H. A. Phillips

Since 1928, H. A. Phillips & Co. has designed and manufactured ammonia refrigeration controls for industrial refrigeration applications worldwide. The company was founded by one of the pioneers of the ammonia refrigeration industry, Harry Alexander Phillips. Harry developed numerous patents related to modulating liquid level controls, refrigerant injectors, and automatic systems to protect refrigeration compressors from liquid ammonia slop-over. We also built our name around gas pressure recirculation - a method of liquid transfer that does not require mechanical pumps. All of these products and systems remain in common use throughout the industrial refrigeration industry.