Permits and Regulations for the Installation of a Heat Pump or Air Conditioning Unit in Mercier–Hochelaga-Maisonneuve
Understanding local requirements before your HVAC work
At AirGreen , we believe that a successful heat pump installation is based on careful planning and full compliance with municipal regulations. In the Mercier–Hochelaga-Maisonneuve borough, the installation of a heating, ventilation and air conditioning (HVAC) system, whether it is a wall-mounted heat pump or an air conditioning unit , must comply with specific standards set out in the urban planning by-law .
This guide presents the essential rules in force so that your project is fully compliant with municipal requirements.
Permits Required for an HVAC Installation
No permit required, but standards must be met
In the borough of Mercier–Hochelaga-Maisonneuve , no permit is required for the installation of a heat pump or air conditioning unit, whether permanent or removable .
However, compliance with town planning regulations remains mandatory .
Your device must therefore meet strict criteria regarding its dimensions, location and noise level.
Technical Specifications and Installation Rules
Maximum permitted dimensions
For installation without a permit, the devices must comply with the following dimensions:
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Maximum length: 85 cm
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Maximum width: 35 cm
If your device exceeds these dimensions, specific authorization must be obtained from your district before installation.
Location and number of devices
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Only one device is permitted per dwelling or residence.
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If installed on the ground , the unit must be located at least 1.5 meters from the front property boundaries .
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The top of the appliance must not exceed 1.1 meters from ground level .
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The unit can only serve one dwelling , located on the ground floor or in the basement .
Balcony installation
Installation on a balcony is permitted under certain conditions:
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The device does not exceed the height of the guardrail ;
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Visible pipes and wires must not exceed 50 cm ;
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The unit must be screened from the public highway using a visual screen or vegetation approved by the borough.
Distance from property lines
If the unit is located in a rear or side yard:
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A minimum distance of 1.5 meters must be maintained between the device and the property boundaries.
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In the case of a corner lot (at the intersection of two streets), the rules may vary: it is then recommended to consult the permit counter before any installation.
Noise Regulations
The noise level generated by your air conditioning unit, heat pump or filtration system must remain within the following limits:
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Between 7 a.m. and 10 p.m.: 55 decibels maximum
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Between 10 p.m. and 7 a.m.: 52 decibels maximum
These thresholds aim to preserve the quality of life and acoustic comfort of the neighborhood.
AirGreen recommends opting for certified quiet models to ensure lasting compliance.
Special Cases and Exceptions
Heritage buildings
Properties located in a heritage area or classified as buildings of interest may be subject to additional restrictions .
Before any installation, it is essential to check the specific regulations applicable to your building with the district.
Tips for a Compliant Installation
Best practices recommended by AirGreen
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Always confirm distances with property boundaries before starting work.
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Choose a location that minimizes the visual and noise impact on neighbors.
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Check the electrical compatibility of your installation (certain circuits require an inspection or permit from Hydro-Québec).
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Keep all technical documentation and installation photos in case of a municipal audit.
Your Responsibility / Our Support
Your Responsibility
It is important to note that compliance with current regulations, permits and standards remains the responsibility of the customer .
Although we at AirGreen are always available to provide guidance and advice, it is your responsibility to ensure that your project complies with local requirements and that all necessary permits have been obtained before work begins .
Unless otherwise stated in our contract, the responsibility for obtaining permits and ensuring the compliance of the installation lies with the customer .
Our Support
At AirGreen , we believe that a successful installation requires transparency and compliance .
Our team guides you, informs you and supports you in understanding the administrative procedures linked to your HVAC project.
We help you identify applicable obligations and communicate effectively with municipal services when necessary.
If you have any questions, please don't hesitate to contact us —we're here to make your experience simple, clear, and compliant .
Next Step!
At AirGreen , we support our customers at every stage of their process for compliant, safe and sustainable HVAC installations .
Contact us today for personalized advice and compliant installation in Montreal, Laval, Longueuil, on the North Shore and the South Shore .