Permit Required? Required
Typical Fee Range $100–$250 Standard residential fee for replacing furnaces, A/C units, or heat pumps.
Fee Method Flat rate
Apply Online Apply at Metro Nashville Codes Department →

What's Required in Nashville

  • A mechanical permit is required for replacing any heating or cooling unit.
  • Must follow current 2026 Tennessee energy efficiency standards for SEER/HSPF ratings.
  • Proper secondary drain pan and safety float switches required for attic installs.
  • Manual J load calculations required for new system sizing to ensure proper capacity.
  • Condenser units must be anchored and meet property line setbacks.
  • Must be performed by a licensed Mechanical/HVAC contractor.

How to Get a HVAC Permit in Nashville

1

Step 1: Contractor Check

Verify the HVAC contractor is licensed and registered with Metro Codes.

2

Step 2: ePermits Application

Submit a 'Mechanical' permit application via the online portal.

3

Step 3: Fee Payment

Pay the flat permit fee ($100 minimum typical) online.

4

Step 4: Installation

Complete the install ensuring all safety controls and vents meet code.

5

Step 5: Inspection

Schedule a final mechanical inspection via the portal.

Frequently Asked Questions

Standard residential replacement permits start around $100.
Only if the project valuation exceeds $15,000 for residential equipment.
Yes, as an owner-occupant, but you must still pull a permit and pass inspection.