1. A puff of dust when the system starts
If you see dust drift out when the furnace or AC kicks on — or grey shadows around the vent covers — there's buildup inside.
2. You dust, and it's back tomorrow
Shelves and screens that need wiping again a day later often mean the ducts are recirculating dust faster than you can remove it.
3. A stale or musty smell
A musty odour when the system first runs usually points to dust and moisture inside the ducts — especially common in basements and humid regions.
4. Some rooms never feel right
Restricted ducts can leave the rooms farthest from the furnace colder in winter and warmer in summer than the rest of the house.
5. You've just renovated
Return vents pull renovation dust straight into the system, where it settles and sticks. A post-renovation cleaning clears it out, and Brush Cleaning handles the stuck-on layer.
6. Your home is brand new
New builds often hold a surprising amount of construction dust. Families in fast-growing areas like Brampton, Surrey and Calgary are often shocked by what comes out the first time.
7. Nobody knows when they were last cleaned
If the answer is "never" or "no idea" — especially in a home you've just bought — it's time. Here's how often ducts should be cleaned.
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