How Long Does a Furnace Filter Last?
A furnace has never been more important as the world continues to see harsher temperatures, like colder winters.
Understanding the Differences in MERV Ratings
Pick up an air filter at the hardware store and you may notice that it has a "MERV" rating on it. You may be wondering "What is MERV?" It's a rating system developed by ASHRAE to provide consumers with a way to measure air filter efficiency.