Heat pumps in Mont-Saint-Grégoire: permits and bylaws
Planning a heat pump or an air conditioner in Mont-Saint-Grégoire? 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.
Allowed, at least 1.5 m from the property lines.
At least 1.5 m from the property lines, hidden by landscaping.
Not allowed in the front yard.
Not specified in the bylaw: confirm with urban planning.
Allowed if it blends with the building’s architecture and is not visible from the street.
Good to know, and who to call.
Good to know
- Seasonal units (window air conditioners) are not covered by these rules.
- Zone Ra-11: heat pumps must be screened from the street and public spaces.
- Requests by form emailed to the inspector (permis@mmsg.ca).
The short answers.
Do you need a permit to install a heat pump in Mont-Saint-Grégoire?
Not specified: heat pumps are not listed in the permits bylaw. Confirm with urban planning.
How far from the lot lines must the unit be?
At least 1.5 m from the property lines.
Can a heat pump go in the front yard?
No. Not allowed in the front yard.
What is the noise limit?
Nuisance bylaw 2021-281: no decibel figure for heat pumps.
Who should I call to confirm before the work?
Amélie Séguin, municipal and building inspector, 450 347-5376, ext. 26, permis@mmsg.ca.
Read at the source.
Sources: Zoning bylaw 2009-185, s. 10.1 and 15.2; permits and certificates bylaw 2009-188, s. 5.1 and 6.1 (zoning: updated June 16, 2026; permits: updated September 2026).
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 Mont-Saint-Grégoire?
We come and see your property, and the estimate is free.