Permit Required? Required
Typical Fee Range $110–$200 A standard mechanical permit for a residential AC or furnace replacement starts around $105 plus the 5% technology fee.
Fee Method Flat rate
Apply Online Apply at City of Dallas Development Services Department →

What's Required in Dallas

  • Permit required for any replacement of a furnace, condenser, or evaporator coil
  • The contractor must hold a valid State of Texas ACR license and be registered with Dallas
  • Manual J and Manual S calculations may be required for new system sizing
  • Proper secondary drain pans and float switches are required for attic installations
  • Mechanical ventilation (fresh air intake) must comply with 2021 IRC/IMC
  • Final inspection required to verify refrigerant line insulation and duct sealing

How to Get a HVAC Permit in Dallas

1

Step 1: Contractor Check

Confirm your HVAC professional is registered with the City of Dallas.

2

Step 2: Submit Mechanical Application

The contractor typically submits this via the eServices portal under 'Trade Permits'.

3

Step 3: Instant Approval

Most replacement HVAC permits are issued immediately after electronic payment.

4

Step 4: Installation

Replace the unit according to code, ensuring proper clearance and drainage.

5

Step 5: Mechanical Inspection

Schedule an inspection once the unit is operational to verify safety and code compliance.

Frequently Asked Questions

Yes, both the outdoor condenser and indoor furnace/air handler require a mechanical permit.
The standard mechanical fee is $110.25 (including tech fee).
Only if you are a licensed HVAC technician; homeowners are generally not permitted to perform high-voltage or refrigerant work themselves.