Heat pumps in Lachine: permits and bylaws
Planning a heat pump or an air conditioner in Lachine? 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 the property lines.
At least 2 m from the property lines.
Not allowed in the front yard: allowed only at the rear and on the side.
Wall-mounted or split unit on a balcony: 85 × 40 × 100 cm or less.
Not specified in the bylaw: confirm with urban planning.
Good to know, and who to call.
Confirm before the work
The official bylaw prevails. A quick call to the borough settles any doubt before you order the unit.
The short answers.
Do you need a permit to install a heat pump in Lachine?
No permit.
How far from the lot lines must the unit be?
2 m minimum.
Can a heat pump go in the front yard?
No. Not allowed in the front yard: allowed only at the rear and on the side.
What is the noise limit?
No figure published by the borough for heat pumps.
Who should I call to confirm before the work?
311 (514 872-0311 from outside Montréal).
Read at the source.
Sources: City of Montréal, “Obtenir un permis pour installer une thermopompe ou un appareil de climatisation”, Lachine section; zoning bylaw 2710 (page updated August 3, 2026).
Checked by AirGreen on September 30, 2026.
This page is a summary. The official bylaw prevails. Confirm with the borough before the work.
A heat pump project in Lachine?
We come and see your property, and the estimate is free.