Dryer Vent Cleaning & Fire Safety
Dryer fires are a leading cause of residential fires in Ontario and across Canada — and dryer vent lint accumulation is the primary cause. This isn't a cleaning issue; it's a fire safety issue, and it deserves the same attention as working smoke detectors and furnace maintenance.
How Lint Builds Up
Every load of laundry releases lint from fabrics — most is caught by the lint trap (which you clean after every load — you do clean it after every load, right?), but a portion bypasses the trap and travels through the vent duct to the exterior. Over months and years, this accumulation narrows the duct and eventually can reach a concentration where the heat of normal dryer operation is sufficient for ignition.
Signs Your Vent Needs Cleaning
- Clothes take longer than one cycle to dry
- The dryer feels unusually hot to the touch during operation
- The laundry room feels hot and humid when the dryer runs
- The exterior vent flap doesn't open fully during dryer operation
- A burning or musty smell during drying
DIY vs. Professional
For short dryer ducts (under 5 feet from dryer to exterior) in straight runs, a dryer vent cleaning kit (available at Canadian Tire Ontario, ~$30–$40) handles the job. For longer runs, elbows in the duct, or any duct running through walls or floors, professional dryer vent cleaning is the appropriate approach. Professional dryer vent cleaners in Ontario typically charge $80–$150 for a cleaning.
Frequency
Annual inspection and cleaning is recommended for most Ontario households. For households that do 10+ loads of laundry per week or use the dryer for bulky items like pet bedding or towels frequently, twice-yearly cleaning is prudent.