I'm replacing two bathroom fans. Both have runs about 25ft to the gable wall. I'd prefer to not run them vertical through the roof if I can avoid this. Accessing side wall where soffit vents are is pretty much impossible d/t cramped space/roofing nails protruding.
Is a 20ft horizontal run too far? (80cfm and 110cfm fans)
The roof does have some vents at the top. They'd be about 10 foot run, but they aren't termination vents. Previous homeowner vented to these with 3" PVC, ending with a 90deg bend facing toward said vent. Could I vent through these or is that frowned upon?
Clothes taking longer to dry?
Clean the dryer screen in HOT water if using fabric softener sheets.
They leave a residue that impedes air-flow, costing you money.
Clean the ducting in the last six months? 17,000 dryer fires annually!