Heat pumps in Mont-Saint-Hilaire: permits and bylaws
Planning a heat pump or an air conditioner in Mont-Saint-Hilaire? 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 1.5 m from the lot lines, with a screen if visible from the street.
At least 1.5 m from the lot lines, with a screen if visible from the street.
Not allowed in the front yard (only in the secondary front yard of a corner lot).
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
- Corner lot: allowed in the secondary front yard, 1.5 m from the lot lines, with a screen if visible from the street.
- Not allowed on or under a carport.
- An insulated wooden sound barrier (max. 3 m wide and 2 m high) may be installed on the lot.
The short answers.
Do you need a permit to install a heat pump in Mont-Saint-Hilaire?
Not on the list of work needing a permit: confirm with urban planning.
How far from the lot lines must the unit be?
At least 1.5 m from the lot lines.
Can a heat pump go in the front yard?
No. Not allowed in the front yard (only in the secondary front yard of a corner lot).
What is the noise limit?
55 dB by day and 50 dB at night, at the lot line.
Who should I call to confirm before the work?
Land-use planning and environment department (SATE), 450 467-2542, clic@villemsh.ca.
Read at the source.
Sources: Zoning bylaw 1235, s. 139 (table 3.3) and s. 153; bylaw 1362 on the administration of planning bylaws, s. 3.1.2 (table 1) (zoning: consolidated May 26, 2026; bylaw 1362: consolidated May 12, 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-Hilaire?
We come and see your property, and the estimate is free.