Residential Mechanical Permit

  1. Projects Requiring Mechanical Permits
  2. Required Inspections
  3. Scheduling Inspections

You need a mechanical permit when:

  • Installing new mechanical equipment (e.g. new air conditioner, heat pump, furnace, etc.).
    *Exception: When replacing a like for like electric heat pump, permits are not required.
  • Replacing any furnace, hydronic piping (hot water piping) or its associated duct work.
  • Installing or replacing any flue or new vent associated with mechanical equipment.
  • Replacing an existing furnace with one that utilizes a different fuel.

Note: A chimney reline requires a building permit, not a mechanical permit. If the mechanical work involves gas, a gas permit will also be required. If the mechanical work involves electrical work, an electrical permit will also be required.