View Single Post
  #66   Report Post  
Posted to alt.home.repair
TimR[_2_] TimR[_2_] is offline
external usenet poster
 
Posts: 1,526
Default Use 1" furnace filter instead of 5" ?

The purpose of the filter is to protect the equipment, not the people. You want to keep the coils clean.

The air that hits the filter comes from inside the house. You've already breathed it.