicesOne Stop ShopWebsite
- Castlelough Corporation Ltd
- Cathal Cawley Plumbing And Heating
- Culmore Heating & Plumbing Ltd
- Derek Corcoran Heating & Plumbing
- DMC mechanical construction ltd
- EDH Construction & Maintenance
- G. Traynor & Sons Ltd
Solar hot water installers in Mayo
90 registered for solar hot water · 10 based in Mayo
- Churchfield Home ServicesOne Stop ShopWebsite
- Airsol Renewable Solutions Ltd
- G. Traynor & Sons Ltd
- Homergy Ltd T/AComfort Solutions Retrofit
- James Heneghan Electrical Plumbing And Heating
- Joe Gavin Ltd
- Joseph Sheridan
- Kevin Durkin Heating And Plumbing Services
How Mayo compares with the other counties
Each job's count against the median county's. Published figure
237 heat pump installers say they work in Mayo; the median county has 279
Mayo is 19th of 26 for heat pumps and 20th for companies of every kind. 96 are based here, 7th of 26.
Each bar is Mayo'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 | Mayo | Median county | Rank of 26 |
|---|---|---|---|
| Heat pumps | 237 | 279 | 19th |
| Attic insulation | 306 | 343 | 19th |
| Cavity wall insulation | 75 | 87 | 19th |
| Internal wall insulation | 292 | 323 | 19th |
| External wall insulation | 105 | 132 | 19th |
| Windows and doors | 204 | 276 | 19th |
| Solar panels | 310 | 319 | 16th |
| One Stop Shops | 19 | 24 | 21st |
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