Top-Rated Heat Pump Installers in Islip, NY

12 local companies ranked by 2,979 Google reviews. Free to compare, no sign-up.

Ratings collected September 2026 · Page updated September 30, 2026

12Companies
2,979Google reviews
4.9★Average rating
Sep 2026Data collected
Ranked by Google reviewsNever paid forFree to compare

Short answer: The top-rated heat pump installers in Islip are Cool Power LLC (5.0★, 704 reviews), Wilson's Plumbing Heating HVAC & Electric (5.0★, 289 reviews), Dashing Dan's Plumbing & Heating Inc. (4.9★, 943 reviews).

Heat Pump installers in Islip, ranked 12 listed

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  1. 1
    Cool Power LLCTop pickHighest rating (50+ reviews)
    5.0 (704 Google reviews)
    75 Air Park Dr, Ronkonkoma, NY 11779
    Call (631) 759-8169WebsiteGoogle reviewsProfileDirectionsEmail [email protected]
  2. 2
    Wilson's Plumbing Heating HVAC & ElectricTop pick
    5.0 (289 Google reviews)
    1062 Udall Rd, Bay Shore, NY 11706
    Call (631) 855-5832WebsiteGoogle reviewsDirectionsEmail [email protected]
  3. 3
    Dashing Dan's Plumbing & Heating Inc.Top pickMost reviews
    4.9 (943 Google reviews)
    258 Higbie Ln, West Islip, NY 11795
    Call (631) 587-5236WebsiteGoogle reviewsDirectionsEmail [email protected]
  4. 4
    Clean wave heating and cooling
    5.0 (71 Google reviews)
    1669 N Thompson Dr, Bay Shore, NY 11706
    Call (631) 565-0944WebsiteGoogle reviewsProfileDirectionsEmail [email protected]
  5. 5
    K.S Mechanical Services | Air Conditioning | Boiler Repair | Furnace Repair
    4.9 (152 Google reviews)
    481 Johnson Ave Ste e, Bohemia, NY 11716
    Call (631) 889-3617WebsiteGoogle reviewsDirectionsEmail [email protected]
  6. 6
    Christopher's Heating & Air Conditioning Inc
    4.9 (117 Google reviews)
    1557 5th Ave, Bay Shore, NY 11706
    Call (631) 639-8666Google reviewsDirections
  7. 7
    RK Heating & Cooling Services Inc
    5.0 (39 Google reviews)
    20 Juniper St, Central Islip, NY 11722
    Call (631) 575-5824WebsiteGoogle reviewsDirectionsEmail [email protected]
  8. 8
    Jay's Air Conditioning & Heating
    4.9 (78 Google reviews)
    1431 Pine Dr, Bay Shore, NY 11706
    Call (631) 383-6429WebsiteGoogle reviewsDirectionsEmail [email protected]
  9. 9
    MSD Heating & Cooling, Inc
    5.0 (37 Google reviews)
    3 Champlin Ave, East Islip, NY 11730
    Call (631) 813-6909WebsiteGoogle reviewsDirectionsEmail [email protected]
  10. 10
    Groner Service Heating and Cooling
    4.8 (347 Google reviews)
    2100 Arctic Ave, Bohemia, NY 11716
    Call (516) 935-8484WebsiteGoogle reviewsDirections
  11. 11
    Ducold Mechanical Ltd.
    5.0 (29 Google reviews)
    230 Norma Ave, West Islip, NY 11795
    Call (631) 518-3671WebsiteGoogle reviewsDirectionsEmail [email protected]
  12. 12
    Yas Hvac Corporation
    4.8 (173 Google reviews)
    25 Union Ave, Ronkonkoma, NY 11779
    Call (631) 656-3313WebsiteGoogle reviewsDirections

Together these 12 companies average 4.9★ across 2,979 reviews. Dashing Dan's Plumbing & Heating Inc. has the most reviews (943).

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 Islip

Typical installed priceabout $17,500 to $20,700

For a typical 3-ton system ($5,830 per ton for ductless up to $6,914 per ton for ducted). Your home may cost more or less.

Rebates open in IslipNone confirmed right now

Financing or future programs may still help. Check the rebate page before you sign.

Price source: Massachusetts Residential Heat Pump Invoice Cost Study, based on real Mass Save and MassCEC invoices (January 2024 dollars). Rebates: our verified program data, checked monthly. Always confirm the exact amount for your home.

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What Islip's winter means for your heat pump

In Islip, the average January low is -2°C (29°F), and the coldest temperature recorded from 2015-2024 was -18°C (-1°F). That's milder than 69% of the 123 cities we track. Winters here are mild enough that most cold-climate heat pumps can heat your whole home. Sizing and installation quality matter more than squeezing out extra cold-weather rating.

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 Islip. Many programs require approval or a registered contractor before work starts.

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

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