Refrigeration and Air Conditioning Volume 2 of 4 - Commercial Refrigeration Quotes

“There was a time when Grandma used a block of ice to keep her food from spoiling. Later, a mechanical unit replaced the block of ice. In those days a service call often meant airing out the kitchen before work could be started because the place was full of ammonia or sulphur dioxide fumes. You do not have that problem today, for the modern domestic refrigerator uses a refrigerant which is practically odourless and harmless.”
― TSD Training, Refrigeration and Air Conditioning Volume 2 of 4 - Commercial Refrigeration: Includes Commercial Refrigeration Systems, Cold Storage, Ice Plants, Special Application, and Vehicle Refrigeration Units