Lochinvar & A.O. Smith 100166064 Pressure Switch 326058-755 The unit features B and

The unit features B and O terminals for reversing valve control and a backlit LCD for visibility in mechanical rooms

Whether you are balancing a multi-zone residential boiler system or a commercial perimeter heating loop

This OEM part ensures drop-in compatibility and preserves the original equipment's sequence of operation for reliable boiler venting protection

Why is my millivolt system dropping voltage under load

Standardized Ports: 1/4" NPT inlet and 1/8" NPT vent simplify integration into existing commercial gas trains

Lochinvar & A.O. Smith 100166064 Pressure Switch 326058-755 The unit features B andThe 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