How do I check if my HRV is working properly?

Your HRV (Heat Recovery Ventilator) should run continuously or on a schedule to maintain proper indoor air quality. Start by checking if you can hear it running - there should be a gentle humming sound from the unit, typically located in your basement or utility room.

Visual and operational checks are the easiest way to assess your HRV's performance. Look at the unit itself - you should see indicator lights showing it's powered on, and if it has a digital display, check that it's showing normal operation. Feel for airflow at both the fresh air intake (usually on an exterior wall) and the stale air exhaust. You should feel air being drawn in from outside and air being pushed out. Check that the outdoor intake and exhaust vents aren't blocked by snow, leaves, or debris - this is especially important during Ottawa winters.

Filter condition is critical for proper HRV operation. Most units have filters that should be checked monthly and replaced every 3-6 months depending on usage and air quality. Dirty filters will reduce airflow and efficiency significantly. Also inspect the heat recovery core (the heart of the system) - it may need cleaning annually. Some cores can be gently rinsed with water, while others require professional cleaning.

In Ottawa's climate, your HRV works harder during extreme temperatures. During winter, you might notice some frost buildup on the outdoor exhaust - this is normal, but excessive ice blocking the vent indicates a problem. If your home feels stuffy, has excess humidity, or you notice condensation on windows despite running the HRV, these could be signs the system isn't working effectively.

If you notice reduced airflow, unusual noises, or the unit isn't maintaining proper humidity levels, it's time for professional service. HRV systems require annual maintenance to ensure optimal performance and indoor air quality. For a thorough HRV inspection and tune-up, request a quote from Ottawa HVAC Pro - we service all major HRV brands and can ensure your system is protecting your family's health and comfort.