... DC low temp, EVI design 2.Cop to 4.8, 410A 3. House heating & cooling +DWH 4. CE approved Goldsun EVI split ... split design for cold area to install inside the house. Thus, the system can provide stable running in even -20 DC ... advantages:1. Compressor and water system split design, can install inside the house ... heat pump(evi air to water,low temp, -25 DC, split, CE, EN14511-2:2011, EN14511-2:2007, NFPAC ...