Select models in the model group are Energy Star qualified.Ĭommunicating control enabled or conventional controlĬonventional control with two-stage thermostat or single-stage thermostatĪrmstrong has self diagnostics saves last 10 fault codes regardless of power interruption Meets ENERGY STAR Gas Furnace qualifications Limited Lifetime Warranty on the stainless steel heat exchanger Heavy-duty stainless-steel tubular heat exchanger with stainless-steel secondary heat exchangerĪrmstrong has a Limited Lifetime Warranty on the stainless steel heat exchanger
We recommend a variable-speed inducer motor for modulating purposes.Īrmstrong uses a heavy-duty stainless-steel tubular heat exchanger with stainless-steel secondary heat exchanger Inducer motor information is not indicated. Removable heat exchanger with Aluminized steel primary and stainless steel secondary construction Stainless steel primary and secondary heat exchanger Armstrong Gas Furnace Model Comparison Guide Armstrong Gas Furnace Model Comparison MatrixĪFUE Rating Up to 95% with baseline models starting at 80% AFUEĮfficient and quiet ECM variable-speed induced draft blower motorĪrmstrong uses a stainless steel primary and secondary heat exchanger
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