Portable Air Conditioner Class A+ 7000 BTU Crystal MK2 Certified Refurbished - Good

For bedrooms and small rooms, the EcoAir Crystal MK2 7000 BTU is one of the most efficient portable air conditioner UK choices in this range. Its 7,000 BTU (2.0 kW) output suits spaces up to 16m², and an A+ energy rating means it draws as little as 0.51 kW per hour — so at ~26p/kWh an hour of cooling typically costs only around 13-18p at the lower draw. That low running cost is the headline here, alongside genuine 4-in-1 flexibility: cooling, dehumidifier, fan and sleep modes from a single 29kg wheeled unit. You get a wireless remote, an LED control panel, three fan speeds with auto mode and a 1-24 hour timer with memory, plus self-diagnosis and auto restart for hands-off reliability. Crucially, this one ships ready to install: the box includes the air conditioner, wireless remote, window seal kit and exhaust hose. As a monobloc it vents warm air out of a window via that single hose — there's no ventless shortcut. Certified refurbished and priced at £299.99, the Crystal MK2 pairs A+ efficiency with bedroom-friendly sizing for buyers who care about both comfort and their electricity bill.