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 ...

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If you’ve ever replaced the water filter in your refrigerator, you know they don’t come cheap. Some cost as much as $60, which means that if you follow directions and change your filter every six ...

Gas and diesel engines still power most vehicles and look poised to be with us for some time to come, even if their dominance is waning. Any engine that develops its power from burning fuel depends on ...

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 ...

If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. The best air purifiers suck up particles, filter the ...