While shopping for your ductless air conditioner, you may see “SEER” with a number next to it. SEER stands for seasonal energy efficient ratio, which measures how much energy your air conditioner uses ...

and my bedroom window won't accommodate a window air conditioner. So, I turn to portable air conditioners to make summer sleeping bearable. My favorite is the Friedrich Zoneaire Portable Air ...

some apartment buildings have banned the use of window air conditioners. A portable unit might also be a better — or your only — option if your windows are too small or don’t open correctly ...

Picking the best window ACs for small, midsized, and large rooms ensures you don’t spend more than you need to You should ...

Window ACs are better at cooling, cost less, and are more energy efficient. If you need more convincing, I compare portable air conditioners vs. window air conditioners. The bottom line Though it ...

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 Conditioner • ...