24000 BTU Mini Split AC & Heating System A++ Energy Efficient Inverter AC

The Costway 24000 BTU split air conditioner is the largest unit in this range, an A++ inverter system that cools and heats very large rooms up to 139m² — open-plan living spaces, large studios or commercial rooms. Its 1310m³/h airflow and 58.8L/day dehumidification are the highest here, moving and drying serious volumes of air, while 4D airflow circulates it evenly across the room. The inverter delivers a SEER of 6.1 and SCOP of 5.1, modulating output to maintain temperature efficiently rather than cycling on and off. With a 3400W power input it draws about 3.4kW, costing roughly 88p an hour at around 26p/kWh at full output, though as with any inverter that drops sharply once the large space reaches temperature. Comfort features include 7 modes, 5 fan speeds, a quiet sleep mode, screen-off function, child lock, self-cleaning and auto defrost, with a 24-hour timer and 8m remote. It uses R32 refrigerant. Given the indoor unit's 14.5kg / outdoor 31.5kg weight and refrigerant pipework, Costway recommends professional installation by a licensed HVAC technician — and UK F-Gas rules require a certified engineer for any split system.