Is your garage a sauna half the year and an icebox the other half? In this video I break down the 7 best AC options for a garage based on real summer testing—what actually cools a harsh, leaky garage space, what wastes power, and what turns your shop into a damp greenhouse. I cover everything from swamp coolers (and why they only make sense in bone-dry climates) to portable ACs with heat, dehumidification, smart controls, and the ducting designs that make or break performance. My biggest takeaway: portable AC physics matters. Single-hose units can create negative pressure and pull hot air right back in through garage-door gaps, which kills efficiency. That’s why the Midea Duo’s hose-in-hose design impressed me so much—plus inverter tech that kept temps steady while using less electricity. But my #1 pick was the SereneLife 3-in-1 because it’s pure, brute-force reliability in a workshop environment: strong cooling, legit dehumidification, a solid fan mode, and rugged build quality that doesn’t feel delicate around tools, dust, and daily use.