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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 ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Tim Heffernan Tim Heffernan is a writer who covers air and water quality and ...

The forced-air heating and cooling systems that keep our homes comfortable year-round require very little maintenance. In most cases, all you must do to keep the equipment operating at peak efficiency ...

Given that the average person in the U.S. spends 90% of their time inside, indoor air quality can have a significant impact on overall health and well-being. But many people overlook one common ...