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Which HVAC Contractor Should You Choose in Northern Ireland?

Review 32 HVAC contractors across Northern Ireland, including Belfast, Derry and Ballymena, and find out what each company offers. Consider customer feedback and business details, then shortlist providers who handle the type of heating or air conditioning work you need.
County Antrim (16)
County Armagh (3)
County Down (5)
County Londonderry (6)
County Tyrone (2)
Armagh (2)
Ballymena (3)
Belfast (9)
Coleraine (1)
Craigavon (1)
Derry (4)
Dungannon (2)
Lisburn (2)
Magherafelt (1)
Newcastle (2)
Newry (1)
Newtownabbey (2)
Newtownards (2)
Not rated yet
Montgomery Refrigeration
Emergency
Not rated yet
We are a nationwide organisation with strategically located members across the UK.
A nationwide UK organisation of air conditioning and refrigeration contractors committed to quality service, energy efficiency, and client satisfaction through expert design and maintenance.
Air Conditioning Installation Refrigeration Systems Maintenance Services
028 9066 2111 Call Profile
Not rated yet
Chilltec Refrigeration
35 Years
Emergency
Not rated yet
We have over 30 years of experience in industrial refrigeration and HVAC systems.
Chilltec Refrigeration delivers advanced industrial refrigeration and HVAC systems across Ireland. With ISO accreditation, 24/7 breakdown support, and over 30 years of expertise, we offer tailored solutions for food processing, cold storage, and more.
Industrial Refrigeration HVAC/Air Conditioning Industrial Heat Pumps
028 2565 0038 Call Profile
Not rated yet
Butler Refrigeration
39 Years
Not rated yet
Family-run business with 28 years of industry experience
Family-run HVAC specialists since 1987, offering refrigeration, air conditioning, and temperature control solutions for commercial and industrial clients in Manchester and Staffordshire.
Refrigeration Services Air Conditioning Cold Storage Solutions
01782 611864 Call Profile
Not rated yet
Heaney Heating
Not rated yet
We are Worcester Bosch Accredited Installers with proven expertise.
Heaney Heating offers professional gas boiler installation, conversions, and servicing in Belfast. Trusted for reliable, efficient heating solutions with free quotations and financing options.
Gas Boiler Installation Gas Conversion Boiler Servicing
028 9081 5991 Call Profile
Not rated yet
FGM Boiler Services
Emergency
Not rated yet
Gas Safe and OFTEC registered engineers ensure compliance and safety
Certified boiler repairs, servicing, and installations by Gas Safe and OFTEC engineers. Serving Northern Ireland with emergency breakdown support and energy-efficient solutions since 2005.
Boiler Repair Boiler Servicing Boiler Replacement
07746 530313 Call Profile
Not rated yet
H & M Services
Emergency
Not rated yet
We have over 30 years of combined experience in heating system maintenance.
H & M Services offers professional boiler services, heating repairs, and plumbing solutions in Lisburn. With over 30 years of experience and Gas Safe accreditation, we provide reliable domestic and commercial services.
Gas Boiler Service Boiler Replacement System Flush
028 92634700 Call Profile
Not rated yet
EMD Boiler Services
Emergency
Not rated yet
We are Gas Safe registered for boiler safety and compliance.
EMD Boiler Services offers Gas Safe certified plumbing, boiler installations, and emergency repairs in Londonderry. Specialising in oil/gas boilers, heat pumps, and bathroom refurbishments with 24/7 availability.
Boilers Plumbing Heat Pumps
07706 205959 Call Profile
Not rated yet
Degree Refrigeration & Air Conditioning
Emergency
Not rated yet
20+ years of specialist HVAC experience in commercial sectors
Northern Ireland's leading HVAC specialists with 20+ years' experience. Offering refrigeration installation, air conditioning systems, and 24/7 emergency services across Ireland.
Refrigeration Installation Air Conditioning Systems Emergency Repairs
028 3885 2760 Call Profile
Not rated yet
Warmflow Engineering
50+ Years
Not rated yet
We have over 50 years of experience in oil-fired boiler manufacturing.
Warmflow Engineering, established in 1968, offers award-winning oil boilers, renewable energy systems, and hot water cylinders, providing efficient and reliable heating solutions across the UK and Ireland.
Oil Boilers Renewable Energy Systems Hot Water Cylinders
01952 607750 Call Profile
Not rated yet
Willis Heating & Plumbing
Not rated yet
We offer 135+ years of continuous mechanical services expertise
Northern Ireland's longest-established plumbing and heating specialists since 1887. Expert mechanical services including underfloor heating, renewable systems, and boiler solutions.
Heating Services Plumbing Solutions Underfloor Heating
028 9078 1236 Call Profile