The RunTru A801X100CM5 is a 100,000 BTU input gas furnace designed for residential (or light‑commercial) heating of medium to large homes.
HVACDirect
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HVACDirect
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Ferguson
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It operates at 80% AFUE (Annual Fuel Utilization Efficiency), meaning about 80% of the fuel’s energy is turned into heating, with the rest lost via the flue and other normal losses.
HVACDirect
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Ferguson
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It is a single-stage burner, meaning it only has one level of heat output (on/off), not variable or staged heating.
HVACDirect
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It uses a multi-position design, which means it can be installed in various orientations (upflow, downflow, horizontal) to adapt to different home layouts.
Ferguson
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HVACDirect
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The blower motor is of the ECM (Electronically Commutated Motor) type, often “constant torque,” meaning more efficient motor control and more even airflow.
crescentparts.com
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It’s field‐convertible to propane (with optional LP kit) in many cases.