Advantage L.I.
- Openings & closings
- Heaters & heat pumps
- Leak detection
- New pool construction
Towns: Holbrook, Port Jefferson Station, Coram, Farmingville, Miller Place +4 more
10 companies offering heaters & heat pumps, each with a Nassau or Suffolk County license we checked on Sep 24, 2026.
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.
Towns: Holbrook, Port Jefferson Station, Coram, Farmingville, Miller Place +4 more
Towns: Amityville, Westbury, Baldwin, Miller Place, South Setauket
Pool openingfrom $285 + tax
Towns: Bay Shore, West Islip, Babylon, Lindenhurst, Deer Park +6 more
Towns: Bellmore
Towns: Miller Place, Shoreham, Wading River, East Northport, Dix Hills +6 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.