Markham Heating & Air Conditioning
5.0★ rating · 113 Google reviews
82/100 score
Agincourt · Pool Heating
Monday: 7 a.m.–8 p.m.
- Says it is licensed
- Says it is insured
5.0★ rating113 Google reviews
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
Halton Heating and Gas Services
5.0★ rating · 311 Google reviews
80/100 score
Burlington · Pool Heating
Monday: 8 a.m.–8 p.m.
- Says it is licensed
- Says it is insured
5.0★ rating311 Google reviews
Healthy Indoor Air Solutions Inc.
5.0★ rating · 82 Google reviews
79/100 score
Oakville · Pool Heating
- Says it is licensed
- Says it is insured
5.0★ rating82 Google reviews
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
4.9★ rating115 Google reviews
Green Heating and Air Inc.
5.0★ rating · 181 Google reviews
71/100 score
The Annex · Pool Heating
Monday: Open 24 hours
- Says it is licensed
5.0★ rating181 Google reviews
Home Armour Heating & Air Conditioning
4.9★ rating · 129 Google reviews
70/100 score
Scarborough Town Centre · Pool Heating
Monday: 9 a.m.–5 p.m.
- Says it is licensed
- Says it is insured
4.9★ rating129 Google reviews
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
4.6★ rating54 Google reviews
Green Heating and Air Inc.
4.9★ rating · 155 Google reviews
69/100 score
Mimico · Pool Heating
Monday: Open 24 hours
- Says it is licensed
4.9★ rating155 Google reviews
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
5.0★ rating43 Google reviews
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
4.7★ rating177 Google reviews
Goldwater Solar Services Ltd
4.9★ rating · 65 Google reviews
67/100 score
King West · Pool Heating
Monday: 8 a.m.–8 p.m.
- Says it has been going since 2005
4.9★ rating65 Google reviews
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
4.9★ rating104 Google reviews
The remaining 30 pool heating companies in the GTA
- 13Topcare Hvac 4.8★ · 58 reviews
- 14Clarkson Comfort Zone heating and air 5.0★ · 24 reviews
- 15Air Flex Heating And Cooling Ltd 4.6★ · 76 reviews
- 16Hyper Heating & Cooling 5.0★ · 194 reviews
- 17Thermex Heating and Air Conditioning Inc. 5.0★ · 174 reviews
- 18Rico's HVAC Service and Installation Inc 4.9★ · 100 reviews
- 19Air Solar System Inc 5.0★ · 71 reviews
- 20International Pool And Spa Centers Oakville 4.3★ · 101 reviews
- 21International Pool & Spa Centers 4.2★ · 403 reviews
- 22DHS Systems Inc. 4.8★ · 150 reviews
- 23Optimum Climate Services 5.0★ · 49 reviews
- 24Pool Village 4.7★ · 91 reviews
- 25Quality Home Comfort 4.8★ · 270 reviews
- 26Brothers HVAC 5.0★ · 32 reviews
- 27International Pool & Spa Centers Thornhill 4.5★ · 116 reviews
- 28Recreational Warehouse Mississauga 4.4★ · 157 reviews
- 29Charlie's Gas Services Inc. 4.9★ · 56 reviews
- 30RBZ Climate Solutions 5.0★ · 7 reviews
- 31South Service Heating & Air Conditioning Inc. 5.0★ · 11 reviews
- 32International Pool and Spa Centres 3.9★ · 26 reviews
- 33Heat/Cool Depot 5.0★ · 8 reviews
- 34International Pool and Spa Ajax 4.3★ · 60 reviews
- 35Pool Boys 5.0★ · 3 reviews
- 36The Cover Guy 3.7★ · 736 reviews
- 37Apex Electric and Mechanical inc. 5.0★ · 10 reviews
- 38Lutech Gas Services Co Ltd 4.2★ · 35 reviews
- 39Daystar Energy Products International 5.0★ · 5 reviews
- 40MJL Heating & Mechanical 5.0★ · 1 reviews
- 41Vaughan Pool Heater and Gas Fireplace Repair Service 5.0★ · 1 reviews
- 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.
- Source
- PF Pools (GTA)
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.
- Source
- PF Pools (GTA)
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.
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
7 other trades in the index
Three quotes for pool heating, from GTA companies already on this list
No obligation. Requests reach our desk, never a company.