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

To help you make an informed decision, we'll compare portable and window ACs and highlight their main features so you can decide what makes sense for you.

The Frigidaire Inverter Window Room Air Conditioner (FHWW145WE1) is the best air conditioner for large rooms, decreasing our sizable test room by four degrees in an hour and featuring an easy setup.

With its powerful 8,000-BTU rating, this LG window air conditioner provides impressive cooling functions with minimal noise. It can cool rooms up to 340 square feet and has customized cooling ...

Black + Decker BPACT10WT Portable Air Conditioner Best for smaller rooms, this model has a maximum cooling setting of 65 degrees, and it simultaneously dehumidifies the air for a more comfortable ...