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 Donegal?

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 Donegal 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.

Heating controls installers in Donegal

136 companies on the SEAI register are based in or serve Donegal for heating controls (register as of 8 September 2026).

Based in Donegal

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

A1 Plumbing & Heating
Attic insulationHeat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 18189
Based in Donegal.
Adrian Sweeney Plumbing & Heating Contractors
Heat pumpHeating controlsSolar hot water
Based in Donegal · serves Ulster · SEAI no. 13094
Based in Donegal.
Apex Renewables
Heating controls
Nationwide · SEAI no. 19382
Based in Donegal.
Bernard Mc Elhinney Plumbing & Heating Contractor
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 15760
Based in Donegal.
CTI Teo T/A Gallagher Heating Systems
Heat pumpHeating controls
Based in Donegal · serves Connacht and Ulster · SEAI no. 10145
Based in Donegal.
Daask Build Ltd
Attic insulationHeating controlsInternal wall insulation
Based in Donegal · serves Ulster · SEAI no. 18314
Based in Donegal.
DMT Renewables Ltd
Attic insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulation
Based in Donegal · serves Dublin, Leinster, Connacht and Ulster · SEAI no. 17260
Based in Donegal.
Efficient Renewables Ltd
Heat pumpHeating controlsSolar hot waterSolar panel
Nationwide · SEAI no. 16225
Based in Donegal.
Ferm Eng Ltd
Attic insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterSolar panel
Based in Donegal · and 8 other counties · SEAI no. 10112
Based in Donegal.
Foyleview Heating And Plumbing
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 15942
Based in Donegal.
FS Plumbing & Heating Ltd
Attic insulationHeat pumpHeating controlsInternal wall insulationSolar hot water
Based in Donegal · serves Dublin and Ulster · SEAI no. 10505
Based in Donegal.
Gallagher Plumbing & Heating Ltd
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 18112
Based in Donegal.
GD Plumbing services
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 18052
Based in Donegal.
GL Plumbing & Heating
Heat pumpHeating controls
Based in Donegal · serves Connacht and Ulster · SEAI no. 20166
Based in Donegal.
I Heating And Cooling Ltd
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 17124
Based in Donegal.
J&D Plumbing & Heating
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 18251
Based in Donegal.
J&S Renewables Ltd
Heat pumpHeating controls
Based in Donegal · serves Dublin and Ulster · SEAI no. 12172
Based in Donegal.
Jim Mullin Plumbing & Heating
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 14466
Based in Donegal.
Lynch Plumbing Renewables Ltd T/A Lynch Plumbing
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 17041
Based in Donegal.
Martin Mannion / Oil Burner Services
Heating controls
Based in Donegal · serves Connacht and Ulster · SEAI no. 11486
Based in Donegal.
Masterson Plumbing & Heating Ltd
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 11988
Based in Donegal.
Mc Menamin Building Contractors Ltd
Attic insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationWindow and door
Based in Donegal · serves Dublin and Ulster · SEAI no. 16109
Based in Donegal.
McCaffrey Mechanical Services Ltd.
Heat pumpHeating controlsSolar panel
Based in Donegal · serves Connacht and Ulster · SEAI no. 17579
Based in Donegal.
Mcgahern Plumbing And Heating
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 18262
Based in Donegal.
McGonagle Group Ltd
Attic insulationHeat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 11029
Based in Donegal.
Michael Quigley Plumbing & Heating Services
Heat pumpHeating controls
Nationwide · SEAI no. 18253
Based in Donegal.
N W Renewables Ltd
Heat pumpHeating controlsSolar hot water
Based in Donegal · serves Ulster · SEAI no. 17840
Based in Donegal.
Nelson Bros
Heating controls
Based in Donegal · serves Ulster · SEAI no. 12216
Based in Donegal.
Northern Refrigeration Services Ltd
Heat pumpHeating controls
Based in Donegal · serves Connacht and Ulster · SEAI no. 14647
Based in Donegal.
Nutherm Renewables (Ireland) Ltd
Heat pumpHeating controls
Nationwide · SEAI no. 17710
Based in Donegal.
Patrick McCarron Plumbing & Heating
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 13811
Based in Donegal.
SMM Plumbing and Heating
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 17046
Based in Donegal.
T Mcl Plumbing And Heating Ltd
Heat pumpHeating controls
Based in Donegal · serves Ulster · SEAI no. 13096
Based in Donegal.
VKG Trading Ltd
Heat pumpHeating controlsSolar hot water
Based in Donegal · serves Connacht and Ulster · SEAI no. 13102
Based in Donegal.

Also cover Donegal from elsewhere (102)

These told SEAI they cover the province Donegal 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) · Churchfield Home Services (OSS) · Cooper Insulation Ltd. (OSS) · Electric Ireland Superhomes (OSS) · Envirobead Ltd. (OSS) · Greenwatt 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) · Alan Fox Plumbing And Heating · Allbrite Heatpump Specialists Ltd · Alternative Heating & Cooling Ltd · Anthony Brady Plumbing Limited · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · Apex Engineering · B K Plumbing & Heating · Base Engineering Ltd · Beaufield Heating Services Ltd · Beltech Renewables Ltd · Blackwell Consultancy T/A Blackwell Contracts · Bluebuild Renewables Ltd · Breen Heating and Plumbing Ltd · Breffni Renewables Ltd · C.D.M. Contracts Ltd · CGP · Ciocan Construction Ltd · Cok Electrical & Renewables Ltd · Cowan Heating and Plumbing LTD · Cunningham Mechanical Services Ltd · CW Xterior Solutions Ltd · DC Energy Solutions · Derchil Limited t/a CosiHomes · Doon Valley Plumbing Ltd · DT Plumbing & Heating Ltd t/a M3 Plumbing &Heating · Duffy Plumbing & Heating · DW Plumbing & Heating · Ecoflex Energy Ltd · Edward Eccleston · Eitas · Energy Saving Technologies Ltd T/A Energlaze · Eurotech Renewables Ltd · F Jordan Plumbing + Heating · Floelen Construction Ltd · FND Heating Ltd · Gilroy Heating Services Ltd · Green Air Technologies Ltd · Green Energy Heating Solutions Limited · Greentherm Ltd. · Grigheat Ltd · Hagim Gas Ltd · Home Building Solutions T/A HBS Elegant build Ltd · J & D O'Brien Ltd · James Donnelly Eco Heating Ltd · Jason Fahy Heating · Joe Cummins Plumbing & Heating · Kelly Insulation Heating & Plumbing · Kor Plumbing & Heating · KS Heating Concepts Limited · Leitrim Warmer Homes CLG · Low Cost Plumbing & Gas · LVP Renewables Ltd · M & C Hybrid Energy Ltd · M & R Plumbing & Heating Ltd · M.K. O'Neill Plumbing & Heating Ltd · Marron Activ 8 Energies Ltd · Mc Elligott Heating & Plumbing Limited · McElligotts Limited T/A EZ Heat · Michael Gibbons Plumbing & Heating Ltd · Mullagh Heating And Plumbing Ltd · Mulvany Electrical Contracting Ltd T/A East Coast · Niall Smith Energy Renewables Ltd · Nodaat Plumbing Ltd T/A DNA Partners · Northwest Heating And Plumbing · NZEB Technologies Ltd · Ollie Nally Heating & Plumbing · Pauric Curran T/A Breffni Mechanical Ltd · PMAC Mechanical · PMCG Services · PMK Mechanical Ltd. · Proservice Technicians Ltd · Ramor Renewable Heating and Plumbing · Rer Electrical & Solar Ltd Ta Rer Energy · Royal Renewables Ltd · Silverstream Renewables Ltd · SJM Plumbing And Heating · Solaregy T/A Sola · Solaris Green Energy · Sterio Renewables · T&V Plumbing & Heating Ltd · TLI Group Ltd T/A Transmission Links Ireland Ltd · Verde Remediation Services Ltd · Whitemoor Plumbing Ltd · Zetta Home Services Ltd

What it costs, and what the grant pays

The grant for a semi-detached house is €700. SEAI recorded a middle price of €3,500 for this work last year, which leaves about €2,800 for you to pay. These are national figures, not Donegal 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 heating controls quotes in Donegal

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 Donegal?: 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 Donegal 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 Donegal

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.