Stay above the weather year-round with the NewAir AC-14100H 14,000 BTU portable air conditioner! New with an upgraded compressor and cooling system, this portable room air conditioner is our best all-in-one unit and works as an air conditioner, heater, dehumidifier, fan and air purifier in one. The NewAir AC-14100H features commercial-quality components for durability and dependability, making it a top choice for large areas up to 525 square feet. The AC-14100H also boasts patented self-evaporative technology that improves cooling efficiency for continuous usage with little to no maintenance. Backed by one of the industry's best warranty and return policy, it's easy to see why this air conditioner is one of our recommended ACs.