Installer une thermopompe dans une maison en rangée : les défis que personne ne vous mentionne
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Installing a Heat Pump in a Townhouse: The Challenges No One Tells You About

At AirGreen, we’ve had the opportunity to install central heat pumps, complete HVAC systems, and wall-mounted air conditioners in many types of properties throughout Montréal, Laval, Longueuil, as well as on the North Shore and the South Shore. Among these installations, townhouses present a unique set of challenges that are rarely addressed by other professionals. While they are very popular in the region, their narrow design, structure, and existing heating system configurations add complexity when installing a heat pump.

In this article, we detail the practical and technical challenges you need to anticipate when considering installing a heat pump in a townhouse, as well as the solutions we offer to ensure an optimal, efficient, and long-lasting installation.

Why Are Townhouses More Complex for Heat Pump Installation?

Townhouses are typically located in densely populated neighborhoods, where each unit shares walls with neighbors. While this reduces energy costs for heating during the winter, it also presents several challenges:

  1. Limited Outdoor Space
    Unlike single-family homes, townhouses often have limited outdoor space. This makes it more difficult to install the outdoor unit of the heat pump. It’s essential to comply with municipal regulations regarding the distance between the outdoor unit and the fence or other neighboring installations.

  2. Ductwork Configuration
    In a townhouse, the duct system is often more restricted and less flexible, which can pose problems when it comes to distributing air effectively throughout the house. The existing configuration may not be ideal for a heat pump, requiring costly adjustments.

  3. Noise and Vibration Issues
    The outdoor units of heat pumps can generate vibrations and noise. In a townhouse, this can lead to disturbances for neighbors. It’s important to select quiet models and install vibration-damping supports to minimize sound impact.

Specific Challenges Encountered During Recent Installations

1. Laval: Installation of a Gree 48,000 BTU Central Heat Pump

In a townhouse located in Laval, we installed a Gree 48,000 BTU central heat pump in a 1,500 sq. ft. space. One of the main challenges was the placement of the outdoor unit, which had to comply with the rules regarding distance from neighboring buildings.

We had to install the heat pump on a flat roof, using an elevated support to maximize system efficiency while staying within regulations. This challenge required specific calculations for air distribution in the ducts to compensate for the proximity of adjacent walls.

2. Montréal: Installation of a Fujitsu KZAH 18,000 BTU Wall-Mounted Heat Pump

During the installation of a Fujitsu KZAH 18,000 BTU wall-mounted heat pump in a townhouse in Montréal, we faced issues with the existing ventilation ducts, which were undersized for the required capacity. To resolve this, we had to reorganize the ducts to ensure proper airflow throughout the house. We also installed a smart thermostat system to optimize temperature management on each floor and reduce energy consumption.

3. Longueuil: Upgrading an Existing System with a Bosch BOVA 36,000 BTU Heat Pump

Another challenge was upgrading an old furnace heating system in a townhouse in Longueuil. The existing system was too outdated to be compatible with the selected central heat pump, requiring a complete overhaul of electrical circuits and plumbing to ensure proper installation.

Solutions We Offer at AirGreen

At AirGreen, we have the experience needed to tackle these unique challenges. Here are some solutions we offer to ensure a successful installation of your central heat pump in a townhouse:

1. Planning and Pre-Installation Study

Before starting any installation, we always conduct a thorough thermal analysis to determine the exact heating and cooling needs of the home. This helps us choose the right heat pump capacity and plan the optimal placement for both the indoor and outdoor units.

2. Ductwork Optimization

When an existing duct system doesn’t meet the needs of a central heat pump, we offer duct optimization solutions to ensure better air circulation. This may involve replacing certain ducts or adding electronic dampers to enhance the system’s energy efficiency.

3. Use of Quiet and Vibration-Damping Technologies

To minimize the impact of noise in townhouses, we use heat pump models designed to be quiet. Additionally, we install vibration-damping supports under the outdoor units to limit disturbances for neighbors and ensure optimal performance.

4. Compliance with Local Regulations

We ensure that the installation complies with all local regulations concerning urban planning and safety, particularly regarding the minimum distance for the outdoor unit from property boundaries. In cases where there are restrictions, we find creative solutions to overcome these obstacles.

Why Choose AirGreen for Your Installation in a Townhouse?

  • Local Expertise: We are well-versed in the challenges of townhouses in the Montréal, Laval, and Longueuil areas.

  • Customized Solutions: We offer solutions tailored to each project, taking into account the specifics of your home and your needs.

  • Regulatory Compliance: We ensure all our installations comply with local regulations and manufacturer requirements.


Conclusion: Installing a central heat pump in a townhouse comes with unique challenges, but with proper planning and the expertise of AirGreen, you can enjoy an efficient, durable, and comfortable heating and cooling system. Contact us for a free quote and benefit from our expertise for your project in Montréal, Laval, Longueuil, the North Shore, and the South Shore.

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