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 Cavan?

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 Cavan 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 Cavan

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

Based in Cavan

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

Breffni Insulation LtdOne Stop Shop
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and door
Based in Cavan · and 24 other counties · SEAI no. 10013 · Website
Based in Cavan.
Greenwatt LtdOne Stop Shop
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and door
Nationwide · SEAI no. 17045 · Website
Based in Cavan.
Anthony Brady Plumbing Limited
Attic insulationHeat pumpHeating controlsInternal wall insulationSolar hot water
Based in Cavan · serves Dublin, Leinster, Connacht and Ulster · SEAI no. 10257
Based in Cavan.
Breffni Renewables Ltd
Heat pumpHeating controlsSolar hot water
Based in Cavan · serves Dublin and Ulster · SEAI no. 17895
Based in Cavan.
Cowan Heating and Plumbing LTD
Heat pumpHeating controlsSolar hot water
Based in Cavan · serves Dublin, Leinster, Connacht and Ulster · SEAI no. 10236
Based in Cavan.
DT Plumbing & Heating Ltd t/a M3 Plumbing &Heating
Heat pumpHeating controlsSolar hot water
Based in Cavan · serves Dublin, Leinster and Ulster · SEAI no. 10811
Based in Cavan.
F Jordan Plumbing + Heating
Heat pumpHeating controlsSolar hot water
Based in Cavan · serves Dublin and Ulster · SEAI no. 17307
Based in Cavan.
Green Energy Heating Solutions Limited
Heat pumpHeating controlsSolar hot water
Based in Cavan · serves Dublin, Leinster and Ulster · SEAI no. 15189
Based in Cavan.
M & C Hybrid Energy Ltd
Heat pumpHeating controlsSolar hot water
Based in Cavan · serves Leinster and Ulster · SEAI no. 10839
Based in Cavan.
Niall Smith Energy Renewables Ltd
Heat pumpHeating controlsSolar hot water
Based in Cavan · serves Leinster and Ulster · SEAI no. 12748
Based in Cavan.
Ramor Renewable Heating and Plumbing
Heat pumpHeating controlsSolar hot water
Based in Cavan · serves Dublin, Leinster and Ulster · SEAI no. 10246
Based in Cavan.

Also cover Cavan from elsewhere (51)

These told SEAI they cover the province Cavan 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) · Churchfield Home Services (OSS) · Cooper Insulation Ltd. (OSS) · Electric Ireland Superhomes (OSS) · Energyfix (OSS) · Envirobead Ltd. (OSS) · Home Comfort Retrofits Ltd (OSS) · House 2 Home Retrofit Ltd (OSS) · Kingdom Installation Ltd (OSS) · Kingspan Insulation Ltd (OSS) · Kore Retrofit Ltd (OSS) · Moston Construction Ltd (OSS) · OHK Energy LTD (OSS) · Retrofit Design Ltd (OSS) · Retrofit Energy Ireland (OSS) · SSE Airtricity Energy Services Ltd (OSS) · Adrian Sweeney Plumbing & Heating Contractors · Allbrite Heatpump Specialists Ltd · Alternative Heating & Cooling Ltd · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · Breen Heating and Plumbing Ltd · CGP · Ciocan Construction Ltd · Cok Electrical & Renewables Ltd · Cunningham Mechanical Services Ltd · Ecoflex Energy Ltd · Efficient Renewables Ltd · Energy Saving Technologies Ltd T/A Energlaze · Ferm Eng Ltd · FND Heating Ltd · FS Plumbing & Heating Ltd · Gilroy Heating Services Ltd · Greentherm Ltd. · Hagim Gas Ltd · J & D O'Brien Ltd · James Donnelly Eco Heating Ltd · Jason Fahy Heating · LVP Renewables Ltd · Marron Activ 8 Energies Ltd · Mc Elligott Heating & Plumbing Limited · Mullagh Heating And Plumbing Ltd · N W Renewables Ltd · NZEB Technologies Ltd · PMK Mechanical Ltd. · Royal Renewables Ltd · Solaregy T/A Sola · Solaris Green Energy · VKG Trading Ltd

What it costs, and what the grant pays

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

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 Cavan?: 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 Cavan 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 Cavan

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.