These types of projects require a Mechanical Permit:
Any new construction
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.
Installing or replacing any flue or new vent associated with mechanical equipment
Replacing any furnace, hydronic piping (hot water piping), or its associated ductwork
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.