Adopting a fully enclosed vortex compressor, paired with a low-noise centrifugal fan, it is different from general household appliances and is highly suitable for reliable defrosting design in industrial and commercial spaces. It improves operating efficiency by using an efficient air window fin evaporator and condenser combination, which is efficient and energy-saving. It can be easily switched to operate normally at minus 5 ℃ without the need for auxiliary electric heating energy consumption heating. The highly intelligent control panel is highly efficient and can be matched with remote monitoring of large-size piping specifications (40m long, 20m height difference), greatly reducing building constraints. It adopts an ultra thin design, beautiful and generous, and is easy to harmoniously match with the surrounding environment. It can be matched with Dongyuan nano photocatalyst to create a healthy and good environment.