Heat pumps in Deux-Montagnes: permits and bylaws
Planning a heat pump or an air conditioner in Deux-Montagnes? 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 m from the lot lines and no more than 2 m from the house.
At least 1 m from the lot lines and no more than 2 m from the house.
Not allowed in the front yard. Allowed in the secondary front yard of a corner lot, 1 m from the lot lines.
Not specified for a house (classes H1 to H3): confirm with urban planning.
Not specified for a house (classes H1 to H3): confirm with urban planning.
Good to know, and who to call.
Good to know
- Quality-of-life bylaw 1392 sets 55 dB at the property line; the stricter zoning bylaw sets 50 dBA.
- Buildings in classes H4 to H8: in the front yards, only on a balcony.
- Window air conditioners are not allowed in a new building.
The short answers.
Do you need a permit to install a heat pump in Deux-Montagnes?
Not specified in the permits bylaw: confirm with urban planning.
How far from the lot lines must the unit be?
At least 1 m from the lot lines and no more than 2 m from the house.
Can a heat pump go in the front yard?
No. Not allowed in the front yard. Allowed in the secondary front yard of a corner lot, 1 m from the lot lines.
What is the noise limit?
Over 50 dBA at the lot lines, measured 1.5 m above the ground: not allowed.
Who should I call to confirm before the work?
Urban planning and environment department, 450 473-2796, option 3, urbanisme@ville.deux-montagnes.qc.ca.
Read at the source.
Sources: Zoning bylaw 1733, s. 109 and 147 (table 5); permits and certificates bylaw 1735, s. 65 (table 1) and 76-77 (table 2); quality-of-life bylaw 1392, s. 7.4 (zoning 1733: consolidated July 13, 2026; permits 1735: consolidated June 4, 2026; checked September 30, 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 Deux-Montagnes?
We come and see your property, and the estimate is free.