Haier 14,000-BTU Portable Air Conditioner – Link 
Bj’s has this on sale for only $299.99 w/ free shipping!
You do not need to be a Bj’s member to purchase.
“Enjoy the versatility of a portable air conditioner that offers both cooling and heating capabilities. This Haier 14,000-BTU unit will cool a room 400-500 sq. ft., while its 10,000-BTU heater comes in handy warming up the room when temperature unexpectedly drops. Its 4-directional output assures airflow is directed right where you want it to be, while its dual hose design assures it’s operating as quickly and efficiently as possible.”