Description
The Carrier HH57ZC003 Enthalpy Switch is a precision control component engineered for use in Carrier economizer systems. By continuously monitoring outdoor air enthalpy — a combined measure of temperature and humidity — this switch determines when outdoor air conditions are favorable for free cooling, enabling the economizer to bring in outside air and reduce mechanical cooling loads.
How It Works
The enthalpy switch measures the heat content of outdoor air and signals the economizer control to open or close the outdoor air damper accordingly. When outdoor enthalpy is low enough, the system takes advantage of natural cooling, reducing compressor run time and lowering energy costs.
Key Features
- OEM Carrier replacement part — direct-fit for compatible Carrier rooftop and air handling units
- Senses outdoor air enthalpy to optimize economizer free-cooling cycles
- Helps reduce mechanical cooling demand and energy consumption
- Designed for reliable, long-term performance in commercial HVAC applications
- Easy installation as a drop-in replacement for worn or failed enthalpy sensors
Application
- Compatible with Carrier economizer-equipped rooftop units and air handlers
- Intended for commercial and light commercial HVAC systems
- Ideal for preventive maintenance and service replacement
Specifications
- SKU: HH57ZC003
- Brand: Carrier
- Type: Enthalpy Switch
- Application: Economizer Control
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