The Best Furnace Advice: Change the Filter
The Family Handyman
Clogged air filters are usually to blame when a furnace stops working. Dirty air filters are also hard on blower motors and heat exchangers, so it’s a good idea to replace your air filter before there’s a problem. It can be hard to remember to check it regularly. That’s where an air filter gauge can help; it eliminates guesswork by measuring airflow and telling you exactly when it’s time to change your air filter. Here are 10 home maintenance tasks you definitely don’t want to forget.