this HVAC pressure switch is built for consistent performance in air handling units

1/8" NPT Straight Barbed Fitting Air Connection

meaning it will fully open via spring return if the 24V power source is disconnected

it ensures the efficient expulsion of combustion byproducts before the ignition sequence begins

Built for compatibility with York and Source 1 equipment

Lochinvar & A.O. Smith 100109251 Burner Assembly 326058-757 this HVAC pressure switch isThe Lochinvar & A. O. Smith 100109251 Burner Assembly is a precision engineered Natural Gas (NG) replacement component designed for Flammable Vapor Ignition Resistant (FVIR) water heaters. This high efficiency final burner assembly features a #36 orifice and is critical for maintaining the stoichiometric balance required for clean combustion and optimal thermal transfer in residential and commercial units. As a veteran grade OEM part, it ensures