HVAC CONTRACTORSRONKONKOMA5 LISTED
Let your fingers do the walking.NASSAU · SUFFOLK · NYC EDGE

HVAC Contractors in Ronkonkoma, NY

5 hvac businesses with a listing in Ronkonkoma, NY. Listed A to Z. Nobody pays to sit higher.

A
Accu-Temp Heating & Cooling INc.
Ronkonkoma, NY(631) 615-7255
HEATING & COOLING
Airmax Long Island, Inc.
Ronkonkoma, NY(631) 737-5566
HVAC
B
Burner King
Ronkonkoma, NY(631) 738-9279
HEATING EQUIPMENT INSTALLATIONS OIL • GAS • CONVERSIONS • HOT WATER HEATERS OIL TANK ABA…
I
Industrial Refrigeration Inc.
Ronkonkoma, NY(631) 913-0261
DESIGN • INSTALLATION • ENGINEERING • SERVICE
M
MICHAEL JAMES
Ronkonkoma, NY(631) 231-3434
Heating, ventilation & air conditioning (HVAC) design-build, installation, maintenance…

Permits, licensing & utilities

Official sources for Ronkonkoma, NY. Links go to the agency's own page. Last checked September 2026.
Suffolk County Office of Consumer Affairs
Home improvement, plumbing & electrical licensesOpen →
Suffolk County Department of Health Services
Septic / I/A systems, water-quality reviewsOpen →
Suffolk County Water Authority
Water service, backflow requirements (Suffolk)Open →
PSEG Long Island
Electric service, new connections, outagesOpen →
National Grid — Long Island (gas)
Gas service, meter work, gas emergenciesOpen →
Dig Safely New York — Call 811
Required before excavation; free utility mark-outOpen →

Which town am I in?

Long Island addresses use hamlet names (e.g. "Hicksville") but permits come from the town (Oyster Bay) or an incorporated village. If you're not sure, look up the address on the county assessor's site or ask the town clerk before you file.

Other trades in Ronkonkoma

Air Conditioning5
Plumbing4
Restoration3

All 26 businesses in Ronkonkoma · All HVAC Contractors on Long Island & NYC