Goldsun air source heat pump 1. -25 DC low temp use, EVI 2. cooling and heating 3. ... series heat pump, you will see below advantages:1. 43°C ~-25°C wide range use. EVI air to water heat pump is ... area. The ambient temperature range is -25°C to 43°C. It can use safely in -20°C ambient.2. Strong low-temperature heating ... , please contact us directly! Goldsun air source heat pump (-25 degree, GSK-45WH)