Permit Required? Required
Typical Fee Range $189–$350 Fuel gas piping systems cost $189; individual appliances (AC/Heat Pump) cost $69 each.
Fee Method Flat rate
Apply Online Apply at Philadelphia Department of Licenses and Inspections →

What's Required in Philadelphia

  • Mechanical/Fuel Gas permit (MP) required for all HVAC and appliance installations
  • Separate $189 fee for fuel gas piping systems and equipment
  • Air conditioning units, boilers, and heat pumps cost $69 per appliance
  • Contractors must have an active Mechanical or Plumbing license in Philadelphia
  • Manual J load calculations may be required for new system sizing
  • Final mechanical inspection required to verify exhaust and safe fuel connections

Do You Need a Permit to Replace an AC or Furnace in Philadelphia?

Yes. Philadelphia treats HVAC replacement as permit-required work, and that includes the common case people hope is exempt: a like-for-like swap of a furnace, AC condenser, or heat pump in the same location. Permit fees typically run $189–$350, and the permit is issued by the Philadelphia Department of Licenses and Inspections. In practice your HVAC contractor pulls it as part of the job — if a bid doesn't mention the permit, ask why, because unpermitted mechanical work surfaces at home sale time and in insurance claims.

HVAC Repairs vs. Replacement: Where the Permit Line Falls

The line falls at equipment, not maintenance. Repairs that keep an existing system running — a blower motor, capacitor, control board, or a thermostat swap on existing wiring — generally don't need a permit. Replacing the equipment itself, adding or reworking ductwork, or running new gas or electrical almost always does. Refrigerant-line and coil replacements sit in the gray zone and vary by city. When the scope is unclear, describe the exact job to the Philadelphia Department of Licenses and Inspections before work starts; it's a five-minute call.

How to Get a HVAC Permit in Philadelphia

1

Step 1: Contractor eCLIPSE Check

Confirm your HVAC contractor is registered and active in the eCLIPSE system.

2

Step 2: Submit MP Application

The contractor applies for a Mechanical/Fuel Gas permit online.

3

Step 3: Detail Units

List all appliances (boilers, AC, etc.) to calculate the $69 per unit fees.

4

Step 4: Fee Payment

Pay the total permit fee via the eCLIPSE portal ($189 minimum for piping).

5

Step 5: Final Inspection

Schedule the mechanical inspection once the system is fully operational.

Frequently Asked Questions

Yes, a mechanical permit for the appliance ($69) and potentially for gas piping ($189) is required.
Minimum fees start at $189 for gas piping or $69 per simple appliance replacement.
No, mechanical work involving fuel gas piping must be performed by a licensed professional.
Adding or altering ductwork is mechanical work that typically requires a permit in Philadelphia. Confirm the scope with the Philadelphia Department of Licenses and Inspections before starting.