MARS 43330 Pressure Switch 320734-701 This complete humidifier replacement part

This complete humidifier replacement part includes the valve body and integrated solenoid coil

helping to prevent compressor failure

Enhanced Safety: Seamless construction prevents cracked cells

Common Questions How do I confirm if this board fits my specific boiler or water heater

As the direct replacement for 8021-062

MARS 43330 Pressure Switch 320734-701 This complete humidifier replacement partThe MARS 43330 Pressure Switch is a professional grade high pressure cut out designed for precise system protection in residential and commercial HVAC R systems. Engineered as a fixed setting pressure control, this SPST high pressure switch features an automatic reset (A R) mechanism, opening the circuit on pressure rise at 400 PSI and closing it back at 280 PSI. This reliable electromechanical sensor is essential for preventing compressor damage due