Utilizing the heat of rejection generated during a vapor compression cycle has long been a challenging but rewarding focus for both mechanical engineers and electrical utilities. By reversing the flow of refrigerant, a single system can be used to cool in the summer and heat in the winter. Since the energy source in both modes is electricity, electrical utilities have aggressively supported heat pump development. Designing large unitary heat pumps remains a difficult proposition and only the most experienced companies have chosen to offer this kind of product. At Addison, they are confident in offering you a full line of light commercial and commercial heat pumps specifically designed to meet your project requirements.