3 Ton Gas Furnace, Two Stage Upflow/Horizontal, Variable Speed, 70,000 BTU

Armstrong Air A802V – 66,000 BTU Two-Stage Gas Furnace with Variable-Speed Blower

The Armstrong Air A802V gas furnace delivers 66,000 BTU input and is engineered for high-performance heating in residential systems requiring an 80% AFUE. This model combines a two-stage gas valve and a variable-speed ECM blower motor, enabling enhanced airflow control, quiet operation, and improved temperature consistency throughout the conditioned space.

Designed for upflow or horizontal configurations, the A802V incorporates EHX™ technology to promote even heat distribution and extend the life of the heat exchanger. The unit is compatible with Comfort Sync® thermostats, allowing for expanded control capabilities in integrated systems. With durable construction and service-friendly access, this model meets the operational demands of professional HVAC installations.

Key Features

• Two-Stage Gas Valve: Provides partial and full-capacity operation, improving comfort and system efficiency.
• Variable-Speed Blower: Maintains precise airflow and reduces noise levels across varying static conditions.
• EHX™ Technology: Eliminates hot spots in the heat exchanger to reduce thermal stress and maintain combustion efficiency.
• 80% AFUE Efficiency: Optimized fuel usage to comply with standard efficiency requirements.
• Smart Thermostat Compatible: Integrated control board allows pairing with compatible communicating thermostats.

Specifications

• Model: A802V
• Input Capacity: 66,000 BTU/h
• Output Capacity: 52,000 BTU/h
• Airflow Rate: 1,200 CFM
• Blower Motor: ECM Variable-Speed
• Voltage: 120 VAC
• Cabinet Dimensions: 33" H x 14.5" W
• Installation Orientation: Upflow/Horizontal

Installation Considerations

Proper installation of the A802V requires expertise in gas line routing, venting, control wiring, and combustion setup. Due to these factors and local code requirements, professional installation by a licensed HVAC technician is recommended to ensure correct operation and safety compliance.

This furnace offers field-proven performance for contractors working in retrofit or new construction applications. Its serviceable layout and durable component design support long-term reliability in demanding operating environments.