Top-Rated Heat Pump Installers in Oshawa, ON

13 local companies ranked by 9,458 Google reviews. Free to compare, no sign-up.

Ratings collected September 2026 · Page updated September 30, 2026

13Companies
9,458Google reviews
4.8★Average rating
Sep 2026Data collected
Ranked by Google reviewsNever paid forFree to compare

Short answer: The top-rated heat pump installers in Oshawa are Sentinel Heating & Cooling (5.0★, 111 reviews), LFZ Heating & Cooling (4.9★, 206 reviews), Cassar Heating & Air Conditioning (5.0★, 57 reviews).

Heat Pump installers in Oshawa, ranked 13 listed

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  1. 1
    Sentinel Heating & CoolingTop pickHighest rating (50+ reviews)
    5.0 (111 Google reviews)
    62 Cromwell Ave, Oshawa, ON L1J 4T6
    Call (647) 448-2544WebsiteGoogle reviewsDirectionsEmail [email protected]
  2. 2
    LFZ Heating & CoolingTop pick
    4.9 (206 Google reviews)
    1318 Apollo St, Oshawa, ON L1K 3E6
    Call (416) 779-4863WebsiteGoogle reviewsDirectionsEmail [email protected]
  3. 3
    Cassar Heating & Air ConditioningTop pick
    5.0 (57 Google reviews)
    Oshawa, ON L1G 6C3
    Call (416) 508-4585WebsiteGoogle reviewsDirectionsEmail [email protected]
  4. 4
    Superior HVAC Service, Heating & Air Conditioning
    5.0 (52 Google reviews)
    21 Simcoe St S, Oshawa, ON L1H 4G1
    Call (647) 956-3863WebsiteGoogle reviewsDirectionsEmail [email protected]
  5. 5
    Superior HVAC Service
    5.0 (52 Google reviews)
    21 Simcoe St S, Oshawa, ON L1H 4G1
    Call (647) 956-3863WebsiteGoogle reviewsProfileDirectionsEmail [email protected]
  6. 6
    Active Climate Mechanical
    5.0 (51 Google reviews)
    303 Wilson Rd N, Oshawa, ON L1G 6E4
    Call (289) 892-2410WebsiteGoogle reviewsProfileDirectionsEmail [email protected]
  7. 7
    Reliance Heating, Air Conditioning & PlumbingMost reviews
    4.8 (7,899 Google reviews)
    1155 Boundary Rd Unit 8, Oshawa, ON L1J 6Z7
    Call (866) 529-8514WebsiteGoogle reviewsDirections
  8. 8
    Max Comfort Heating & Cooling
    4.9 (74 Google reviews)
    Oshawa, ON L1J 1G8
    Call (905) 260-7323WebsiteGoogle reviewsDirectionsEmail [email protected]
  9. 9
    Limcan Certified Heating and Air Conditioning
    4.8 (706 Google reviews)
    501 Ritson Rd S Unit 1, Oshawa, ON L1H 3B5
    Call (289) 316-1922WebsiteGoogle reviewsDirections
  10. 10
    Boyle Energy Solutions
    5.0 (32 Google reviews)
    384 Athol St E, Oshawa, ON L1H 1L1
    Call (905) 404-5048Google reviewsDirections
  11. 11
    Superior Plumbing & Heating of Oshawa
    4.9 (53 Google reviews)
    202 King St E Unit 11, Oshawa, ON L1H 1C4
    Call (647) 696-1503WebsiteGoogle reviewsDirectionsEmail [email protected]
  12. 12
    Ontario Smart Heating & Cooling Inc
    5.0 (29 Google reviews)
    1049 Schooling Dr, Oshawa, ON L1K 0N9
    Call (647) 819-6004WebsiteGoogle reviewsDirectionsEmail [email protected]
  13. 13
    Stacks Heating and Air
    4.8 (136 Google reviews)
    415 Pompano Ct, Oshawa, ON L1K 1M9
    Call (647) 825-7829Google reviewsDirections

Together these 13 companies average 4.8★ across 9,458 reviews. Reliance Heating, Air Conditioning & Plumbing has the most reviews (7,899).

Ranked by Google rating weighted by review count, collected September 2026. Rankings are never paid for. How we rank and how we make money.

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What a heat pump costs in Oshawa

Typical installed priceabout $12,000 to $20,000

For a cold-climate central ducted heat pump in a detached house. Your home may cost more or less.

Heat pump rebates open in Oshawaup to $12,000

That could cut your cost by up to $12,000 if you qualify. Most rebates have rules (income, your current heating, a registered contractor, approval before work starts).

Price source: Canadian Climate Institute and Dunsky, Heat Pumps Pay Off (2023 dollars, modelled for Vancouver, Edmonton, Toronto, Montréal and Halifax). Rebates: our verified program data, checked monthly. Always confirm the exact amount for your home.

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What Oshawa's winter means for your heat pump

In Oshawa, the average January low is -7°C, and the coldest temperature recorded from 2015-2024 was -25°C. That's milder than 30% of the 123 cities we track. Choose a cold-climate model, and compare heating output at -20°C, not just at mild temperatures. Keeping some backup heat for rare deep-cold snaps is common and sensible.

Source: Open-Meteo historical weather data, 2015-2024.

Before you hire a heat pump installer

  1. Ask for a room-by-room heat loss calculation. A quote that guesses the size from square footage alone is a red flag.
  2. Ask for the exact model and its heating output at your area's coldest temperature, not just the brand.
  3. Ask who handles the rebate paperwork and whether the model is on your rebate program's eligible list.

Before you call anyone, check what heat pump rebates you can get in Oshawa. Many programs require approval or a registered contractor before work starts.

Planning more upgrades? See the top-rated insulation installers, home battery installers in Oshawa.

See every rebate in Oshawa

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