Trane A951X120DU5SA Gas Furnace 120000 Btu/h 95% Afue Single Stage Upflow Horizontal

Product Description

The Trane A951X120DU5SA is a single-stage, condensing natural gas furnace rated at 120,000 BTU/h input and 95% AFUE, producing approximately 114,000 BTU/h of usable heat output. Built under the RunTru by Trane product line, this furnace is engineered for residential upflow and convertible horizontal-right or horizontal-left installations. A multi-speed blower motor supports balanced airflow across varied duct configurations. Licensed HVAC technicians install this unit as a primary heating system in forced-air residential applications where dependable mid-efficiency performance is required.

This furnace is suited for residential forced-air heating systems where a 24.5-inch wide upflow cabinet fits the mechanical room or closet layout. The unit converts to horizontal-left or horizontal-right orientation, expanding its range of installation scenarios including crawlspace and attic applications. It operates on natural gas and pairs with standard split-system cooling equipment in a typical upflow configuration.

Key Features

• 120,000 BTU/h input with 95% AFUE for efficient natural gas combustion
• Single-stage gas valve for straightforward, reliable heating operation
• Multi-speed blower motor accommodates varied static pressure and airflow demands
• Upflow cabinet convertible to horizontal-right or horizontal-left orientation
• Integrated furnace control board with 7-segment LED display for diagnostics
• Condensing design recovers latent heat from flue gases for higher seasonal efficiency

Compatibility

Designed as an OEM upflow and convertible horizontal condensing gas furnace replacement or new installation unit within residential forced-air systems. This unit has been listed as a component in matched split systems alongside cooling equipment requiring a compatible upflow furnace platform.

Installation Notes

Installation must be performed by a licensed HVAC technician in accordance with the National Fuel Gas Code (NFPA 54), local mechanical codes, and the National Electrical Code (NEC). Shut off gas supply and disconnect electrical power at the service disconnect before beginning any work on or near the unit. The condensate drain lines must be properly pitched and terminated per local plumbing codes, as this is a condensing furnace that produces acidic condensate. Do not operate the furnace without verifying proper venting, gas pressure, and low-voltage control wiring connections.

Technical Specifications

• Input Capacity: 120,000 BTU/h
• Output Capacity: 114,000 BTU/h
• AFUE: 95%
• Fuel Type: Natural Gas
• Staging: Single Stage
• Blower Motor: Multi-Speed
• Airflow Orientation: Upflow, Convertible to Horizontal Right or Horizontal Left
• Cabinet Width: 24.5 inches
• Cabinet Depth: 28 inches
• Furnace Type: Condensing
• Product Line: RunTru by Trane

Standard Information

• Brand: Trane
• Manufacturer Part Number: A951X120DU5SA