12000 BTU 4-in-1 Air Conditioner with Heat Function

The Costway 12000 BTU 4-in-1 is a year-round portable air conditioner for medium UK rooms of 20-25m², combining cooling, heating, dehumidifying and ventilating in one floor-standing unit. With 12,000 BTU of cooling it has the muscle to bring a warm living room or large bedroom back to comfort, while the 9,500 BTU heat function covers shoulder-season chills so it earns its keep beyond summer. App, panel and remote control all feature, and the WiFi app means you can start cooling before you get home. A 29 L/day dehumidifier mode tackles damp, and a sleep mode shifts the set temperature by 1°C each hour to stop you waking cold overnight. Being a single-hose monobloc, it does need venting: the supplied exhaust hose and window kit route warm air outside through a window, so it is not a hoseless unit. At ≤65 dB on full it's audible, better suited to living spaces than light-sleeper bedrooms. Drainage is handled via the included pipe. At 30kg with recessed handle and wheels it rolls between rooms. The box includes hose, connector, window kit and adapter, drainage pipe, remote and manual.