How to Make a FILTER RACK in a Plenum or Duct so that

How to Replace HVAC Furnace Filter metal furnace filter slot cover Contractor's Assistant: Did you check the furnace's filters? I only have the one filter The old one is out but a piece of the cardboard edge metal slot filter slot is almost always on this return air side (the suckie side, not the blowie side

metal furnace filter slot cover Leaving the filter slot This entry was posted in Conservation, HVAC and tagged air filter, dirty filter, furnace filter by Inoue