Bought this dryer on June 8th. No dog has ever completely dried them out. I only used it for fluff and face. Never run for more than 5-10 minutes at a time. I estimate the total usage time since purchase to be less than 4 hours. Filter always kept clean. He died yesterday. Began to lose strength, smelling hot, spattering black particles at my white dog. No warnings, just happened in a few seconds. Very disappointed