Heat pumps in Saint-Louis: permits and bylaws
Planning a heat pump or an air conditioner in Saint-Louis? Here is what the bylaws say: the permit, the distance from the lot lines, where the unit can go and the noise limit. It all comes from the official texts.
Five spots, one answer for each.
Each answer is the bylaw rule, in short. “Not specified” means the text does not say: ask urban planning.
At least 2 m from every lot line.
The bylaw contradicts itself: s. 16.4.2 allows heat pumps in the side yard, s. 16.8 requires the rear yard. Confirm with urban planning.
Not allowed in the front yard.
Not specified in the bylaw: confirm with urban planning.
Not specified in the bylaw: confirm with urban planning.
Good to know, and who to call.
Good to know
- Air conditioners are also listed among the equipment allowed in the side and rear yards (s. 16.4.2).
- The inspector sees people by appointment on Mondays and Tuesdays.
The short answers.
Do you need a permit to install a heat pump in Saint-Louis?
Certificate of authorization required before installation (free). Published fee: Free.
How far from the lot lines must the unit be?
At least 2 m from every lot line.
Can a heat pump go in the front yard?
No. Not allowed in the front yard.
What is the noise limit?
Nuisance bylaw 549-23: no figure for heat pumps.
Who should I call to confirm before the work?
Building and environment inspector, 450 788-2631, ext. 2003, permis@saint-louis.ca.
Read at the source.
Sources: Planning bylaw 389-06 (administrative consolidation), s. 3.27, 16.4.1, 16.4.2 and 16.8; nuisance bylaw 549-23 (administrative consolidation of March 2017).
Checked by AirGreen on September 30, 2026.
This page is a summary. The official bylaw prevails. Confirm with the city before the work.
A heat pump project in Saint-Louis?
We come and see your property, and the estimate is free.