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 Waterford?

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 Waterford 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 Waterford

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

Based in Waterford

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

Andy Gahan Plumbing & Heating
Heat pumpHeating controlsSolar hot water
Based in Waterford · serves Leinster and Munster · SEAI no. 16218
Based in Waterford.
B Ryan Plumbing Services Ltd
Heat pumpSolar hot water
Based in Waterford · serves Munster · SEAI no. 13520
Based in Waterford.
Ger Feeney Heating & Plumbing
Heat pumpHeating controlsSolar hot water
Based in Waterford · serves Munster · SEAI no. 11683
Based in Waterford.
RTS Heating & Cooling Services LTD
Heat pumpHeating controlsSolar hot water
Based in Waterford · serves Dublin, Leinster, Munster and Connacht · SEAI no. 14550
Based in Waterford.
South Mark Plumbing
Heat pumpHeating controlsSolar hot water
Based in Waterford · serves Munster · SEAI no. 16436
Based in Waterford.
W&R Walsh Plumbing Contractors Ltd
Heat pumpHeating controlsSolar hot water
Based in Waterford · serves Munster · SEAI no. 10597
Based in Waterford.
Walsh & Sheehan Ltd
Heat pumpHeating controlsSolar hot water
Based in Waterford · serves Leinster and Munster · SEAI no. 10846
Based in Waterford.

Also cover Waterford from elsewhere (113)

These told SEAI they cover the province Waterford 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.

Ashgrove Engineering Ltd T/A Ashgrove Renewables (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) · Electric Ireland Superhomes (OSS) · Energlaze Home Energy Upgrades (OSS) · Energywise Ireland (OSS) · Envirobead Ltd. (OSS) · Greenwatt Ltd (OSS) · House 2 Home Retrofit Ltd (OSS) · Kilgobbin Castle Holdings Ltd t/a Insulex (OSS) · Kingdom Installation Ltd (OSS) · Kingspan Insulation Ltd (OSS) · Kore Retrofit Ltd (OSS) · Leetherm Project Management Ltd (OSS) · Moston Construction Ltd (OSS) · Munster External Wall Insulation T/A SE Systems (OSS) · OHK Energy LTD (OSS) · Retrofit Design Ltd (OSS) · Retrofit Energy Ireland (OSS) · SSE Airtricity Energy Services Ltd (OSS) · WiEnergy (OSS) · Alan Corry Heating & Plumbing · Allbrite Heatpump Specialists Ltd · Alternative Heating & Cooling Ltd · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · AV Plumbing Ltd. · Ballyhogan Plumbing Services Ltd · Brendan Butler Plumbing Ltd · Bridge Plumbing · Burconn · CA Energy Ltd · Cammogue Engineering Limited · Charles Mc Carthy Plumbing Ltd. · Christopher Doona Heating & Plumbing Contractor · Ciocan Construction Ltd · Clever Energy Solutions Ltd · Cloverhill Renewables Ltd · Codjack T/A Professional Plumbing Solutions · Cok Electrical & Renewables Ltd · Crowe Heating and Plumbing Ltd · David Coleman Renewables Ltd. T/A DC Renewables · David Gardiner Plumbing & Heating Services · Declan O'Connell · Donal Broderick Plumbing & Heating Ltd · Donal Dwyer Heating + Plumbing · East Cork Heating & Plumbing Services Ltd · Ecoflex Energy Ltd · Efficient Renewables Ltd · Eirgreen · Energy Saving Technologies Ltd T/A Energlaze · Energywise Savings Ireland Ltd · Falvey Plumbing & Heating Services Ltd · Finlay EcoFit Tullamore Ltd · Fitzpatrick Plumbing & Heating Contractors Ltd · Flowstar Plumbing & Heating Ltd · FND Heating Ltd · Free-Flo Heating + Gas Services Ltd · Gilroy Heating Services Ltd · Glanabbey Ltd · Glenview Heating Ltd · Greentech Renewable Heating & Plumbing Limited · Greentherm Ltd. · Heat Doc Ltd · Heat Service Installation & Design Ltd. · Heat Tech Heating & Plumbing Ltd · Heat Tech Solutions Ltd · Houlihan Plumbing & Heating Ltd · J & D O'Brien Ltd · James Collins Plumbing & Heating Ltd · James Donnelly Eco Heating Ltd · James O Connor Plumbing & Heating · Jason Fahy Heating · JBS Construction Ltd · JFK Plumbing and Heating Ltd · JJS Plumbing & Heating Limited · Joe Dunican Plumbing And Heating Ltd · Joe Hegarty Plumbing Ltd · John G. Mc Sweeney Ltd · Kenneth Murphy Heating & Plumbing · Kevin Buckley Heating & Plumbing · Kevin English Heating & Plumbing · Kieran Fitzpatrick Plumbing & Heating Ltd · LVP Renewables Ltd · Marron Activ 8 Energies Ltd · McManamon Mechanical Services Ltd · Midwest Eco Energy · MMCM Plumbing Services · Noel Conway Plumbing Ltd · NZEB Technologies Ltd · O Brien Bros Plumbing & Heating Ltd · O Mahony Renewable Solutions Ltd · Owen Aherne Plumbing & Heating · Pat F Murphy · Pawels Heating and Plumbing Ltd T/A PS Heating and · PC Plumbing And Heating Ltd · PH Mechanical t/a Keltic Heating and Plumbing · Plumbtech Ltd · Robert Gibbons Plumbing · Robert McGarry Plumbing & Heating · Royal Renewables Ltd · SCMS Mechanical Services Ltd · Shane Ryan Plumbing & Heating · Solaregy T/A Sola · Solaris Green Energy · Stephen Murphy Plumbing & Heating Ltd · TAF Plumbing Ltd · Thermax Ltd · Tom Kennedy Plumbing & Heating · West Kerry Heat & Plumbing Ltd · White Premier Construction Ltd

What it costs, and what the grant pays

The grant for a semi-detached house is €1,200. These are national figures, not Waterford 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 Waterford

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 Waterford?: 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 Waterford 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 Waterford

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.