including the Robertshaw R77-26 and Trane X13190313010

It is highly recommended to use the 68266 OEM switch because the specific differential pressure set point is vital for the safety certifications and operational logic of the furnace

which restores the circuit once the unit cools back down to a safe operating level

improving overall SEER ratings

Nordyne 903481 Heat Exchanger R-22 including the Robertshaw R77-26 andThe Nordyne 903481 Heat Exchanger is the heavy duty genuine OEM replacement part specifically engineered to replace the legacy D10309R model. As a critical primary component in Nordyne furnace systems, including high performance Miller and Intertherm mobile home furnaces, this heat exchanger is built to handle the rigorous thermal cycling of high efficiency gas heating. Technicians recognize the 903481 for its precision formed aluminized steel