- Installing a new hydronic heating system as a primary or secondary heating source
- Altering, extending or replacing components of an existing hydronic system
Hydronic Permits
Hydronic heating systems including radiant floor heat, baseboard loops and other hot water-based heat distribution systems require permits and inspections to ensure they meet Alberta's Safety Codes and best practice standards. Proper permitting helps protect occupants, support energy compliance and ensure safe operation of boiler, piping and heat delivery systems.
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?
Hydronic permits must be obtained by a licensed mechanical or plumbing contractor; homeowners may only apply if they hold the appropriate certification.
- 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
- Hydronic system schematic showing boilers, pumps, expansion tanks, mixing valves and controls
- Piping layout including loop lengths, spacing and support details
- Equipment specifications for boilers, manifolds, panels and baseboards
- Combustion air, venting and boiler room layout if the system is gas-fired
- Heat loss summary or design calculations
- 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 $110.00 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 – before piping is concealed or slab is poured (for radiant floor systems)
- Final – once all components are installed, operational and connected per design criteria
You must schedule inspections at least one business day in advance. Please schedule using the eInspections portal.
FAQs
Do I need a separate permit if hydronic work is part of a larger renovation?
Yes. Hydronic heating installations and significant alterations require a dedicated hydronic permit, even if another building permit is used for general construction.
Are hydronic permit applications reviewed differently than standard plumbing?
Hydronic permits often require additional design documentation (e.g., schematic, heat loss, loop layouts) than basic plumbing permits to ensure safe and efficient performance.
What happens if piping is covered without inspection?
If work is covered without inspection, you may need to uncover piping for re-inspection, which could lead to re-inspection fees and project delays.
Can a homeowner submit a hydronic application?
Only if local policy allows and the homeowner meets qualification requirements; otherwise a licensed contractor should apply.
Related Links
Contact Us
City Hall
910 4 Avenue South
Lethbridge, AB T1J 0P6
Phone: 311
or 403-320-3111 (if outside of Lethbridge)