HRV Cleaning in Halifax: How Often Should You Service Your Air Exchanger?
The Quick Answer
Most homes in Halifax and across Nova Scotia should have their HRV (heat recovery ventilator, often called an air exchanger) professionally serviced once a year, with the filters checked every 2 to 3 months. The ductwork connected to the HRV typically needs a deep cleaning every 3 to 5 years, or sooner if you have pets, have recently renovated, or moved into a new build.
What Is an HRV and Why Do Halifax Homes Have One?
An HRV continuously pulls stale, humid air out of your home and brings fresh outdoor air in. As the two air streams pass through the HRV's core, heat from the outgoing air warms the incoming air, so you get fresh air without losing much of the heat you paid for.
Modern Nova Scotia homes are built tight to keep out drafts and cut heating costs. That's great for efficiency, but without mechanical ventilation, moisture, odours, and indoor pollutants have nowhere to go. That's why most newer homes in HRM, from Bedford to Cole Harbour, include an HRV.
Why HRV Maintenance Matters in a Maritime Climate
Our coastal climate is hard on air exchangers:
- High humidity: Damp air means more condensation inside the unit. A clogged condensate drain or dirty core can become a spot for mould and mildew.
- Long heating season: HRVs run year-round, but they work hardest through our long, damp winters.
- Snow, leaves, and salt air: The exterior intake and exhaust hoods can get blocked, which throws the system off balance.
A dirty HRV doesn't just move less air. It can push dust and contaminants back into your living space, which defeats its whole purpose.
Signs Your HRV Needs Cleaning
- Condensation on the inside of windows during winter
- Musty or stale smells that don't go away
- Weak airflow from the HRV supply vents
- Visible dust or grey streaks around vent grilles
- The unit is louder than usual or rattling
- You can't remember the last time it was serviced
What Professional HRV Maintenance Includes
A proper annual HRV service from SweepClean typically includes:
- Inspecting the unit and checking how it's running
- Cleaning or replacing the filters
- Cleaning the heat recovery core
- Checking and flushing the condensate drain
- Making sure the exterior intake and exhaust hoods are clear
- Showing you before and after results
Annual Service vs. HRV Ductwork Cleaning
These are two different services:
- Air Exchange / HRV Annual Cleaning & Maintenance (starting from $129.99): cleaning the unit itself, filters, and core. This is the yearly tune-up.
- HRV / Air Exchange Ductwork Cleaning (starting from $379): a deep cleaning of the ducts that carry air to and from the HRV. This is needed less often, but it's important if the ducts have built up dust, pet hair, or construction debris.
What You Can Do Between Services
- Check the filters every 2 to 3 months and rinse them if your model allows it.
- Clear the outdoor hoods after snowstorms and in the fall when leaves pile up.
- Don't turn it off in winter. Your HRV helps control humidity and condensation during the months your home is sealed up.
- Keep the area around the unit clear so a technician can reach it easily.
Frequently Asked Questions
Can I turn off my HRV to save energy?
It's not recommended. An HRV uses relatively little electricity, and turning it off can lead to excess humidity, window condensation, and stale indoor air, especially in winter.
What's the difference between an HRV and an ERV?
Both bring in fresh air and recover heat. An ERV (energy recovery ventilator) also transfers some moisture between air streams. Both need regular cleaning, and we service both.
Do new homes need HRV cleaning?
Yes. New builds often have drywall dust and construction debris in the ducts and unit. Cleaning soon after moving in is a smart first step.
Book HRV Cleaning in Halifax
SweepClean services HRVs and air exchangers across Halifax, Dartmouth, Bedford, Sackville, Fall River, Cole Harbour, and Eastern Passage, with extended coverage across Nova Scotia. Book online or call +1 (902) 292-9509.