Comfort-R technology to increase efficiency 4-way convertible line ensuring flexibility No-rust polymer drain pan & galvanized cabinet to protect the unit Silent operation SEET™ tested (Systems Extreme Environmental Test) for performance guarantee Less than 2% air leak Durable all-aluminum coil Vortica™ blower motor ensures energy efficiency & low carbon emission ComfortLink™ II or 24V Connections to increase overall efficiency & easy control |