Permit Required? Required
Typical Fee Range $125–$250 A $35 base fee plus individual unit/appliance fees and 20% same-day review surcharge.
Fee Method Flat rate
Apply Online Apply at Denver Community Planning and Development →

What's Required in Denver

  • A permit is required for any replacement of an AC unit, furnace, or boiler.
  • Must follow current Denver Energy Code standards for SEER and efficiency.
  • Proper secondary drain pan and safety float switches required for attic installs.
  • High-efficiency furnace venting must be verified through the chimney or side-wall.
  • Condenser units must meet property line setbacks (typically 3–5 feet).
  • Must be performed by a licensed Mechanical contractor or owner-occupant.

How to Get a HVAC Permit in Denver

1

Step 1: Check Efficiency Ratings

Ensure the new unit meets current Denver Energy Code minimums.

2

Step 2: Quick Permit Application

Submit a 'Mechanical Quick Permit' application via Denver E-Permits.

3

Step 3: Fee Payment

Pay the permit fee ($125 minimum total typical).

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 $125.
Yes, all residential boilers require a mechanical permit in Denver.
Yes, as an owner-occupant, but you must still pull a permit and pass inspection.