Saint-Isidore (Municipality): Permits and Regulations | Heat pump or air conditioning unit

Permits and regulations applicable to HVAC work

Municipality of Saint-Isidore

Local regulatory framework to be aware of before any HVAC project

In Saint-Isidore, work related to air conditioning , heating , heat pumps , and ventilation is governed by detailed municipal regulations. These rules aim to ensure the safety of occupants, the tranquility of the neighbourhood, the protection of the built environment, and the harmonious integration of mechanical equipment into residential, commercial, and institutional properties.

Before undertaking an HVAC project, it is essential to fully understand these obligations. This document has been designed to provide comprehensive, structured, and accessible information to the residents of Saint-Isidore, enabling them to plan their projects in an informed manner, while knowing how AirGreen can support them at every stage.


Municipal permits applicable to HVAC work

General principle of permit requirement

In Saint-Isidore, any intervention that alters the state of land, a building, or an existing structure is considered a development . As such, the installation of fixed HVAC equipment, such as:

  • a wall-mounted or central heat pump,

  • an outdoor air conditioner

  • a mechanical ventilation unit,

  • a stationary generator connected to a heating system,

is generally subject to obtaining a planning permit , and sometimes also a building permit depending on the nature of the work.

It is strictly forbidden to start or continue work until the required permits have been issued by the competent authority.

Cases where a permit is required

A permit is required in particular when:

  • the equipment is permanently installed on the ground or on the building;

  • the installation modifies the existing layout or the external appearance of the building;

  • work is carried out on the foundations, walls, roof or ground;

  • the equipment is visible from the public road or located near the property boundaries.

Even when the installation may seem minor, municipal regulations consider the majority of HVAC systems as accessory constructions or installations that must be authorized.

Consequences of a permit obtained after the start of work

When work is undertaken without a permit and an application is submitted afterwards:

  • the applicable fees may be doubled;

  • the municipality can demand corrective measures;

  • Administrative or financial penalties may be imposed.

It is therefore strongly recommended to check the requirements before any intervention.


Validity, duration and conditions of the permit

Deadlines to be met

A development permit issued in Saint-Isidore is valid subject to the following conditions:

  • the work must begin within a maximum period of six (6) months following the issuance of the permit;

  • the work must not be interrupted for a continuous period of twelve (12) months.

If these conditions are not met, the permit may expire, requiring a new application.

Renewal of the license

An expired permit can, in certain cases, be renewed without additional fees, provided that:

  • the authorized works have not been modified;

  • the project remains compliant with the regulations in force at the time of renewal.


HVAC equipment installation guidelines

Location of outdoor units

Outdoor air conditioning and heat pump units are subject to specific rules aimed at limiting visual, noise and functional impacts on neighboring properties.

Minimum required distances

At Saint-Isidore:

  • the devices must be installed at least 2 meters from any side or rear ground line;

  • This distance aims to prevent neighborhood conflicts, facilitate maintenance, and ensure adequate air circulation.

Relationship to the main building

Accessory HVAC equipment must:

  • remain directly attached to the main building they serve;

  • be installed at a reasonable distance from the building, without exceeding the limits set by regulations;

  • respect the prescribed margins, even when the land is small.

Visual integration and screens

When a device is visible from the street or from a neighboring property, it is generally required to:

  • plan for a fence, hedge or permanent plant screen;

  • use a discreet and durable solution;

  • avoid any installation that would detract from the aesthetics of the area.

These measures help to maintain the visual harmony of the neighborhood while protecting the equipment.


Noise standards applicable to HVAC systems

Principle of noise pollution

In Saint-Isidore, excessive noise is considered a nuisance. HVAC systems must be chosen, installed, and used in such a way as not to disturb the peace and quiet of the neighborhood.

Noise thresholds to be respected

The applicable rules require that:

  • the noise level generated by a heat pump, air conditioner, fan or filtration system does not exceed 50 dB(A) when measured at the boundary of the property;

  • This measure applies under normal conditions of use;

  • Noise must be assessed according to a standardized method over a specified period.

Case of co-ownerships

In condominium buildings:

  • the boundary of the land generally corresponds to the portion of the land reserved for the exclusive use of the unit concerned;

  • Each co-owner remains responsible for complying with the noise limits applicable to their installation.

A non-compliant device may need to be moved, modified or replaced in order to reduce nuisances.


Permitted hours for HVAC work

Time restrictions

Construction, installation or repair work that generates noise is subject to strict time limits:

  • Work is prohibited between 9 p.m. and 7 a.m .;

  • This prohibition applies equally to buildings and to mechanical equipment or vehicles used for the work.

Limited exceptions

Only certain emergency work, carried out to ensure the safety of the premises or people, may be authorized outside of these hours. Apart from these specific cases, adherence to the hours is mandatory.


Responsibilities of the owner or occupant

Regulatory responsibility

In Saint-Isidore, the responsibility for compliance rests primarily with the building owner or occupant. This includes:

  • obtaining the required permits;

  • compliance with the rules regarding location, noise and development;

  • obtaining the necessary authorizations from the condominium association or neighbors, when the situation requires it.

Unless otherwise clearly stated in the contract, these steps remain the responsibility of the client.

Support provided by AirGreen

As part of an HVAC project in Saint-Isidore, AirGreen can:

  • explain the municipal requirements applicable to your situation;

  • to guide you in identifying the required permits;

  • recommend technical solutions that are compliant and adapted to your site;

  • coordinate the facilities in compliance with local regulations.

This support aims to simplify your project, without transferring a heavy or complex administrative burden to you.


Sanctions and consequences for non-compliance

Failure to comply with municipal regulations may result in:

  • notices of non-compliance;

  • daily fines that can accumulate as long as the situation persists;

  • the obligation to correct, move or remove illegally installed equipment;

  • direct intervention by the municipality, with the costs being billed to the owner.

These measures aim to ensure fairness between citizens and respect for the living environment in Saint-Isidore.


In summary: planning an HVAC project compliant with Saint-Isidore

Before undertaking any air conditioning, heating, heat pump, or ventilation work in Saint-Isidore, it is essential to:

  • check if a permit is required;

  • respect the prescribed installation distances and margins;

  • ensure that the equipment complies with the permitted noise levels;

  • schedule the work during permitted hours;

  • to assume its responsibilities regarding municipal compliance.

AirGreen operates within this regulatory framework and can assist you in ensuring that your HVAC project is carried out in a compliant, safe and sustainable manner, while respecting the specific requirements of the municipality of Saint-Isidore.

Warning

This section has been prepared solely for the reader's convenience and has no official or legal value. No guarantee is given as to the accuracy of the text. For all legal purposes, the reader should consult the official version of the bylaw and each of its amendments or obtain a certified copy from the city clerk.

---UPDATE: January 12, 2026---