HVAC companies in Setauket- East Setauket, NY 11733
6 HVAC companies, with local market data for this ZIP.
General contractors 18HVAC 6Concrete and masonry 3Electricians 3Other construction trades 2Remodeling 2Roofing and exteriors 2
Area profitability, HVAC62 / 100Strong market, crowded field
Typical home value$874,000+8.3% in the past year
New homes permitted, 20251,399Suffolk County
Homeowners85.0%6,073 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
All Island MechanicalHVAC contractor · 3250 Nesconset Highway, Setauket- East Setauket(631) 471-5000 · allislandmechanical.com · 2 drivers, 2 trucks
Diamond Comfort Systems CorpHVAC contractor · 34 A Ridgeway Ave, Setauket(631) 246-9595 · diamondcomfortsystemscorp.com
Shona Mechanical, Inc.HVAC contractor · 37 Stadium Blvd, East Setauket(631) 675-0609 · shonamechanical.com
Mcintosh Plumbing & Heating IncHVAC contractor · East Setuaket(631) 689-3702 · 2 drivers, 2 trucks
Sunset MechanicalHVAC contractor · 21 Watson Ln, East Setauket(631) 941-4328 · 1 driver, 1 truck
WHM Plumbing & Heating ContractorsHVAC contractor · East Setauket(631) 473-3568 · 2 drivers, 2 trucks
HVAC in ZIP 11733 at a glance
Local building angle: Suffolk County permitted 1,399 new homes in 2025, including 287 apartment units. 9% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.