I recently began renting a home that uses a gas furnace to heat it. I've never used gas heat before and had some questions about filtering the air. If I understand correctly the furnace has a filter that may need cleaning or replacing that is directly attached to the furnace. My question is should I also filter the cold-air return that is on the first floor of my home? Also near the air-return is another large grate that to me seems to serve no purpose, (ie, no air seems to move through in either direction) could I cover that large, ugly grate with a rug?
- posted
18 years ago