this direct-acting pressure switch operates within a critical 15 to 100 PSI range

Maintains alignment integrity for precise control of air dampers and valves

It is standard practice to replace the dehydrator during any system opening for repair

Material Integrity: Constructed from 99

Venstar VST3800 Thermostat Refrigerant this direct-acting pressure switch operatesFor service technicians requiring a reliable multi stage control solution, the Venstar VST3800 Thermostat serves as the definitive genuine OEM replacement for obsolete units including the VST1800, P374 1100, P374 1800, and T1800. This 4 Heat 2 Cool (4H 2C) thermostat is engineered to interface seamlessly with Carrier Venstar HVAC systems, supporting complex configurations such as multi stage heat pumps, gas electric dual fuel setups, and hydronic