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PoolBuilderIndex

Best Pool Heating & Heat Pump Installers in Toronto & the GTA

Who tops the GTA list for pool heating?

Last updated:By The Pool Trade Desk

  1. 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
  2. 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
  3. Gas Line Installers, photographed at its own listing

    Gas Line Installers

    5.0★ rating · 43 Google reviews

    68/100 score

    The Kingsway · Pool Heating

    Monday: 9 a.m.–9 p.m.

    • Says it is licensed
    • Says it is insured
  4. 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
  5. Align Heating, photographed at its own listing

    Align Heating

    4.9★ rating · 104 Google reviews

    67/100 score

    Pool Heating · Service area not recorded

    • Says it is licensed
    • Says it has been going since 2016

The remaining 30 pool heating companies in the GTA

  1. 13Topcare Hvac 4.8★ · 58 reviews
  2. 14Clarkson Comfort Zone heating and air 5.0★ · 24 reviews
  3. 15Air Flex Heating And Cooling Ltd 4.6★ · 76 reviews
  4. 16Hyper Heating & Cooling 5.0★ · 194 reviews
  5. 17Thermex Heating and Air Conditioning Inc. 5.0★ · 174 reviews
  6. 18Rico's HVAC Service and Installation Inc 4.9★ · 100 reviews
  7. 19Air Solar System Inc 5.0★ · 71 reviews
  8. 20International Pool And Spa Centers Oakville 4.3★ · 101 reviews
  9. 21International Pool & Spa Centers 4.2★ · 403 reviews
  10. 22DHS Systems Inc. 4.8★ · 150 reviews
  11. 23Optimum Climate Services 5.0★ · 49 reviews
  12. 24Pool Village 4.7★ · 91 reviews
  13. 25Quality Home Comfort 4.8★ · 270 reviews
  14. 26Brothers HVAC 5.0★ · 32 reviews
  15. 27International Pool & Spa Centers Thornhill 4.5★ · 116 reviews
  16. 28Recreational Warehouse Mississauga 4.4★ · 157 reviews
  17. 29Charlie's Gas Services Inc. 4.9★ · 56 reviews
  18. 30RBZ Climate Solutions 5.0★ · 7 reviews
  19. 31South Service Heating & Air Conditioning Inc. 5.0★ · 11 reviews
  20. 32International Pool and Spa Centres 3.9★ · 26 reviews
  21. 33Heat/Cool Depot 5.0★ · 8 reviews
  22. 34International Pool and Spa Ajax 4.3★ · 60 reviews
  23. 35Pool Boys 5.0★ · 3 reviews
  24. 36The Cover Guy 3.7★ · 736 reviews
  25. 37Apex Electric and Mechanical inc. 5.0★ · 10 reviews
  26. 38Lutech Gas Services Co Ltd 4.2★ · 35 reviews
  27. 39Daystar Energy Products International 5.0★ · 5 reviews
  28. 40MJL Heating & Mechanical 5.0★ · 1 reviews
  29. 41Vaughan Pool Heater and Gas Fireplace Repair Service 5.0★ · 1 reviews
  30. 42The Gas Guy Burlington pool heaters 4.0★ · 4 reviews

42 pool heating companies across Toronto and the GTA, compiled August 2026 · 4,558 Google reviews · average 4.75★ · typical $3,500–$9,500 per installation (CAD), per Apex Electric Mechanical (Toronto and GTA, 2026)

19 of the 42 rated companies on this page hold exactly 5.0★, the deepest of them on 311 reviews against a page median of 76, so review volume is what separates them here.

29 open Saturdays · 42 with photos · 41 with a website · 39 reviewed in the year to August 2026

PoolBuilderIndex tracks 42 pool heating companies working across Toronto and the GTA, averaging 4.75★ on Google over 4,558 reviews. Natural gas pool heater, total installed runs $3,500–$9,500 per installation (CAD) in the GTA according to Apex Electric Mechanical (Toronto and GTA, 2026).

Which corner of the GTA is the pool in?

2 GTA areas

PoolBuilderIndex publishes a dedicated pool heating ranking for 2 GTA areas, each built from that area's own companies.

Toronto pool heating prices, and where each number came from

8 priced line items

According to Apex Electric Mechanical (Toronto and GTA, 2026), natural gas pool heater, total installed runs $3,500–$9,500 per installation (CAD) in the GTA, while natural gas pool heater, installed runs $2,500–$5,500 per installation (CAD) according to Swimpool 360 (Ontario, 2026). How to read these rows, and what a quote leaves out.

GTA pool heating, priced from published Ontario sources as of August 2026. The source sits in the row it belongs to.

  • Natural gas pool heater, total installed

    Typical range
    $3,500–$9,500
    Unit
    per installation (CAD)
    Condition
    The source splits this as $2,000-$5,500 for the unit and $1,500-$4,000 for installation, and labels the total 'typical' rather than a ceiling.
  • Natural gas pool heater, installed

    Typical range
    $2,500–$5,500
    Unit
    per installation (CAD)
    Condition
    The lowest upfront cost of the powered heaters, which the source pairs with the highest running cost of any option.
  • Gas pool heater, purchase and installation

    Typical range
    $3,000–$5,500
    Unit
    per installation (CAD)
    Condition
    'On average, about', in the source's own words, and it depends on the size and type of heater bought.
  • Gas heater equipment only

    Typical range
    $2,000–$5,500
    Unit
    per unit (CAD)
    Condition
    Unit only. The same source adds $1,500 to $4,000 for installation on top of this.
  • Electric heat pump pool heater, total installed

    Typical range
    $5,000–$11,000
    Unit
    per installation (CAD)
    Condition
    The source splits this as $3,500-$7,500 for the unit and $1,500-$3,500 for installation, and calls the total typical. It also warns capacity drops below 55F and most units stop working below 40F.
  • Electric heat pump pool heater, installed

    Typical range
    $4,500–$8,000
    Unit
    per installation (CAD)
    Condition
    The highest upfront cost of the three types, bought back on running cost. The source says efficiency falls once air drops below 10 to 15 degrees Celsius.
  • Heat pump pool heater, purchase and installation

    Typical range
    $3,000–$6,000
    Unit
    per installation (CAD)
    Condition
    'Around', per the source, for the heater and the installation together. It notes heat pumps take longer to heat than the alternatives.
  • Solar pool heating system, total installed

    Typical range
    $3,500–$8,500
    Unit
    per installation (CAD)
    Condition
    The source splits this as $2,000-$5,000 for collectors and $1,500-$3,500 for installation, and calls the total typical.

See the full Pool Heating cost guide

How does PoolBuilderIndex rank pool heating companies?

40 of 42 rated

By the published PoolBuilderIndex Score, never by payment. The median pool heating company here carries 82 Google reviews, and 40 of the 42 have enough to rate. 68% of the rated ones clear 4.8★, so the gaps between them are narrow. Read our full methodology.

Questions to ask your contractor

  • How did you size this unit: on pool volume, cover use, or the temperature I asked for?
  • Is the gas line or electrical supply included, and does it need upgrading? Connection costs to expect
  • What are the running costs of this unit compared with the alternative you did not quote?
  • Who handles the permit and the inspection for the gas or electrical work?
  • What does the warranty cover, and does it require annual servicing to stay valid?

Frequently asked questions

What should I expect to pay for pool heating around Toronto?

According to Apex Electric Mechanical (Toronto and GTA, 2026), natural gas pool heater, total installed runs $3,500–$9,500 per installation (CAD), and natural gas pool heater, installed runs $2,500–$5,500 per installation (CAD) according to Swimpool 360 (Ontario, 2026).

How do I tell a good pool heating company from a bad one?

PoolBuilderIndex lists 42 pool heating companies averaging 4.75★ on Google with a median of 82 reviews each, so a company well below that median is being judged on very few opinions. The questions worth asking a pool heating company are listed above.

What month should I be booking pool heating for?

Heater and heat pump work sits in the Apr–Oct window, along with the gas or electrical connection it needs. Quotes are easier to get before the season opens, because the same companies are on service calls once it does.

Does pool heating in Ontario need a permit?

Not on its own. Pool heating does not normally trigger a permit, but work that changes the pool's footprint, the deck or the fence line can, and the enclosure has to keep meeting the municipality's rules afterwards.

What should you read next?

10 related pages

Three quotes for pool heating, from GTA companies already on this list

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