Clearing Dryer Vents in Spanish Fork Houses

Why the newer houses are worse

In an older Spanish Fork home the laundry is often on the main floor against an outside wall, and the duct is a short straight run through the wall. Those are easy and they rarely cause trouble. The subdivisions built over the last couple of decades put the laundry upstairs in the middle of the floor plan, which means the duct travels a long way, turns several corners and climbs before it exits at a roof or gable vent.

Every one of those turns is a place where lint drops out of the airflow and stays. The run is too long for a household vacuum to reach and too concealed to inspect, so it fills quietly over years. That is the condition behind most dryer fires: not a fault in the appliance, but a duct that stopped being a duct.

How you can tell before it becomes serious

Clothes taking two cycles to dry is the classic sign, because a restricted duct means the moisture has nowhere to go. A laundry room that gets hot and humid while the dryer runs is another. So is a burning smell, a dryer that shuts itself down on a thermal cutout partway through a load, and an exterior vent hood whose flap no longer opens when the machine is running.

What we do

Rotary brushing on flexible rods from both ends where access allows, run with vacuum extraction so the lint leaves the house rather than being pushed into the wall cavity. We check the exterior hood and free the flap, since a stuck flap defeats the whole exercise, and we look at the transition hose behind the appliance because a crushed or foil-concertina hose can be the entire problem on its own.

On the exposed side of town the vent hoods also collect wind-blown grit and, in winter, they can partially ice at the flap. That is worth checking on a house that takes the canyon wind directly, because a hood that cannot open turns a clean duct into a blocked one within a season.