When a dryer duct run is too long for the dryer’s own blower — common in condos and townhomes where the laundry sits far from an outside wall — building code requires a booster fan: an in-line fan partway down the duct that kicks in when the dryer runs and pushes the air the rest of the way.
Every gram of lint your dryer exhausts passes through that fan. The wheel loads up, the housing collects lint, and the pressure switch that tells the fan when to run can clog to the point where the fan stops engaging at all. A failed booster fan quietly turns a code-compliant duct run into a restricted one — and most owners have no idea the fan exists until then.
What we service
We clean the fan wheel and housing, check and clean the pressure switch or sensor, clean the ducting on both sides of the fan, service any secondary lint trap, and confirm the fan actually engages when the dryer runs. Booster fan service is included in our building-wide strata dryer vent programs and can be combined with a standard dryer vent cleaning for individual suites.
If the fan has failed outright, we document it clearly so you can arrange replacement — and we’ll tell you honestly whether the symptoms you’re seeing are the fan or simply a duct that needs cleaning.