4 Ton Gas Furnace, Two Stage Upflow/Horizontal, Variable Speed, 90,000 BTU

Armstrong Air 88W07 – A802V 88,000 BTU Two-Stage Variable Speed Gas Furnace

The Armstrong Air 88W07 (Model A802V090D3S-08) is an 80% AFUE gas furnace engineered for residential heating systems requiring flexible operation and consistent temperature control. With an input capacity of 88,000 BTU and a two-stage gas valve, this unit provides efficient heat output by modulating between high and low stages to meet real-time heating demands and minimize energy waste.

This furnace includes a variable speed ECM blower motor, allowing for precise airflow adjustments, reduced noise levels, and improved compatibility with zoning and advanced filtration systems. Built with Armstrong Air’s EHX™ Technology, the clamshell-style heat exchanger promotes uniform heat distribution and structural durability under high operating temperatures.

Core Features

• Two-Stage Heating: Improves temperature control and reduces fuel consumption under part-load conditions.
• Variable Speed Blower: Enhances air circulation, reduces operational noise, and supports system efficiency.
• EHX™ Heat Exchanger: Precision-engineered for even heat transfer and extended heat exchanger service life.
• Smart Thermostat Compatibility: Integrates with Comfort Sync® control systems for remote monitoring and diagnostics.
• AFUE Rating: 80% – Meets standard efficiency levels for non-condensing residential gas furnaces.

Technical Specifications

• Model: A802V090D3S-08
• Input Capacity: 88,000 BTU
• Output Capacity: 70,000 BTU
• AFUE: 80%
• Airflow: 1,600 CFM
• Voltage: 120V
• Cabinet Dimensions: 33" H x 17.5" W
• Configuration: Upflow / Horizontal

Installation Notes

Installation should be performed by a licensed HVAC contractor to ensure safe setup, correct gas line sizing, proper airflow balancing, and code compliance. The variable speed and two-stage control features require compatible thermostats and accurate configuration to achieve optimal system performance and reliability.