Be comfortable all year long by using the Royal Sovereign ARP-2210. This portable air conditioner uses an 8,000 BTU, 4-in-1 system that combines an air conditioner to cool, 2-speed fan to circulate air, a 43-pint (20.4 L) dehumidifier to remove moisture, and a heater to provide warmth in winter months. The ARP-2210 is the perfect solution for air comfort in smaller sized rooms up to 300 sq. ft.