Lee Wallender is a home improvement writer of nearly 20 years and specializes in home remodeling, repair and maintenance. Cassidy was an updates editor whose main responsibility is to write and edit ...

Installing a window air conditioner is a sweaty job, so you might be tempted to simply open the window, boost the air conditioner into place, close the window, and hope for the best. Not a good idea, ...

The best window AC units of 2026 from brands like LG and Windmill can help you ride out even the most brutal heat waves.

We got our hands on multiple units and looked for models that are quiet, energy-efficient, and easy to install.

Q: I am renting a small, old home without central air conditioning. I have a window air conditioner, and the past few years I’ve awkwardly filled in the space around it with a large piece of plywood.

Portable ACs can work with casement windows but need a special adapter to seal the vent properly. Casement windows' swing and lack of flat windowsill make them incompatible with most window unit ACs.

These compact air conditioners provide quick relief from the heat without making you break a sweat to get them installed.

Split AC vs window AC: Which one should you choose while keeping electricity consumption, installation and price in mind.

This saddle-style air conditioner preserved my window view and cooled a 300-square-foot bedroom quickly.

Installing a window air conditioner is typically a straightforward DIY process that can quickly transform a muggy room into a much more comfortable space. If you have any questions about your specific ...