1/2" 2-Stage Gas Furnace, Upflow/Horizontal, 70,000 BTU

Armstrong Air A97US2V070B12S – 97% AFUE 2-Stage Gas Furnace with Variable Speed Blower

The Armstrong Air A97US2V070B12S gas furnace delivers high-efficiency performance in a compact footprint suitable for both upflow and horizontal configurations. With a heating input of 70,000 BTU/h and an AFUE rating of 97%, this furnace is engineered for reduced energy consumption and consistent comfort across varying load conditions.

Its two-stage gas valve modulates heat output between high and low stages, improving indoor temperature balance and reducing cycling. Combined with a variable-speed ECM blower motor, this unit enhances airflow efficiency and supports advanced humidity control when paired with compatible cooling systems.

Performance Features

• 97% AFUE: High-efficiency operation reduces fuel usage and lowers annual heating costs
• Two-Stage Heating: Adjusts burner output to match demand for improved comfort and efficiency
• Variable-Speed ECM Blower: Maintains precise airflow while reducing noise and improving system performance
• Sealed Cabinet Construction: Insulated design minimizes air leakage and sound transmission
• Aluminized Steel Primary Heat Exchanger: Resists corrosion and thermal fatigue for long service life

Technical Specifications

• Model: A97US2V070B12S
• Input: 70,000 BTU/h
• AFUE: 97%
• Blower Type: Variable-Speed ECM
• Stages: Two-Stage
• Voltage: 120V / 60Hz
• Cabinet Width: 17.5 inches
• Configuration: Upflow/Horizontal

Installation Requirements

This model is intended for professional installation only. Proper sizing, gas piping, venting, and airflow setup are critical to achieving the specified efficiency and performance. The unit is compatible with standard and communicating thermostats, depending on control strategy and system design.

Professional Considerations

Contractors will appreciate the service-friendly cabinet design, diagnostic control board, and application versatility. With its combination of high efficiency, dual-stage operation, and variable-speed airflow, the A97US2V070B12S is a dependable choice for new installations and retrofit projects in residential environments requiring precise temperature control and quiet performance.