Quinn Energy & Electric
“Installation went great from a homeowner's perspective - noise and general disruption was minimal and everybody on site was professional and happy to answer questions along the way.”
Best HVAC Contractors in Dartmouth, NS
24 companies listed · 16 in Dartmouth · 4 open 24/7 · 7 open weekends · 19 rated 4.5+
Data verified October 21, 2026
Halifax Heat Pumps & Electrical
“From the excellent and responsive support in the office, the service team, and the efficient team on the install day, everything has been terrific.”
Sunshine Renewable Energy
“Great company to deal with, easy to set up an appointment and I love the option to pay via e-transfer.”
Shines Energy Inc.
“Always professional and polite whether you are speaking with customer service of the technicians.”
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Nova Clean Air Heat Pump Cleaning
“I'm happy I could support a small family business and I will be using them again in the future.”
Greenfoot Energy Solutions
“I have to say I'm so impressed with the service and professionalism of the Greenfoot team that did our heat pumps.”
The 24 companies listed for Dartmouth, NS handle furnaces and heat pumps in winter and the cooling side in summer. Profiles repeat what each firm publishes about hours, licensing and brands, with ratings and review quotes gathered from public reviews.
Area overview: Dartmouth, NS
16 of the 24 companies we list are based in Dartmouth; the other 8 serve Dartmouth from towns including Halifax, Bedford and Grand Lake. 22 of the companies on this page have a rating, from 3.9 to 5.0 across 4,617 reviews; 13 have 50 or more reviews and 19 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (94%), punctuality (78%) and responsiveness (78%). The topics that come up most in reviews of the companies on this page are "efficient", "estimates" and "communication". 4 are open around the clock; 6 are open on Saturdays and 6 on Sundays. 1 shows a licence on its website. Domain records put 8 websites of the companies on this page at ten or more years old; the oldest dates from 1994. 5 offer emergency call-outs; 7 offer financing or payment plans; 9 give free estimates; 1 is family- or locally-owned and 4 list coupons or special offers. We have a website on file for all 24 of the companies on this page; 22 publish a contact page; 20 list a public email and 3 take bookings online. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Do any heating firms listed for Dartmouth work on Saturdays or Sundays?
Saturday or Sunday hours show up for 7 of the 24 companies on this page. Saturday is mostly repair work; installations land on weekdays, because supply houses and municipal inspectors keep weekday hours.
Sweep Home Efficiency & Air Quality
“I swear that he just installed a new heat pump when I wasn't looking.”
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Twenty Degrees Limited
“Cant say enough good about a company who 6 years into a warranty steps up with no hesitation.”
Evergreen Electric Ltd.
“Excellent service, very professional, knowledgeable, polite, honest, clean, neat & tidy service.”
Scotia Mechanical Solutions Ltd
“Top of the line product as well (Trane) My home was well taken care of and they assured me everything was going to be ok.”
Ainsworth
Commercial Heating & Air Conditioning
“Good solid guys and are always will to help out when you needed a hand”
Allstar Ventilation Ltd
“We got a new HVAC system installed, and Dave and his team were very professional and informative.”
Rdmd
“Jonathan was great to work with -very responsive and very helpful , never had to wait for a response from him and he always was very quick and helpful .”
Griffin Air Balancing
Controls & Equipment Ltd
Joes Plumbing Heating and Air Conditioning
“Helped with the sink even though they only came for the tub!”
Good Air Ventilation Systems Inc.
“I was very pleased with the service and plan to use this company regularly.”
Nova Home Heating
“Very happy with the job , I had my chimney relocated with a direct vent option … glad I made the call”
Presidential Ventilation
“Every experience I have had with Presidential, from when they installed my heat pump to the annual maintenance, has been outstanding.”
Breathe Clean Mini Split Heat Pump Cleaning
“Tom and his crewman were the best ever in home technicians that have attended my residence for any service work.”
Bremner's Plumbing & Heating Ltd.
“They came right away to check out the cause and found the problem and what needed to be done to fix the problem.”
Ace Refrigeration and Air Conditioning
“Extremely fast and accurate fix done was completed on our heat pump by one of the most plesent people I have ever met.”
Ready Refrigeration
“Many thanks to Taylor for making my service call go smooth, appears a very efficient company to me.”
Why these companies made our list
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