Individual heat pumps (ß10.4.4) have a number of
drawbacks in nonresidential buildings. However,
closed-loop heat pumps, more accurately called waterto-
air heat pumps, offer an efficient option for heating
and cooling large buildings. Each room or zone contains
a water-source heat pump which can provide heating or
cooling, along with air filtration and the dehumidification
associated with forced-air air-conditioning