EVI (Enhanced Vapor Injection) is a technology that allows a heat pump to operate efficiently at temperatures down to -30°C.
Conventional pumps lose up to 40% of efficiency at -15°C. EVI pumps maintain a stable COP even in the hardest frosts thanks to intermediate compressor cooling.
EVI advantages: stable operation from -30°C to +43°C, faster defrost (2–3 minutes vs 5–10 in standard units), better temperature regulation accuracy, electricity consumption 70% lower than an electric boiler.
DC Inverter + EVI is the best combination for the Ukrainian climate. The compressor smoothly adjusts capacity, while EVI ensures operation in frost. This is exactly the configuration used in the Termojet Sunrise and Ecostar series.
