Nordyne 903478 Heat Exchanger Refrigerant this unit is factory-calibrated for

this unit is factory-calibrated for an 8 psi crossover point

often causing heavy creosote buildup in the chimney due to low return temperatures

Multi-Evaporator Efficiency: Enables smooth operation of multiple evaporators at different temperatures on a shared suction line

High Current Capacity: Rated for 16A 125VAC

Nordyne 903478 Heat Exchanger Refrigerant this unit is factory-calibrated forThe Nordyne 903478 is a heavy duty, stainless steel heat exchanger engineered specifically for technical compatibility with Nordyne gas furnaces and forced air systems. As a genuine OEM replacement part, this primary heat exchanger ensures precise fitment within the combustion chamber, eliminating the alignment issues common with universal aftermarket components. The upgrade to high grade stainless steel provides significant resistance to thermal