How Often Should Dryer Vents Be Cleaned?

The Standard Recommendation

The National Fire Protection Association (NFPA) recommends that dryer vents be professionally cleaned at least once per year. This guideline applies to standard residential use — one to two loads of laundry per day in an average household. Annual cleaning maintains safe airflow, reduces fire risk, and keeps your dryer operating efficiently.

This recommendation is the minimum, not an optimal target for all households. Your actual cleaning frequency should reflect your usage level and vent system characteristics.

When You Need More Frequent Cleaning

Several factors call for cleaning more often than once a year. Large households doing 3 or more loads daily should schedule cleaning every 6 months. If you have pets whose fur gets into laundry, lint accumulates faster and more densely. Older homes with longer vent runs accumulate lint faster per load. Commercial operations — laundromats, apartment buildings — typically need cleaning every 3 to 6 months.

If your LG, Samsung, or other smart dryer has been displaying flow sense or airflow warnings, that's a more reliable indicator than any time-based schedule.

How to Know When Your Vent Needs Attention

Don't rely entirely on a calendar schedule. Watch for practical signs that cleaning is due: clothes taking longer than one cycle to fully dry, the laundry room feeling notably hotter than usual during drying, the exterior vent flap not moving freely when the dryer runs, or a musty or burning smell during drying.

Any of these symptoms means the vent needs attention now — regardless of when it was last cleaned.

Building a Cleaning Schedule

The simplest approach for most Bloomington homeowners: schedule professional dryer vent cleaning once a year, in the same month each year. Pick a month that works for your schedule and book it consistently. This removes the guesswork and ensures you never go significantly longer than 12 months without cleaning.