Trane A952V080BD4SA Downflow Gas Furnace 80000 Btu 96% Afue Variable Speed

Product Description

The Trane A952V080BD4SA is a two-stage, downflow natural gas furnace with a variable-speed blower motor, rated at 80,000 BTU input and 96% AFUE. That efficiency rating means approximately 76,000 BTU of usable heat output per cycle, with minimal flue loss. The variable-speed ECM blower delivers quieter operation and more consistent airflow compared to single-speed units. This furnace is designed for downflow installations and is part of the RunTru by Trane product line. Licensed HVAC technicians handle installation and commissioning in residential applications.

The A952V080BD4SA is suited for residential downflow installations, including split systems paired with a matching evaporator coil and outdoor condensing unit. It is compatible with standard 24-volt thermostat control wiring. The unit has been offered as part of a bundled system with a 3.5-ton 14.3 SEER2 air conditioner configuration. Installations requiring a downflow air discharge orientation — such as crawl-space delivery or platform-mount setups — are typical applications for this model.

Key Features

• 80,000 BTU input capacity with approximately 76,000 BTU output at 96% AFUE
• Variable-speed ECM blower for quieter, more consistent airflow
• Two-stage gas valve for improved temperature control and reduced cycling
• Downflow air discharge orientation for platform or crawl-space duct systems
• 24-volt control circuit compatible with standard residential thermostats
• High-efficiency condensing design with low flue gas temperature

Compatibility

Documented in a 3.5-ton downflow system configuration with the A4AC4042D1 outdoor condensing unit and 4MXCB006AC6HCB evaporator coil. Designed as a downflow residential gas furnace compatible with standard 24-volt thermostat controls. Verify coil and air handler compatibility with Trane equipment selection documentation before installation.

Installation Notes

Installation must be performed by a licensed HVAC technician in accordance with local mechanical codes, the National Fuel Gas Code (NFPA 54), and the manufacturer installation instructions. Shut off gas supply and disconnect electrical power before any service work. As a condensing furnace, this unit requires a properly pitched PVC condensate drain line and a two-pipe direct-vent flue system — do not connect to a B-vent or single-pipe flue. Verify static pressure and airflow meet design specifications for the installed duct system before startup.

Technical Specifications

• Input Capacity: 80,000 BTU/h
• Output Capacity: 76,000 BTU/h
• AFUE: 96%
• Blower Motor Type: Variable Speed ECM
• Gas Valve Stages: 2
• Control Voltage: 24 volts
• Airflow: 1,600 nominal CFM
• Installation Orientation: Downflow

Standard Information

• Brand: Trane
• Manufacturer Part Number: A952V080BD4SA