this #37 orifice is sized for natural gas

it often indicates the 43K53 is unable to send a sufficient microamp signal to the control board due to oxidation or internal failure

Universal Compatibility: Works seamlessly with 24-volt systems and flexible or rigid ductwork

this updated flue temperature sensor provides real-time thermal feedback to the control board to verify safe combustion levels and prevent exhaust system overheating

including models THE30B through THE48B

York S1-073-22888-005 Plate 328140-751 this #37 orifice is sizedSecure the integrity of your HVAC equipment with the York S1 073 22888 005 Plate, a critical component designed for 6 tube heat exchanger configurations. As a genuine York OEM replacement part, this aluminum balance plate is engineered to ensure precise weight distribution and structural stability within the unit. Veteran technicians know that maintaining the original manufacturers specifications for exhaust system balancing is essential for