Is okay to use commercial appliance inside average US home? For electricity spec: 115/60Hz/1 Ph (NEMA 5-15)
That's fine, they are nominally the same. 120v is utility supply defined by ANSI C84.1. 115v is point of use desired voltage, generally specified by NEMA. One is 120v +5/-10% tolerance, the other is 115V +/-10%.  

NEMA 5-15 is a standard receptacle used throughout a US home.

This document says the cabinet draws 2.0 amps, should easily be used on any nearly any circuit.