Just realized most techs check the dryer vent wrong, and it's costing customers $150 a visit
I keep seeing guys pull the vent and call it clear just because air blows through, but lint packed along the bottom of the run still cuts flow by half. Had a call in Mesa where the guy before me billed $150 to say it was fine, then the element fried in 3 days. Are you testing with a manometer or just eyeballing it?