Lochinvar & A.O. Smith 100166064 Pressure Switch 321702-401 including R-22 and R-407C

including R-22 and R-407C

installing this OEM-spec part is essential for maintaining the ANSI B109

Efficiency Restoration: Restores factory-spec air-to-fuel mixing

What are the symptoms of a faulty S1-024-35776-000 switch

Fail-Safe Design: Integrated dual internal safety switches prevent ignition unless the damper has reached the full 90-degree open position

Lochinvar & A.O. Smith 100166064 Pressure Switch 321702-401 including R-22 and R-407CThe Lochinvar & A. O. Smith 100166064 Pressure Switch is a critical safety component engineered for precise airflow monitoring in high efficiency water heaters and condensing boilers. Designed to prove the inducer motor draft before the ignition sequence begins, this genuine OEM pressure switch prevents the burner from firing if unsafe venting conditions, such as flue blockages or intake restrictions, are detected. This mechanical to electrical