Trane A951X080CU5SA Gas Furnace 80000 Btu 95% Afue Multi Speed Upflow Horizontal

Product Description

The Trane A951X080CU5SA is a single-stage, multi-speed condensing gas furnace rated at 80,000 BTU input and 95% AFUE. It is designed for upflow installation with convertible horizontal left or horizontal right configurations, giving installers flexibility in tight mechanical rooms and utility closets. The integrated furnace control (IFC) board features a 7-segment LED display, on-board diagnostics, and storage of the last six error codes, reducing troubleshooting time in the field. The cabinet meets ASHRAE 193 air-leakage standards at 1.4% or less, and the open vestibule design provides a full 34 inches of vertical clearance for component access. This unit carries ENERGY STAR certification and is compatible with natural gas and propane gas fuel sources.

The A951X080CU5SA is suited for residential upflow applications where the air handler sits below the living space and supply air moves upward through the duct system. The unit can also be field-converted to horizontal right or horizontal left orientation, making it adaptable to attic and crawlspace installations. Cabinet width is 21 inches, consistent with industry-standard coil and accessory fitment. Airflow can be configured down to 290 CFM per ton, providing flexibility for a range of system designs. It has been available on the market since July 2019 and is part of the RunTru by Trane A951X series.

Key Features

• 80,000 BTU input capacity with 95% AFUE for high-efficiency residential heating
• Multi-speed blower motor supports variable airflow configuration down to 290 CFM per ton
• Upflow design with field-convertible horizontal left and horizontal right orientation
• Integrated furnace control with 7-segment LED display, setup menus, and last-six-error diagnostic memory
• Air-tight cabinet with 1.4% or less air leakage per ASHRAE 193
• ENERGY STAR certified; compatible with natural gas and propane gas
• Open vestibule design with 34-inch clearance height for full component access

Compatibility

The A951X080CU5SA is part of the RunTru by Trane A951X series and has been documented as part of split systems including the A4AC3030D1 condenser and 4MXCC005AC6HCB air handler. Cabinet dimensions conform to industry-standard widths, making it compatible with standard coils and accessories designed for 21-inch platform furnaces.

Installation Notes

Installation of this condensing gas furnace must be performed by a licensed HVAC technician in accordance with the International Fuel Gas Code (IFGC) and applicable local codes. Shut off gas supply and disconnect electrical power at the breaker before any service or wiring work. The unit requires a properly sized PVC condensate drain and two-pipe direct-vent combustion air system. Do not attempt to convert fuel type or alter the IFC wiring without consulting the manufacturer installation guide.

Technical Specifications

• Heating Input Capacity: 80,000 BTU/h
• AFUE: 95%
• Configuration: Upflow, convertible to Horizontal Left or Horizontal Right
• Cabinet Width: 21 inches
• Cabinet Depth: approximately 28 inches
• Vestibule Height: 34 inches open clearance
• Minimum Airflow: 290 CFM per ton
• Air Leakage: 1.4% or less per ASHRAE 193
• Fuel Type: Natural Gas, Propane Gas
• Certification: ENERGY STAR, ANSI Z21.47 / CSA 2.3
• Market Availability Date: July 24, 2019

Standard Information

• Brand: Trane
• Manufacturer Part Number: A951X080CU5SA