Stay COOL and breathe fresher air with our new 12000btu units. Ideally cools an area up to 400sq.ft. Effectively improves air circulation in poorly ventilated spaces and maximizes energy efficiency. Uses new UL required LCDI plug. Manual control is specifically recommended for use in Server rooms. If theres a power failure unit will automatically turn itself back on when power resumes.Self-Evaporating Technology - during the cooling or heating process water is extracted from the air into the unit. Most of this water is then recycled and used to cool the cooling coils and make it run more efficiently cooling as well as energy.