Permit Required? Always Required
Typical Fee Range $200–$1,500 Duct work modifications may add fees
Fee Method Flat/valuation-based by equipment type
Apply Online Apply at NYC Department of Buildings →

What's Required in New York City

  • All HVAC system installations and replacements require a mechanical permit
  • Work must be performed by a NYC-licensed HVAC contractor
  • Equipment must be Energy Code compliant (NYC Energy Conservation Code)
  • Duct penetrations through fire-rated assemblies require fire-stopping
  • Rooftop equipment requires structural verification and may need an Alt-2
  • Refrigerant handling must comply with EPA Section 608 regulations

How to Get a HVAC Permit in New York City

1

Choose Licensed Contractor

NYC requires all HVAC work to be performed by a licensed master plumber (for radiant heat) or licensed HVAC contractor. Verify at nyc.gov/buildings.

2

File Mechanical Permit

Contractor files a mechanical permit via DOB NOW. Equipment specs and load calculations are typically required.

3

Equipment Delivery & Installation

Post permit on-site. HVAC equipment must meet NYC Energy Code efficiency requirements.

4

Rough-In Inspection

DOB or third-party inspector checks ductwork, refrigerant lines, and penetrations before walls are closed.

5

Final Inspection & Certificate

Final inspection confirms system operation, thermostat settings, and code compliance. Certificate of completion issued.

Frequently Asked Questions

Yes. Replacing a central air conditioning system or adding a new HVAC unit (beyond a simple window AC) requires a mechanical permit in NYC. Window air conditioners in an existing sleeve typically do not require a permit.
NYC HVAC permits typically cost $200–$1,500 depending on the scope of work. Simple equipment replacements are on the lower end; full system installations with new ductwork are on the higher end.
Mini-split installations require a permit in NYC because they involve electrical work (dedicated circuit) and refrigerant handling. Your HVAC contractor should file the permit as part of the installation.