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 Sligo?

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 Sligo 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.

Heat pump installers in Sligo

238 companies on the SEAI register are based in or serve Sligo for heat pumps (register as of 8 September 2026).

An air-to-water heat pump unit standing on a plinth against a rendered gable wall. — Wärmepumpe Außeneinheit (air-to-water heat pump outdoor unit) · Mueller felix · CC BY-SA 4.0 · Photo credits

Based in Sligo

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

Alex Byrne
Heat pump
Based in Sligo · serves Connacht and Ulster · SEAI no. 17118
Based in Sligo.
AMS Plumbing & Heating Specialists Ltd
Heat pumpHeating controlsSolar hot water
Based in Sligo · serves Connacht · SEAI no. 10343
Based in Sligo.
Anthony Kilcolm
Heat pumpHeating controls
Based in Sligo · serves Connacht · SEAI no. 16212
Based in Sligo.
Brusna Energy Solutions Ltd
Attic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and door
Based in Sligo · serves Connacht · SEAI no. 10066
Based in Sligo.
Enviro - Therm Ltd
Heat pump
Based in Sligo · serves Connacht · SEAI no. 17053
Based in Sligo.
Feeney Heat and Gas Ltd
Heat pumpHeating controls
Based in Sligo · serves Dublin, Leinster and Connacht · SEAI no. 17390
Based in Sligo.
Finn Heat Pumps Limited
Heat pump
Based in Sligo · serves Connacht · SEAI no. 10559
Based in Sligo.
Glenhill Plumbing Services
Heat pumpHeating controls
Based in Sligo · serves Connacht · SEAI no. 17861
Based in Sligo.
James Lynch Plumbing & Heating Ltd
Heat pumpHeating controlsSolar hot water
Based in Sligo · serves Connacht · SEAI no. 15315
Based in Sligo.
John Hession Heating & Plumbing
Heat pumpHeating controls
Based in Sligo · serves Connacht · SEAI no. 11754
Based in Sligo.
Kilian McGowan Heating & Plumbing
Heat pumpHeating controls
Based in Sligo · serves Connacht · SEAI no. 11464
Based in Sligo.
Mark Molloy
Heat pumpHeating controls
Based in Sligo · serves Connacht · SEAI no. 16650
Based in Sligo.
Patrick Gallagher Heating & Plumbing
Heat pump
Based in Sligo · serves Connacht · SEAI no. 13657
Based in Sligo.
Paul Feely Plumbing & Heating
Heat pump
Based in Sligo · serves Connacht · SEAI no. 19793
Based in Sligo.
Raymond Mullarkey Plumbing & Heating
Heat pumpHeating controls
Based in Sligo · serves Connacht · SEAI no. 18148
Based in Sligo.
Sean Gallagher Plumbing + Heating Ltd
Heat pumpHeating controlsSolar hot water
Based in Sligo · serves Connacht · SEAI no. 11291
Based in Sligo.
Taaffe Plumbing and Heating Limited
Heat pumpHeating controls
Based in Sligo · serves Dublin and Connacht · SEAI no. 14740
Based in Sligo.

Also cover Sligo from elsewhere (221)

These told SEAI they cover the province Sligo 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) · Adrian Doorley Plumbing & Heating · Aidan Murray Heating & Plumbing Ltd · Air Flow Air Refrigeration Galway Ltd T/A Airflow · Airsol Renewable Solutions Ltd · Allbrite Heatpump Specialists Ltd · Alternative Energy Ireland AEI · Alternative Heating & Cooling Ltd · Anthony Brady Plumbing Limited · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · Anthony Egan Heating And Plumbing · Ap Renewables Ltd · Atlantic Heating And Cooling · Ballyhogan Plumbing Services Ltd · Base Engineering Ltd · Bayside Heating Ltd · Blackstrand Retrofit Ltd. · Breandan Lynch Construction Services · Brian Scally Plumbing Services · Brian Smith Heating & Plumbing Ltd · Bromur Energy Ltd · Caimin Dooley Heating & Plumbing · Castlelough Corporation Ltd · Cathal Cawley Plumbing And Heating · Cathal Hughes Heating & Plumbing · Clever Energy Solutions Ltd · Climate Control Renewables Limited · Cloverhill Renewables Ltd · Colin Lynskey Plumbing And Heating · Colmur Heating + Plumbing Ltd · Cork Gas Electrical Services · Cowan Heating and Plumbing LTD · Craft Heating & Plumbing Services · Craughwell Heating Ltd T/A Natural Green Energy · CTI Teo T/A Gallagher Heating Systems · Culmore Heating & Plumbing Ltd · D.P.H Plumbing Ltd · Daigon Ltd · Damian Grehan Plumbing & Heating · Daria Ltd T/A Ej Fidgeon · David Coleman Renewables Ltd. T/A DC Renewables · Declan Gallagher Heating & Plumbing · Derek Corcoran Heating & Plumbing · Dika Home Maintenance · DMC mechanical construction ltd · DMT Renewables Ltd · Duignan Plumbing Ltd · DW Plumbing & Heating · Dylshan Enterprises Limited · Eco Cool Refrigeration Ltd · Eco Energy Systems · Eco Pro Plumbing LTD · Ecoflex Energy Ltd · Ecoscene · Ecotech Contracts IRI Ltd · Ed O Halloran Heating & Plumbing Ltd · EDH Construction & Maintenance · Efficient Renewables Ltd · Eitas · Energy Superstore Ltd · Energywise Savings Ireland Ltd · Eoin Hanniffy Trades 365 Ltd · Eoin McQuinn Heating & Plumbing · Eurotech Renewables Ltd · Feakle Gas & Plumbing Ltd · Ferguson Heating & Plumbing · Ferm Eng Ltd · FFS Motor & Trading Services Ltd · Finlay EcoFit Tullamore Ltd · Finvarra Ltd · Fitzpatrick Plumbing & Heating Contractors Ltd · Fmc Plumbing & Construction Ltd · FND Heating Ltd · Forsah Energy Limited · Frank Roche Air Conditioning Ltd T/A Frank Roche · Free-Flo Heating + Gas Services Ltd · G. Traynor & Sons Ltd · Gaffney Mechanical · Galway Plumbing Solutions · Gerry Mchale Plumbing & Construction Contractors · Gilroy's Green Energy Ltd · GL Plumbing & Heating · Glenn Judge Heating & Plumbing Ltd · Green Air Technologies Ltd · Green Home Plumbing LTD · Green Joule Heating & Plumbing · Greentherm Ltd. · Heat Pump Troubleshooters Ltd · Heatgen Installations Limited · Home Building Solutions T/A HBS Elegant build Ltd · Homergy Ltd T/AComfort Solutions Retrofit · Hooban Heating & Plumbing · Horan Plumbing Ltd · HS Plumbing & Heating · Ian Connolly Plumbing · J & D O'Brien Ltd · J O Donnell Plumbing & Heating · James Donnelly Eco Heating Ltd · James Heneghan Electrical Plumbing And Heating · James Kane Energy Solutions LTD · James O Connor Plumbing & Heating · James Sweeney · Jason Fahy Heating · JF Heating Ventilation LTD TA Western Heat Pump · JJS Plumbing & Heating Limited · Joe Dunican Plumbing And Heating Ltd · Joe Gavin Ltd · Joe Hegarty Plumbing Ltd · John G Flannery Heating & Plumbing · John Neary Heating And Plumbing Ltd · Joseph Kenny Heating & Plumbing Ltd · Joseph Madden Heating and Plumbing Ltd · Joseph Sheridan · Kd Mechanical Engineers Ltd. Trading As Kd Group · Kevin Durkin Heating And Plumbing Services · KG Plumbing & Heating Ltd · Khiggins Electrical Ltd · Kieran Doyle · Killco Renewables Ltd · Kilroe Heating and Renewables Ltd · Knockglass Renewables Ltd · Kolkacool Ltd · Kor Plumbing & Heating · Ksg Heating & Plumbing Limited · Lakeview Heating & Plumbing Ltd · Larkfield Plumbing Contractors Ltd · Laurence Walsh Heating & Plumbing · Leitrim Warmer Homes CLG · Liam Reddington Heating And Plumbing · Liss Mechanical Services LTD · Low Cost Plumbing & Gas · LVP Renewables Ltd · Lynch Ecoenergy Engineering Ltd · M.K. O'Neill Plumbing & Heating Ltd · MacAire Mechanical Services Ltd · Mark Dunne Plumbing & Heating · Marron Activ 8 Energies Ltd · Martin Fahy Heating & Plumbing Ltd · Mc Cormack Plumbing & Construction Ltd · Mc Elligott Heating & Plumbing Limited · MC Heat Pumps & Ventilation · McCaffrey Mechanical Services Ltd. · McElligotts Limited T/A EZ Heat · McHugh Heating & Plumbing Ltd · McManamon Mechanical Services Ltd · Metro Utilities Ltd T/A Metro Developments · MFG Construction Ltd · Michael Quigley Plumbing & Heating Services · Michael Walsh Plumbing And Heating · Miguel Moreau Plumbing · Mike Kelly Plumbing & Heating Limited · Mulvany Electrical Contracting Ltd T/A East Coast · N.Cunningham Mechanical Services Ltd · Niall Muldoon · Noel Drummond Heating & Plumbing Ltd · Noonan Refrigeration Systems Ltd Ta Revolution Energy · Northern Refrigeration Services Ltd · Nutherm Galway Ltd · Nutherm Renewables (Ireland) Ltd · NZEB Technologies Ltd · O Brien Bros Plumbing & Heating Ltd · Ollie Nally Heating & Plumbing · P.J. McHale · Patrick Gallagher Heating & Plumbing Ltd · Patrick O'Brien Plumbing and Heating · Paul Folan Plumbing & Heating Contractor · PC Plumbing And Heating Ltd · Penrose Electrical Ltd · Peter Garrivan Plumbing · Peter McCann T/A Sean McCann & Son · PMCG Services · Premier Heating Consultants Ltd. · Proservice Technicians Ltd · R O'Donnell Plumbing Ltd · Rb Heating And Plumbing Ltd · Rend Master Ltd · Robbie Mcgovern Ltd. · Rory Quigley Heating & Plumbing · Roscommon Heating & Plumbing Ltd · Royal Renewables Ltd · RTS Heating & Cooling Services LTD · Sa Plumbing And Heating Ltd · Sean Paul Construction Ltd · Solaregy T/A Sola · Solaris Green Energy · Stephen Mc Guinness Plumbing Ltd Smg Mechanical · Stephen Treacy Heating and Plumbing Ltd · Sterio Renewables · Steven Walsh Heating & Plumbing · Stf Renewable Limited · TAF Plumbing Ltd · Terence Mc Donagh · Thermax Ltd · Thomas Walsh Mechanical Services Ltd · Tirconaill Contracts Ltd T/A Mc Taggart Insulation · Treaty Renewables Limited · Troy Heating And Plumbing Ltd · Verde Remediation Services Ltd · VKG Trading Ltd · Walsh Heating & Cooling Ltd · Walshs Heating Plumbing And Renewables Ltd · White Premier Construction Ltd · Whitemoor Plumbing Ltd · Zetta Home Services Ltd

What it costs, and what the grant pays

The grant for a semi-detached house is €6,500. SEAI recorded a middle price of €16,832 for this work last year, which leaves about €10,332 for you to pay. These are national figures, not Sligo 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 heat pumps quotes in Sligo

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 Sligo?: 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 Sligo 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 Sligo

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.