Tent air conditioners are more powerful than any fan or other cooling device you could bring to a campsite. While technically capable of operating off-grid, most tent air conditioners are large, heavy, and require a lot of electricity. PowerMost tent air conditioners require a relatively large amount of electricity to cool down your tent. I also recommend looking for tent air conditioners with a “sleep” or “eco” setting, so you have a low-volume option at night. Exhaust and Drain HosesLike all portable air conditioners, tent A/C units feature an exhaust hose to blow hot air out of your space.