- Installing or replacing furnaces, boilers, or air handlers
- Installing or replacing air conditioning systems (central AC)
- Adding or modifying ductwork
- Installing heat pumps or hybrid heating systems
- Installing or modifying venting or combustion air
- Installing make-up air units or exhaust systems
- Altering an existing HVAC system as part of a renovation or addition
HVAC Permits
Heating, Ventilation, and Air Conditioning (HVAC) systems play a critical role in comfort, energy efficiency, and indoor air quality. HVAC permits ensure that systems are installed safely and meet the requirements of the Alberta Building Code, Alberta Gas Code, Plumbing Code, and the Safety Codes Act.
Before beginning construction, review the information on this page to ensure your project meets all requirements and that you have applied for the necessary permits.
When do you need a permit?
HVAC permits must be obtained by a licensed mechanical contractor; homeowners may only apply if they hold the appropriate trade certification.
An HVAC permit is required when you install, replace, or alter a heating, ventilation, or air conditioning system in a residential or commercial building. Gas-fired HVAC equipment also requires a gas permit, obtained by a certified gasfitter. Also, electrical work associated with HVAC systems requires a separate electrical permit.
- Routine maintenance or servicing that does not alter the system
- Replacing filters, thermostats, or minor components without system changes
How to apply?
You can apply online through eApply or in person at City Hall.
Your application should include:
- Property address and description of work
- Type and size of HVAC equipment being installed
- Manufacturer specifications (BTU rating, efficiency, venting requirements)
- Duct layout or system design (for new or modified systems)
- Contractor name and license number
- Gas and electrical permit numbers (if applicable)
Complex systems or commercial projects may require engineer stamped drawings.
Permit Fees
- Residential: minimum permit fee of $110.00 plus applicable Safety Codes Council levy. Fees increase based on the total construction value.
- Commercial: minimum permit fee of $250.00 plus applicable Safety Codes Council levy. Fees increase based on the total construction value.
- Additional fees may apply for trades (plumbing, electrical, HVAC), or re-inspections
Inspections
Inspections are required at key stages of construction:
- Rough-in (ducting, venting, combustion air before concealment))
- Final (equipment installed and operational)
You must schedule inspections at least one business day in advance. Please schedule using the eInspections portal.
FAQ's
Do I need separate permits for HVAC, gas, and electrical work?
Yes. Mechanical (HVAC), gas and electrical work each require their own permits and inspections, even when completed as part of the same project.
Do I need a permit to replace my furnace or air conditioner?
Yes. Replacing HVAC equipment requires a permit and inspection.
Do heat pumps require a permit?
Yes. Heat pumps are regulated mechanical systems and require a HVAC permit.
Contact Us
City Hall
910 4 Avenue South
Lethbridge, AB T1J 0P6
Phone: 311
or 403-320-3111 (if outside of Lethbridge)