Have the same unit, and it works very well. Whenever I come into the shop, it goes on, set timer case I forget to turn it off later. I got the washable filter so I can get it really clean. Mostly I just blow out the filter and put it right back in. Depending upon what I am doing, it may be every day or at least every couple days.
Wisdom: Where experience and knowledge combine and become one.
"We are all one decision away from Stupid!!"
"How often we sacrifice the permanent plans of God on the altar of immediate solutions"
I have a very good memory, just short is all.