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Index
FAQs
Reference
Fundamentals
Ground Water
(Open-Loop)
Systems
Environment
Equipment
Ground-Coupled
(Closed-Loop)
Systems
Special Considerations
Installations
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Water-to-Air
Water-to-air heat pumps using ground water as the heat source and sink are
offered by a number of manufacturers. To meet the wide range of applications,
units are available in a number of configurations. Air flow is usually in the 400
cfm per ton range.
Typical arrangements and the nominal cooling size ranges include:
 Vertical upflow air discharge from ¾ to 10 tons
Vertical counterflow air discharge from 1 to 6 tons
Horizontal ceiling mounted from ½ to 10 tons
Dual compressor units in the above 3 categories
Split systems (compressor/water heat exchanger and air handling sections) from 1¼ to 5 tons
Large commercial vertical upflow air discharge from 10 to 30 tons.
Other specialty designs available include:
Two speed units, horizontal and vertical from 2½ to 6 tons
Floor mounted console units from ½ to 1½ ton sizes
Hi-rise vertical units, pre-piped and wired, built-in or flush mounted from ½ to 3 tons
Large commercial vertical variable air volume units, Rooftop packages from 5 to 25 tons
Schoolroom Unit Ventilator units from 2 to 4 tons.
Manufacturers offer a wide range of optional accessory items. These include:
hot water generators, system controls, supplemental electric heat packages,
dehumidification options, cupro-nickel water-to-refrigerant heat exchangers, hose
kits, cabinet paint finishes, improved filters, and sound attenuation packages.
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