Just as Canadians have adapted to rugged winters, so have our homes. One key part of this adaptation is the use of Heat Recovery Ventilator (HRV) systems. While HRVs are beneficial year-round, they’re especially helpful for maintaining indoor air quality when winter hits the prairies.
Join the Weiss-Johnson team as we explore all about how simple HRV maintenance is during the winter. Read on!
What is an HRV System?
HRV systems are becoming increasingly common in homes across Canada and are now considered an essential part of modern HVAC systems. While they may not get the same spotlight as furnaces and air conditioners, HRV systems are relied upon by many to keep clean, fresh air circulated throughout the home.
HRVs work by drawing out stale indoor air through the exhaust while fresh outdoor air is brought in through the supply stream. Both of these airflows are cycled through the heat exchanger, where the exhaust air absorbs heat from the supply air before being cycled out. The process happens in reverse during the winter, when the incoming supply air absorbs heat.
Tip #1: Clean Your Filters & Core Regularly
We can’t stress enough just how important it is to clean your HRV’s air filters regularly once winter arrives. After all, once dips to -20 °C, opening the window isn’t everyone’s first choice! During these periods, your HRV works overtime to bring in fresh air while venting out dry, stagnant air.
Over time, this naturally leads to dirt, debris, and dust clogging up the HRV’s filter. During winter, clean your air filter at least once every two months. The exchange core should also be cleaned, typically at least twice a year as well. With this simple HRV maintenance task, your system won’t need to work as hard and your air will be fresher—it’s a win-win.
Here’s a quick step-by-step guide to cleaning an HRV filter:
- Fully turn off the HRV’s power (including unplugging it)
- Open the access panel
- Remove the filters. You’ll also find the core here.
- Vacuum off the larger dust particles
- Once the majority of the dust has been removed, run the filters through warm (not hot) water with some dish soap.
- Let it dry fully before putting it back
Tip #2: Check the Outdoor Intake and Exhaust
Both the exhaust and fresh air intake connect to outdoor hoods, usually located somewhere on the house’s side. These vents are crucial to your HRV system, and any blockages can strain your system, not allowing it to run at full capacity consistently.
When it rains, it pours. In Alberta, when it snows, it stays. In winter, make it a habit to regularly check your HRV’s outdoor vents for ice and snow. If you notice any buildup on or around your vents, simply clear it away with a brush. Though just a small HRV maintenance task, it makes a significant difference in system efficiency.
Tip #3: Don’t Neglect Annual Inspections
While basic HRV maintenance is key to keeping your system in proper working order, it’s no substitute for professional servicing. Like every other HVAC system in your home, an HRV should be professionally inspected and serviced on a regular schedule. Professional HRV tune-ups and inspections will include things like cleaning (and replacing, if needed) the core and filters. It also includes tasks best left to HVAC professionals, such as airflow balancing and cleaning the drain system.
Stay Warm with Weiss-Johnson
Remove guesswork from your home and HRV’s maintenance schedule this winter. Reach out to us today to learn more about our comprehensive HRV maintenance—and beyond! See why Weiss-Johnson has been trusted by Edmonton homeowners for generations, and join the 100,000 satisfied customers we’ve proudly served over the years.
