If your AC is more than 7-10 years old, chances are it’s struggling to keep up with the heat. Energy consumption: Older window ACs consume ... they distribute air evenly, ensuring that no ...

“This is due to how much an air conditioner can vibrate, and how those vibrations spread to the window—where an old, ill-fitting sash may make more vibrational noise than a new, tight-fitting ...

By Daniel Bortz Updated by Kala Herh The best window air conditioners we tested can reduce the room’s temperature by 10 degrees in less than 15 minutes. • When to Replace Your Old Air ...