Ground Source Heat Pump for cold area 1. -25 DC low temp. use 2.multifunction 3. 4.5 COP, R410a 4. CE approved 1.Wide applicationWidely used in hotels,restaurants,apartment houses, villas, factories and schools, sauna, bathroom, SPA association, beauty salon, fitness center, swimming pool, aquaculture, etc to applicate with various terminal equipment (fan coil, floor heating, radiators, ...