That's why we heavily scrutinized some of the most popular portable AC units across budget tiers, room sizes, and feature ...

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I purchased a 15,000 BTU Air Conditioner in April 2023. Then I purchased a 5 year warranty in February of 2024. This year the AC is no longer blowing cold air.

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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.