White Rodgers 789A-751A1 HSI THPU32HP7Y Exact Fitment: 1/2-inch bore with

Exact Fitment: 1/2-inch bore with discharge-side hub placement ensures the blade sits at the correct height within the venturi for optimal draw

Common Questions: Which refrigerant types are compatible with this coil

it provides a 10-second Trial for Ignition (TFI) with no pre-purge

Johnson Controls P70EA-9 Pressure Control

While temporary cleaning with steel wool may restore a signal

White Rodgers 789A-751A1 HSI THPU32HP7Y Exact Fitment: 1/2-inch bore withThe White Rodgers 789A 751A1 is a high performance 120V Silicon Nitride Hot Surface Ignitor (HSI) engineered specifically as a Carrier LH33ZG001 direct replacement. As a veteran technician knows, upgrading from older silicon carbide to nitride technology significantly reduces nuisance service calls by providing superior physical durability and faster thermal response. This furnace ignitor features a robust silicon nitride heating element and is rated