The best window air conditioners are powerful, quiet, energy efficient and easy to install. Our top picks for 2025 include models from LG, TCL, Whirlpool and more.

Window-mounted AC units come in various sizes and cooling capacities, ranging from about 5,000 to 25,000 BTU (British thermal units). As a general rule, you need about 20 BTU of cooling for every ...

Most window AC units range from 2,000 to 25,000 BTU. However, most units over 15,000 BTU will require a dedicated 230V power line, like those used by electric dryers.

During our hunt for the portable AC, Target was selling (and quickly selling out of) a bare-bones 5,000-BTU window unit for $110. We got the 8,000-BTU Frigidaire on sale for $260 at Best Buy; it ...

It's critical to get the right size when buying a window air conditioner. Consumer Reports explains how to do it. Plus, the best small, midsized, and large window AC units.

In this case [Lou] used a pretty beefy $600, 24,000 BTU window unit that should be good for about 1200 sqf (~111 m 2) . Most of the modifications are pretty straightforward, ...