Kulthorn compressor wj series wj2450z1, 1 hp, 115v, 1 phase, r404a, lbp the wj series range from 3/41 hp. They are low noise output and low vibration compression spring type compressors. They are compatible with the following refrigerants: r134a, r22, r404a, and r407c. These compressors can be used for air conditioners, commercial and builtin refrigerators, and ice makers.