Running your furnace, central air, or heat pump probably constitutes a big part of your utility bill. But it’s a small, often inexpensive part—the air filter—that keeps these heating and cooling ...

Brionna is a writer specializing in home improvement, construction, and real estate topics. She leverages her background as a civil engineer and interior decorator as well as her love for ...

Gives you a better idea of when to replace your filter. Easy to install. Well-designed app. Air Quality Monitor works with major smart thermostat brands. Pricey, though it could save you money in the ...