Gas Furnace Reliability | Most Reliable Gas Furnaces Check the filter. If you’re getting low airflow, check the air filter on the furnace. A clogged filter could cut airflow down to a trickle. The highly rated 3M Filtrete 1900 MPR, $20, traps dust better than the usual furnace filter, so it can also help clean the air. Check it monthly, and replace when dirty.
When performing regular air duct maintenance, a professional can remove biological pollutants and fix seals to keep out contaminants. Take a look at this AC repair infographic for tips to help you improve your home’s indoor air quality.