HVAC Closed Loop System vs. Open Loop System

There are two different types of cooling systems: closed loop and open loop. Here’s how HVAC closed loop systems and open loop systems differ from each other.

A refrigeration circuit and a water process circuit are deeply linked. A refrigeration circuit has four main components: the compressor, the condenser, the metering device, and the heat exchanger.

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A process circuit has four main components of its own: the heat exchanger, the pump, the tank, and the temperature sensor. In an open loop system, one or more of the four components of the process circuit are not in the circuit. In a closed loop, conversely, all of these components are present.

If you’re wondering whether you should opt for a closed loop or open loop system for your home, the answer is that it depends on your specific needs as a homeowner. One of the biggest factors to consider is access to groundwater. Closed loop systems are optimal for most homes because they don’t require water. They’re also less likely to accrue debris that can cause damage requiring expensive repairs. However, it’s important to ask an HVAC professional what type of system they think would be best for you.