Best budget window air conditioner: Amazon Basics air conditioner (5,000 BTU) Best suited for smaller rooms and households on a budget, the Amazon Basics air conditioner doesn't offer a lot of ...

For a small bedroom, home office, or guest room, ranging from 100 to 250 square feet, look for an air conditioner with a capacity of 5,000 to 6,500 Btu. You’ll also want one with strong scores ...