The TCL TAC-12CHPB/NZW is a powerful 12,000 BTU portable air conditioner that works all year round. As a true 4-in-1 it cools in summer, warms with efficient heat-pump heating in cooler months, and also runs as a fan and a dehumidifier — so one unit handles every season. No fixed installation: wheel it where you need it and vent through the window.