... pump.EVI split design, the compressor and water part system is split design for cold area to install inside ... the house. Thus, the system can provide stable running in even -20 DC environment, ... you will see below advantages:1. Compressor and water system split design, can install inside the house in cold area ... 2:2011, EN14511-2:2007, NFPAC, EURO-VENT, ENERGY-STAR, DOE,ETL)