Why does my AC get warm when I accelerate?

Many vehicles deliberately cut the AC compressor out for a few seconds under hard acceleration to free up engine power — that's normal and the cold comes right back. What isn't normal is warm air during light, everyday acceleration or the cold never returning. That points to a compressor clutch slipping under load, a worn or glazed serpentine belt squealing as the compressor loads up, or a system running high head pressure because it's overcharged or the condenser is blocked.

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