9000 BTU Portable AC 4-In-1 Air Conditioner with Dry and Fan Mode

Stepping up in capacity, the Costway 9000 BTU portable air conditioner is a 4-in-1 unit with dedicated dry and fan modes, sized for medium UK rooms up to around 15 m² at roughly 600 BTU per square metre. That makes it a strong fit for larger bedrooms, lounges and home offices where a 7000 BTU model would struggle. As a true refrigerated air conditioner it lowers the actual room temperature rather than just moving air, and the separate dry mode tackles muggy, humid days by reducing moisture, while fan mode gives you airflow without cooling. To be clear about how these units work, this is a single-hose portable air conditioner that vents through a window via its exhaust hose – no portable air conditioner is genuinely hoseless, because the heat pulled from the room must be expelled outdoors. As a running-cost guide, a 9000 BTU unit typically costs around 22–30p per hour at roughly 26p per kWh, depending on how hard it works. With four modes in one mobile cabinet and the freedom to roll it between rooms, this 9000 BTU 4-in-1 offers flexible, genuine cooling and dehumidifying for medium spaces across the warmer months.