Features and specifications: 1) Economical installation 2) Convenient management 3) Space saving installation 4) Elegant design 5) Suitable for stores homes, and offices as well as medium and small-size building 6) Replaces more expensive pipe systems 7) High-lift automatic water drainage room 8) Flexible installation 9) Wide outdoor static pressure 10) Heat pump plus auxiliary electric heating unit 11) Wireless or remote controlled 12) Cation and anion can kill germs in a short time making air fresh and pure