# Four Pipe Heat Pump System

A Four Pipe Heat Pump System features two separate water circuits for heating and cooling. This flexibility enables the system to simultaneously provide heating in some zones while cooling others. 

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It is comprised of:

* Four Pipe Heat Pump
* Hot Water Loop
* Chilled Water Loop
* Air Handling Unit(s)
* Air Terminal(s)

The 'Select HVAC Template' form provides options, to allow the user to configure the system with:

* Heating via either Hot Water or Electric
* A single AHU connected to multiple Air Terminals or multiple AHUs connected to multiple Air Terminals
* Choice of Spaces for Air Terminals

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