While this portable air conditioner barely made a difference in my medium-sized living room during testing, it managed to drop the temperature in my small bedroom by 6 degrees, more than enough to ...

Simply installing a bigger air conditioner might sound like a solution to the problem. Not so, according to Reinhard Radermacher, a professor of mechanical engineering at the University of ...

If you can’t figure out how old the air conditioner is, or the seller doesn’t know when they bought it, you should at least try to make sure it doesn’t use R-22. What else to look for ...

If you’re in the market for a premium portable air conditioner, you’ll find none better than the Whynter ARC-1230WN, which earned top marks in our larger tested review of the best portable AC ...

Amazon knocked down even more prices on top-rated air conditioners. Keep scrolling to see more of these Fourth of July deals, including a now-$48 mini air conditioner that fits on a bedside table.

Evaporative coolers also cool the air, but they use a different process than air conditioner units. Also called a swamp cooler, an evaporative cooler uses water and a fan to lower the temperature ...

If your home is among the 91% of homes in the U.S. with an air conditioner – according to the U.S. Census – you want to know the answer to that question before the heat of summer begins to ...

It's easy to view an air conditioner as a set-it-and-forget-it appliance, but these workhorse machines require regular cleanings to lower the risk of mold buildup. But if you're like most people ...

Unusual Noises Coming From AC In normal situations, an air conditioner should not make too much noise. If you hear any loud, buzzing, rattling or other unusual noises, contact an HVAC repair person.

Because an air conditioner can only cool your home down to 15 to 20 degrees Fahrenheit below the temperature outside, blasting the AC at a much lower temperature in hopes of cooling the space ...