The Reznor 101901 Switch is a heavy-duty Single Pole Double Throw (SPDT) component engineered for precise control in HVACR systems

As a veteran-grade water heater limit switch

Designed for immediate service truck readiness

You must match the water column rating exactly

Key Benefits for Technicians: Precise CH4 Detection: Tailored for Methane gas monitoring to prevent combustion hazards

Rheem-Ruud AS-58632-85 Heat Exchanger Assembly 321702-401 The Reznor 101901 Switch isThe Rheem Ruud AS 58632 85 Heat Exchanger Assembly is a critical OEM furnace replacement component designed specifically for 90% AFUE gas furnaces. Engineered with high grade stainless steel construction, this assembly provides superior corrosion resistance against the acidic condensate typical of high efficiency secondary heat exchange cycles. As the direct replacement for AS 58632 01, it ensures seamless physical fitment and restores factory spec