For example, a 12,000-BTU air conditioner that uses 1,200 watts of electricity has an EER of 10. Generally speaking, window AC units typically have ratings between 8 and 12.

10 best portable air conditioners to cool your home, tried and tested Move one of these portable ACs between rooms to circulate an icy breeze ...

Amazon has highly rated air conditioners for small, medium and large rooms from brands like Frigidaire, LG and Black+Decker.

The DuraComfort 8,000 BTU Portable Air Conditioner is on sale at Walmart for 37% off, and shoppers say it cools a room "effortlessly." ...

Plugging these seven devices into an extension cord may lead to dangerous outcomes, an expert warns.

The Ktaxon 12,000 BTU Window Air Conditioner is now on sale for $292. Shoppers enjoy the app-based controls and say it's extremely energy efficient.

Nearly 2 million of these air conditioners were sold at Costco, Home Depot, and more. Here's why they are recalled, model numbers and what to do.

Line Blaster 8500 BTU Portable Air Conditioners with Dehumidifier & Fan 12% OFF This three-in-one unit combines cooling, dehumidifying and fan functions for rooms up to 450 square feet.

The Tolsprint 5100 BTU Portable Air Conditioner is just $196 while this Walmart Flash Deal lasts, $224 down from its usual $420.

"People just buy a 5,000 BTU air conditioner, because it's $99 on sale, and they think it's going to cool off (their home) and it does not," according to Martinez.