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making it a critical stock item for residential and light commercial service calls
ensuring long-term HVAC system performance and stable bridge-gap ignition across the pilot burner
Manual Reset Mechanism: Ensures the system is physically inspected before resuming operation after a high-limit event
Built with a forged brass body and stainless steel trim
the P100DA-81 is designed to open on pressure rise at high thresholds (630 PSIG)
Carrier HK02ZA408 Gas Switch 326010-701 making it a critical stockThe Carrier HK02ZA408 High Pressure Gas Switch is a critical safety component designed for precise pressure monitoring in residential and commercial HVAC systems. As a genuine OEM replacement part, it ensures seamless compatibility with Carrier furnaces, air conditioners, and heat pumps. This gas pressure switch functions by monitoring the system's internal atmosphere and interrupting the electrical circuit if pressures exceed safe operating limits,