Pool Heater & Heat Pump Service on Long Island

10 companies offering heaters & heat pumps, each with a Nassau or Suffolk County license we checked on Sep 24, 2026.

About this service

Gas heaters and electric heat pumps both need occasional repair and eventually replacement. Some Long Island companies are authorized service centers for specific brands, and utility rebates may be available for qualifying heat pump installations — ask the installer.

Questions to ask before you hire

  • Which heater and heat pump brands do you service?
  • Do you handle utility rebate paperwork for heat pumps?
  • Is there a diagnostic fee, and is it credited toward the repair?
  • Do you offer emergency service in season?
10 licensed companies

Advantage L.I.

Holbrook, NYServes Suffolk15+ years in business

License verified
  • Openings & closings
  • Heaters & heat pumps
  • Leak detection
  • New pool construction

Towns: Holbrook, Port Jefferson Station, Coram, Farmingville, Miller Place +4 more

Agape Pools

Long Island, NYServes Nassau & Suffolk25+ years in business

License verifiedOnline bookingEmergency service
  • Weekly pool service
  • Openings & closings
  • Liner replacement
  • Heaters & heat pumps
  • Salt water systems
  • New pool construction
  • +1 more

Empire Pools, Inc.

Holbrook, NYServes Nassau & SuffolkEst. 1998

License verifiedPrices publishedOnline bookingEmergency service
  • Weekly pool service
  • Openings & closings
  • Liner replacement
  • Heaters & heat pumps
  • Salt water systems
  • Leak detection
  • +2 more

Towns: Amityville, Westbury, Baldwin, Miller Place, South Setauket

Pool openingfrom $285 + tax

Majestic Pool Service

Bay Shore, NYServes Suffolk25+ years in business

License verifiedOnline booking
  • Weekly pool service
  • Openings & closings
  • Liner replacement
  • Heaters & heat pumps
  • Leak detection
  • Safety covers

Towns: Bay Shore, West Islip, Babylon, Lindenhurst, Deer Park +6 more

Marlin Pools, Inc.

Holbrook, NYServes Nassau & Suffolk30+ years in business

License verified
  • Weekly pool service
  • Openings & closings
  • Liner replacement
  • Heaters & heat pumps
  • Salt water systems
  • Leak detection
  • +3 more

Pool Doctor

East Northport, NYServes Nassau & Suffolkover 50 years in business

License verifiedRetail store
  • Weekly pool service
  • Openings & closings
  • Liner replacement
  • Heaters & heat pumps
  • Salt water systems
  • New pool construction
  • +1 more

Poolmasters of Long Island

Bellmore, NYServes Nassau30 years in business

License verifiedOnline bookingRetail store
  • Weekly pool service
  • Openings & closings
  • Liner replacement
  • Heaters & heat pumps
  • Salt water systems
  • Safety covers

Towns: Bellmore

Pro Tech Pools

Miller Place, NYServes Suffolk30+ years in business

License verifiedOnline booking
  • Weekly pool service
  • Openings & closings
  • Heaters & heat pumps
  • Salt water systems
  • Leak detection
  • Safety covers

Towns: Miller Place, Shoreham, Wading River, East Northport, Dix Hills +6 more

Sky Blue Pools

Deer Park, NYServes Nassau & SuffolkEst. 2004

License verified
  • Weekly pool service
  • Openings & closings
  • Liner replacement
  • Heaters & heat pumps
  • Leak detection
  • New pool construction
  • +1 more

Towns: Bayville, Oyster Bay, Mill Neck, Locust Valley, Glen Cove +15 more

Also confirm the county license is current before you sign. Every company above shows its license number and the date we checked it.

Other pool services on Long Island