Do I have to use one of these companies to get the grant?

Yes. SEAI only pays a grant on work done by a company on its register, and the company claims it on your behalf. Work done by anyone else is not covered, however good it is.

How many quotes should I get in Offaly?

Three, from companies registered for the same job, and ask each for a written breakdown. Quotes for the same house often differ by thousands because they include different work, not because one is dearer.

Is this list in any order of merit?

No. Companies based in Offaly come first, then the ones that travel to it, then One Stop Shops, then alphabetical. Being on the register means the paperwork is in order, not that the work is good.

Solar hot water installers in Offaly

156 companies on the SEAI register are based in or serve Offaly for solar hot water (register as of 8 September 2026).

Based in Offaly

3 of them. Sorted by what they are registered for, then by name — this is not an order of merit.

Finlay EcoFit Tullamore Ltd
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot water
Based in Offaly · serves Dublin, Leinster, Munster and Connacht · SEAI no. 12532
Based in Offaly.
Joe Dunican Plumbing And Heating Ltd
Attic insulationHeat pumpHeating controlsInternal wall insulationSolar hot water
Based in Offaly · serves Dublin, Leinster, Munster and Connacht · SEAI no. 14712
Based in Offaly.
Justin Colgan Ltd
Heat pumpSolar hot water
Based in Offaly · serves Leinster · SEAI no. 16699
Based in Offaly.

Also cover Offaly from elsewhere (153)

These told SEAI they cover the province Offaly is in, or listed it among the counties they serve. Ask how far they travel before you go any further. Names only here; each one's full register row is on its own county page. OSS = One Stop Shop.

Activ8 Energies (OSS) · Ashgrove Engineering Ltd T/A Ashgrove Renewables (OSS) · Aspen Eco Power (OSS) · Bayview Contracts Ltd (OSS) · Bord Gais Energy Ltd (OSS) · Breffni Insulation Ltd (OSS) · CBM Munster Construction T/A Home Energy Retrofits (OSS) · Churchfield Home Services (OSS) · Cooper Insulation Ltd. (OSS) · Electric Ireland Superhomes (OSS) · Energlaze Home Energy Upgrades (OSS) · Energyfix (OSS) · Envirobead Ltd. (OSS) · Greenwatt Ltd (OSS) · Home Comfort Retrofits Ltd (OSS) · House 2 Home Retrofit Ltd (OSS) · Integrate Home Energy Upgrades Limited (OSS) · Kingdom Installation Ltd (OSS) · Kingspan Insulation Ltd (OSS) · Kore Retrofit Ltd (OSS) · Leetherm Project Management Ltd (OSS) · Lough Projects (OSS) · Moston Construction Ltd (OSS) · OHK Energy LTD (OSS) · Retrofit Design Ltd (OSS) · Retrofit Energy Ireland (OSS) · SSE Airtricity Energy Services Ltd (OSS) · WiEnergy (OSS) · ACG Heating & Plumbing Ltd · Allbrite Heatpump Specialists Ltd · Alternative Energy Ireland AEI · Alternative Heating & Cooling Ltd · Andy Gahan Plumbing & Heating · Anthony Brady Plumbing Limited · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · Anthony Ryan · Anthony Ryan Plumbing Limited · Arch Plumbing & Heating · Aries Mechanical Contractors Ltd · B Earley Plumbing & Maintenance Ltd · B-Warm Ltd · Ba Plumbing And Heating · Ballydowd Homes Ltd · Ballyhogan Plumbing Services Ltd · Bayside Heating Ltd · bightheplumber Ltd · BPM Heat · Breen Heating and Plumbing Ltd · Brendan Butler Plumbing Ltd · Brian Carrick Heating And Plumbing · Brian O'Toole Heating & Plumbing Services Ltd · Broomhall Estates · Cammogue Engineering Limited · CGP · Ciocan Construction Ltd · Cloverhill Renewables Ltd · Cok Electrical & Renewables Ltd · Cowan Heating and Plumbing LTD · Craft Heating & Plumbing Services · CSC Engineering Ltd · Cunningham Mechanical Services Ltd · D Harris Heating and Plumbing · Dan Fenlon Heating & Plumbing Ltd · David Coleman Renewables Ltd. T/A DC Renewables · Decana Mechanical T/A Curran Heating & Plumbing · DT Plumbing & Heating Ltd t/a M3 Plumbing &Heating · Ecoflex Energy Ltd · Ecoliving LTD · Ecoscene · Efficient Renewables Ltd · Eirgreen · Energy Efficient Mechanical Solutions Ltd · Energy Saving Technologies Ltd T/A Energlaze · Energywise Savings Ireland Ltd · Fingal Renewables · Flynn Heating Services · FND Heating Ltd · FP Engineering and Construction Ltd · Frank Groome T/A Speedy Plumbing & Heating Service · Frank Moore Ltd · GB Plumbing & Heating · Gilroy Heating Services Ltd · Grange Mechanical Limited · Green Energy Heating Solutions Limited · Greentherm Ltd. · Hagim Gas Ltd · Heat Doc Ltd · Heat Service Installation & Design Ltd. · Heat Tech Solutions Ltd · Hometherm Insulation Ltd · Hydrothermsolutions · J & D O'Brien Ltd · James Donnelly Eco Heating Ltd · James O Connor Plumbing & Heating · Jason Fahy Heating · JFK Plumbing and Heating Ltd · JJS Plumbing & Heating Limited · Joe Hegarty Plumbing Ltd · John Egan Heating And Plumbing · Justin Hopkins Heating And Plumbing Ltd · K.Fitzpatrick plumbing & heating · Keith Nevin Plumbing & Heating Services Ltd · Kieran Fitzpatrick Plumbing & Heating Ltd · Larkfield Plumbing Contractors Ltd · Leinster Heatpumps · LVP Renewables Ltd · M & C Hybrid Energy Ltd · Marron Activ 8 Energies Ltd · Maynooth Plumbing And Heating Ltd · Mc Cormack Plumbing & Construction Ltd · Mc Elligott Heating & Plumbing Limited · McManamon Mechanical Services Ltd · Michael J. O'Neill Heating & Plumbing · MMCM Plumbing Services · Monsoon Plumbing & Heating · Mullagh Heating And Plumbing Ltd · New Millennium Heating and Plumbing · Newbridge Heating Centre Ltd · NGS Mechanical Services Limited · Niall Smith Energy Renewables Ltd · Nigel Dungan Plumbing & Heating · NZEB Technologies Ltd · O Brien Bros Plumbing & Heating Ltd · ONG Heating and Plumbing Ltd · P.F Plumbing Heating & Maintenance Ltd · Paddy Brady Heating and Plumbing Ltd · Pat Caulfield Plumbing & Heating · Pat Corrigan Plumbing & Heating · Patrick Dempsey · Patrick F. O'Connor Limited · Patrick Kavanagh Plumbing & Heating Services · Patrick Moore Renewables · Paul McGrath T/A Venturi Heat Services · PJ Firman & Co Ltd · PMK Mechanical Ltd. · R.P. Plumbing And Heating · Ramor Renewable Heating and Plumbing · Rem Heat Ltd · Royal Renewables Ltd · RTS Heating & Cooling Services LTD · Shane McKenna Plumbing & Heating · Solaregy T/A Sola · Solaris Green Energy · South Dublin Heating & Plumbing Ltd · Stephen Cullen · Stephen H Heating & Plumbing Ltd · TAF Plumbing Ltd · Thompson Plumbing and Heating · TM Plumbing & Heating Ltd · Vinnie Johnson Plumbing & Heating Ltd · Walsh & Sheehan Ltd · White Premier Construction Ltd · Wolfe Plumbing & Heating Services Ltd

What it costs, and what the grant pays

The grant for a semi-detached house is €1,200. These are national figures, not Offaly ones — SEAI does not publish prices by county.

What it costs on a home like yours, and what you are left paying

Before you sign

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.

How the application works

Ask up to five of them

Fill in one form, tick who you want to hear from, and we pass your details to those companies and nobody else. It costs nothing and you are under no obligation.

Get solar hot water quotes in Offaly

Common questions

Do I have to use one of these companies to get the grant?: Yes. SEAI only pays a grant on work done by a company on its register, and the company claims it on your behalf. Work done by anyone else is not covered, however good it is.
How many quotes should I get in Offaly?: Three, from companies registered for the same job, and ask each for a written breakdown. Quotes for the same house often differ by thousands because they include different work, not because one is dearer.
Is this list in any order of merit?: No. Companies based in Offaly come first, then the ones that travel to it, then One Stop Shops, then alphabetical. Being on the register means the paperwork is in order, not that the work is good.

Other work in Offaly

Listed 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.