Skip to content
PoolBuilderIndex

Best Pool Heating & Heat Pump Installers in Toronto (2026)

Last updated:By The Pool Trade Desk

19 pool heating companies serving Toronto, compiled August 2026.

1,973 Google reviews · average 4.76★ · median 115 reviews each

15 open Saturdays · 19 with photos · 19 with a website · 18 reviewed in the year to August 2026

Which pool heating companies rank highest in Toronto?

67% of the rated companies here hold 4.8★ or better, and 2 of the 19 carry fewer than ten reviews, so the shortlist is shorter than the count suggests. The longest record on this page runs to 113 reviews.

  2. GasGuys.ca Inc., photographed at its own listing

    GasGuys.ca Inc.

    4.9★ rating · 115 Google reviews

    74/100 score

    Willowdale · Pool Heating

    Monday: 8 a.m.–6 p.m.

    • Says it is licensed
    • Says it has been going since 2006
    Request a quote
  4. Summertime Pool Services, photographed at its own listing

    Summertime Pool Services

    4.6★ rating · 54 Google reviews

    69/100 score

    Agincourt · Pool Heating

    Monday: 9 a.m.–5 p.m.

    • Says it is licensed
    • Says it carries WSIB coverage
    Request a quote
  6. Scottish Gas Group Inc., photographed at its own listing

    Scottish Gas Group Inc.

    4.7★ rating · 177 Google reviews

    68/100 score

    Agincourt · Pool Heating

    Monday: 8 a.m.–5 p.m.

    • Says it is licensed
    • Says it is insured
    Request a quote
  12. DHS Systems Inc., photographed at its own listing

    DHS Systems Inc.

    4.8★ rating · 150 Google reviews

    60/100 score

    Islington-City Centre West · Pool Heating

    Monday: Closed

    Request a quote

The remaining 7 in Toronto

  1. 13Quality Home Comfort 4.8★ · 270 reviews
  2. 14International Pool & Spa Centers Thornhill 4.5★ · 116 reviews
  3. 15RBZ Climate Solutions 5.0★ · 7 reviews
  4. 16International Pool and Spa Centres 3.9★ · 26 reviews
  5. 17Apex Electric and Mechanical inc. 5.0★ · 10 reviews
  6. 18Lutech Gas Services Co Ltd 4.2★ · 35 reviews
  7. 19MJL Heating & Mechanical 5.0★ · 1 reviews

What do reviewers say about pool heating companies in Toronto?

Verbatim from each company's public Google reviews, as they stood in the August 2026 dataset. PoolBuilderIndex did not write, edit or choose these for sentiment.

  • “Hi Vijay, I just wanted to follow up and say the service was excellent. Mitchell was outstanding - friendly, patient, knowledgeable, and efficient. It’s easy to see why he’s your top technician, and I’ll…”

    Markham Heating & Air Conditioning · 5★ review · left 3 months ago

  • “George helped us replace/cap an older exterior BBQ gas valve that we didn't use. He also added a support bracket to the line that we did not have previously. George answered all of our…”

    GasGuys.ca Inc. · 5★ review · left 10 months ago

  • “I got referred to Antonio because I needed work done I got quotes from other HVAC companies and Home Armour's was the most affordable and the best quality of work I could ask for.…”

    Home Armour Heating & Air Conditioning · 5★ review · left a year ago

  • “Was referred to Summertime Pools by a friend. First time using them was this year (2020). We used them to put in a new liner which looks amazing and used them again to close…”

    Summertime Pool Services · 5★ review · left 5 years ago

  • “Very pleased with the work Green Heating & Air did replacing our old boiler and water heater with a single combi-boiler in October 2025. Green provided a high-end boiler (Viessmann) at an attractive price.…”

    Green Heating and Air Inc. · 5★ review · left 9 months ago

  • “Nik arrived on time and conducted an inspection of my pool heater to see if it required a descaling for calcium. As he removed each piece of the heater, he explained what he saw,…”

    Scottish Gas Group Inc. · 5★ review · left a month ago

What pool heating costs in the GTA, priced line by line with its sources

How does PoolBuilderIndex rank pool heating companies in Toronto?

The median company on this page carries 115 Google reviews and 18 of the 19 have enough reviews to rate. Read our full methodology, including why a company from the next town over appears here.

Frequently asked questions

Which pool heating companies rank highest in Toronto?

Markham Heating & Air Conditioning (5.0★, 113 reviews), GasGuys.ca Inc. (4.9★, 115 reviews) and Home Armour Heating & Air Conditioning (4.9★, 129 reviews), in that order.

Are these companies actually based in Toronto?

3 in Markham, 1 in Mississauga, 1 in Pickering and 1 in Thornhill, and 12 elsewhere.
Questions worth asking any pool heating company before you hire

Nothing here fits. What is next to Toronto?

Three Toronto quotes for pool heating, no cost to compare them

No obligation. Requests reach our desk, never a company.

Send a request
Send a request