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 Louth?

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 Louth 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 Louth

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

Based in Louth

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

Aspen Eco PowerOne Stop Shop
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and door
Based in Louth · serves Dublin and Leinster · SEAI no. 19984 · Website
Based in Louth.
Breen Heating and Plumbing Ltd
Attic insulationHeat pumpHeating controlsInternal wall insulationSolar hot water
Based in Louth · serves Dublin, Leinster and Ulster · SEAI no. 10347
Based in Louth.
CGP
Heating controlsSolar hot water
Based in Louth · serves Leinster and Ulster · SEAI no. 10057
Based in Louth.
CSC Engineering Ltd
Heat pumpHeating controlsSolar hot water
Based in Louth · serves Dublin and Leinster · SEAI no. 12539
Based in Louth.
Gilroy Heating Services Ltd
Heat pumpHeating controlsSolar hot water
Based in Louth · serves Dublin, Leinster, Munster and Ulster · SEAI no. 16652
Based in Louth.
Hagim Gas Ltd
Heat pumpHeating controlsSolar hot water
Based in Louth · serves Leinster and Ulster · SEAI no. 10036
Based in Louth.
Jason Fahy Heating
Heat pumpHeating controlsSolar hot waterSolar panel
Nationwide · SEAI no. 15829
Based in Louth.
NZEB Technologies Ltd
Heat pumpHeating controlsSolar hot waterSolar panel
Nationwide · SEAI no. 15238
Based in Louth.
Shane McKenna Plumbing & Heating
Heat pumpHeating controlsSolar hot water
Based in Louth · serves Dublin and Leinster · SEAI no. 17175
Based in Louth.
Solaris Green Energy
Attic insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterSolar panel
Nationwide · SEAI no. 15445
Based in Louth.
Vinnie Johnson Plumbing & Heating Ltd
Heat pumpHeating controlsSolar hot water
Based in Louth · serves Dublin and Leinster · SEAI no. 11184
Based in Louth.

Also cover Louth from elsewhere (143)

These told SEAI they cover the province Louth 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) · Bayview Contracts Ltd (OSS) · Bord Gais Energy Ltd (OSS) · Breffni Insulation Ltd (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) · Larkrock (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) · 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 · Brendan Butler Plumbing Ltd · Brian Carrick Heating And Plumbing · Brian O'Toole Heating & Plumbing Services Ltd · Broomhall Estates · Cammogue Engineering Limited · Ciocan Construction Ltd · Cloverhill Renewables Ltd · Cok Electrical & Renewables Ltd · Cowan Heating and Plumbing LTD · Craft Heating & Plumbing Services · 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 · Finlay EcoFit Tullamore Ltd · 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 · Grange Mechanical Limited · Green Energy Heating Solutions Limited · Greentherm 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 · JFK Plumbing and Heating Ltd · JJS Plumbing & Heating Limited · Joe Dunican Plumbing And Heating Ltd · Joe Hegarty Plumbing Ltd · John Egan Heating And Plumbing · Justin Colgan Ltd · 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 · 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 · Solaregy T/A Sola · South Dublin Heating & Plumbing Ltd · Stephen Cullen · Stephen H Heating & Plumbing Ltd · TAF Plumbing Ltd · Thompson Plumbing and Heating · TM 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 Louth 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 Louth

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 Louth?: 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 Louth 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 Louth

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.