Find a licensed HVAC contractor in Brookhaven, NY

Who licenses HVAC contractors in Brookhaven

• Suffolk's restricted license application lists Oil Burner and HVAC categories under Restricted Plumbing, and an Oil and Gas Burner category under Restricted Electrical.
• Anyone who intends to do electrical, plumbing or duct work in Suffolk homes must also apply for the required licenses among Restricted Electrical (HVAC), Restricted Plumbing (HVAC) and Home Improvement, the county's application says.
• Suffolk's home improvement law covers heating and ventilation ductwork but leaves out work in the electrical and plumbing fields.
• Suffolk charges a non-refundable $200.00 application fee for a restricted license.

State rules and the lookup steps: how to check an HVAC contractor's license.

What the Town of Brookhaven requires

• A construction permit that includes HVAC work must come with the Town's Plumbing-HVAC worksheet.
• When the review calls for it, the Town requires manufacturer specifications for equipment such as HVAC units, boilers, furnaces, water heaters, generators, fireplaces or propane tanks.
• Residential propane tanks of 100 gallons or more need Town Fire Prevention approval.
• An oil-to-gas conversion needs no debris affidavit, and no electrical certificate when it reuses the existing electrical work.

The Town of Brookhaven Building Division handles permits (631-451-8696). Our Town of Brookhaven permit guide covers how to apply, inspections and certificates.

Homes in Brookhaven: what the Census shows

Across the Town of Brookhaven, villages included, the median home was built in 1974, and 23% of homes were built before 1960. Fuel oil heats 52% of occupied homes here, utility gas 33% and electricity 10%. With fuel oil in 52% of homes, ask early what a new system means for the oil tank.

What heating and cooling work costs here

Labor is a large part of any price. Long Island heating, air conditioning and refrigeration mechanics and installers earn a median $77,707 a year, from about $56,620 at entry level to $94,796 with experience. (New York State Department of Labor, wages updated to the first quarter of 2026.) Prices come from written estimates; more in the heating and cooling cost guide.

Before you hire in Brookhaven

• Ask for the license number the work needs here (see who licenses HVAC contractors above), and check it before you sign.
• Ask who files with the Town of Brookhaven Building Division, and who books the inspections.
• Will you do a heat loss or load calculation before you size the new system?
• What happens to the old equipment and to any oil tank, in writing?