Mueller E-Star refrigeration units are specifically designed to handle the large temperature changes required to cool milk. They have a true refrigeration compressor rather than an air conditioning compressor that has been adapted for dairy use.

A variety of upgraded features including a Copeland® scroll compressor, a variable-speed fan, rifled tubing, and a sub-cooling coil makes Mueller refrigeration units the most energy-efficient and cost effective refrigeration system available for the dairy industry.