Product review (3 stars): cart ahead of the horse
I ordered the filter and bacteria treatment then took old unit to shop for cleaning. to my dismay the motor bearings were packed with lint, after comple disassembly and cleaning the motor would work but the control panel failed..
  One other review advised duct taping a regulat furnace filter on the back of unit in place of the inadequate furnished filter which I now see would have been an excellent idea..
  I use the bacteria treatment as additive to my large pot of water on top of woodstove so not all was lost..
  Mike