The wide range of operating temperatures, compact size, reversible control box and piping enable the NSW hydronic heat pump to be used in a variety of applications. These include pool/spa heating, radiant floor, snow melt, aquaculture, and process water installations. NSW units can be used for heating only, cooling only (field converted for chilled water applications), or heating/cooling. A sophisticated microprocessor controls the pumps and compressor by sampling the entering water temperature. The controller enables the user to view all modes of operation and easily adjust temperatures. All fault conditions are monitored by the controller to ensure safe, reliable operation. The NSW cabinet is fabricated from heavy-gauge steel and finished with a corrosion-resistant polyester coating to provide years of durability and beauty. Scroll compressors, R-410A refrigerant, and oversized heat exchangers combine to provide the user with exceptional energy savings.