Sundez EVI Low Ambient Temperature Air to Water Heat Pump for cold areaSundez EVI low ambient temperature air to water heat pump is designed for house heating as well as sanitary hot water in coldarea, including North Europe and East Europe. This is one of the best air source heat pumps for cold area currently, withreliable operation at -25DegC ambient temperature, and the COP at -15DegC ambient temperature is up to 2.5.Features:1. Copeland EVI scroll compressor with R407C.2. Designed for central heating for houses in cold area including North Europe and East Europe.3. Can work stably at -25DegC ambient, and the COP at -15DegC ambient is up to 2.5.4. With COP-booster (sub-cooler) to improve performance at low temperature.5. Can work with indoor thermostat.6. Can work with auxiliary heater.7. Using electronic expansion valve, achieving accurate, stable and high efficiency throttling.8. Split design, no water system outside, no freezing and damage to water system. Optional refrigerant pipe quick connection is available, to reduce installation cost.9. The outdoor unit is designed for anti-snow.10. Low noise design for the outdoor unit. The compressor is on a floating plate to reduce vibration at the most extent. Noise iinsulation inside the cabinet. The fan is extremely quiet.11. Crank heater for compressor to make sure safe start at low temperature.12. Fast plug for coupling the indoor unit and outdoor unit, for power for circulation pump and signal for sensors.13. The refrigerant connections are designed to allow hiding all pipes, wires into the ground to ensure good looking installation.14. The indoor unit is designed for substituting traditional boilers easily, with luxurious outlook.15. Circulation pump, stainless steel SUS316# plate heat exchanger, and expansion vessel are included in indoor unit.16. Both of the outdoor unit and indoor unit cabinets are made in galvanized steel with powder coating.Warranty: 2 years since delivery