PORTABLE A/C HEATER COMBO UNIT - Our 14,000 BTU dual compact air conditioner & heater will keep you cool & comfortable during the summer, & toasty warm in the winter. An adjustable fan speed cools the air up to 55 ?F, and heats up to 81 ?F HEATS & COOLS MOST ROOMS - This portable heat & AC unit provides steady & fast cooling and heating for rooms up to 350 sq. ft. It?s the perfect air conditioner & heater for dorms, apartments, cabins, campers, offices, bedrooms, garages, or living rooms SIMPLE & QUICK TO INSTALL ? Since it?s easy to move around with handles & castor wheels, just roll it into any room with an accessible double hung or sliding window. Attach the included hose (4? 11? long) & window adapter, & plug it in to an outlet EASY TO USE & CLEAN ? The simple remote control & top-mounted LED display with 24-hour timer allow you to precisely control the air temperature. To clean the filter, just slide it out twice a month, rinse it thoroughly under running water, & put it back 4-in-1 FUNCTIONALITY ? Combining 4 energy efficient modes in one small unit (17.1 x 13.8 x 28.1 in.), the COOL, FAN, HEAT & DEHUMIDIFY settings meet all of your home cooling, heating, & ventilation needs. SLEEP, MAX & AIR SWING functions control airflow