80% Single Stage, 70,000 BTU Gas Furnace, Downflow, 17-1/2" Wide

Concord 85W45 – 66,000 BTU 80% AFUE Downflow Gas Furnace

The Concord 85W45 gas furnace is a downflow-configured unit engineered for 80% AFUE performance, providing reliable heat output while meeting efficiency requirements for standard residential applications. Designed with a constant torque blower motor and aluminized steel heat exchanger, this single-stage furnace delivers consistent airflow and long-term durability under typical load conditions.

Key Performance Features

• AFUE Rating: 80% – Provides standard energy efficiency for installations not requiring high-efficiency condensing furnaces.
• Constant Torque Motor: Maintains steady airflow and improves operational efficiency versus legacy PSC motors.
• Aluminized Steel Heat Exchanger: Crimped, not welded, to reduce stress points and enhance longevity in high-heat environments.
• Factory-Assembled Blower Cabinet: Anti-vibration design supports quieter operation during airflow cycles.
• Pressure-Switch Safety Circuitry: Supports reliable burner operation with built-in safeguards against vent blockages and pressure loss.

Technical Specifications

• Model: 85W45
• Input: 66,000 BTU/hr
• Output: 52,800 BTU/hr
• Voltage: 120 VAC, 60 Hz
• Configuration: Downflow
• Cabinet Width: 17.5 inches
• Height: 33 inches
• Temperature Rise Range: 30–60°F
• Cooling System Compatibility: Suitable for use with 2–3 ton systems

Installation Requirements

This model is designed for downflow installations and should be installed in accordance with local code requirements. Electrical and gas connections, venting clearances, and airflow settings must be confirmed at setup. Professional installation by a qualified HVAC technician is strongly recommended to ensure proper combustion, ventilation, and operation.

For Contractors and Installers

The 85W45 furnace is well-suited for residential replacement and new-construction projects requiring standard-efficiency heating solutions. Its compact footprint simplifies placement in utility closets or basements, and the constant torque motor supports compatibility with matched cooling systems using conventional thermostats.

Additional Features

• Multi-Speed Blower: Allows airflow adjustments to meet static pressure and ductwork design requirements.
• Compact Cabinet: Ideal for installations in confined mechanical rooms or tight-space configurations.
• Robust Safety Controls: Integrated safety sensors and control board diagnostics support system reliability.