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Heat Pump or Heat Recovery?
The Various Heat/Cool Changeover Options
Cooling
Cooling
Cooling
Cooling
Heating
Heating
Heating
Heating
Heat Pump
» The 2 pipe Heat Pump system is the equivalent of a 2-pipe chilled
water system
» A heat pump system provides the means of heating OR cooling
at any given time
» Multiple heat pump systems can be zoned and will work
independently of each other
» When demand is met by an indoor unit the unit will work on fan
only or the fan will cycle on/off until demand returns or mode
change occurs
Heat Recovery
» The 3 pipe Heat Recovery system is the equivalent of a 4-pipe
chilled water system
» A heat recovery system has the ability to provide simultaneous
heating AND cooling
» When both heating and cooling occur simultaneously, system
and building energy can be better utilized
» When demand is met by an indoor unit the unit will work on
fan only or the fan will cycle on/off until demand returns
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