Est-ce qu'un échangeur d'air peut causer de la condensation?
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Can an air exchanger cause condensation?

Air Exchangers and Condensation: An In-Depth Exploration by AirGreen

As one of Montreal's leading HVAC solution providers, AirGreen often receives queries about the phenomenon of condensation in relation to air exchangers. The question, "Can an air exchanger cause condensation?" is quite common and this article aims to address this issue in detail.

Understanding Air Exchangers and Condensation

An air exchanger plays a pivotal role in managing the indoor air quality of your home by continuously replacing stale indoor air with fresh outdoor air. This process also involves regulating the humidity levels inside the home, which is where condensation comes into play.

Condensation occurs when the water vapor in the air cools down and changes back into liquid form. This usually happens when warm, moist air comes into contact with a cooler surface, such as a window on a cold day.

Can an Air Exchanger Cause Condensation?

An air exchanger, when working correctly, should help manage the humidity levels in your home, reducing the chances of excessive condensation. However, certain circumstances could lead to condensation problems, and it's crucial to understand why this happens:

1. Incorrectly Sized Air Exchanger

If your air exchanger is not properly sized for your home, it can lead to an imbalance in humidity levels, which could in turn, cause condensation. It's important to consult with HVAC professionals, like our team at AirGreen, to ensure that your air exchanger is the right size for your space.

2. Improper Installation

Improper installation of your air exchanger could also contribute to condensation issues. Ensuring that the installation is done correctly, with proper ventilation and control settings, is key to preventing unnecessary condensation.

3. Lack of Maintenance

Regular maintenance is critical to the efficient operation of your air exchanger. Neglecting maintenance can lead to issues, including improper humidity control, which can cause condensation.

Addressing Condensation Issues with AirGreen

If you're facing condensation issues, despite having an air exchanger installed, it's important not to ignore it. Here's how AirGreen can help:

1. Inspection

Our HVAC professionals can carry out a thorough inspection of your air exchanger and your overall HVAC system to identify any issues that may be causing the condensation.

2. Adjustments and Repairs

Based on our inspection, we can make necessary adjustments or repairs to ensure that your air exchanger is operating efficiently and managing humidity levels effectively.

3. Regular Maintenance

We offer regular maintenance services to keep your air exchanger in peak condition, helping to prevent issues such as excessive condensation.


While an air exchanger can, under certain circumstances, contribute to condensation issues, it's important to remember that a properly installed and maintained unit should help manage humidity levels, not exacerbate them. If you're dealing with persistent condensation issues, don't hesitate to reach out to the professionals at AirGreen. With our expert advice and quality services, we can help ensure that your air exchanger contributes to a comfortable, healthy, and condensation-free home environment.