Advanced technology. Efficiency. Ironclad reliability fueled by more than 80 years of expertise, testing and research in home comfort. When you select an Armstrong Air® A801A furnace, you're getting a furnace built on a tradition of quality craftsmanship. You're also getting an exceptional value. It's this combination that makes us the brand chosen by HVAC professionals across the country.

80% AFUE Efficiency Rating

Compared to an older furnace, this can potentially save you hundreds of dollars per year in energy costs.

Like a variable speed furnace, constant torque furnaces provide lower operating costs and increases to overall system efficiency. Compared to standard PSC motors, constant torque delivers more consistent airflow and quieter operation.

Uses a smaller Btu input per burner for quieter start-up and operation while providing more even heat distribution.

Every Armstrong Air furnace is engineered and built with EHX Technology, a patented design that eliminates the hot spots that can shorten furnace life. EHX Technology makes heat exchangers more durable, and with its advanced airflow system, more air contacts the heat exchanger surface area for greater heat exchange, enhancing efficiency and comfort.

Uses a smaller Btu input per burner for quieter start-up and operation while providing more event heat distribution.

Armstrong air furnace's electronic control system prolongs system life by continuously monitoring internal components for optimum performance and faults prevention