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Trane Gas furnace A951X120DU5SA

Trane Trane AHRI Furnace - RunTru by Trane A951X 95% Gas Furnace Gas furnace Repair, maintenance, and replacement planning
Trane A951X120DU5SA product image

Technical Specifications

Product Specs

  • AHRI unit role: Furnace
  • AHRI model/pattern: A951X120DU5SA
  • AHRI records represented: 9
  • AHRI equipment type: HP - Split System
  • AHRI refrigerant: R-454B
  • Verified catalog model: A951X120DU5SA
  • Verified product family: RunTru by Trane A951X 95% Gas Furnace
  • Verified catalog brand: Trane
  • Verified model family: A951X
  • AHRI furnace model/pattern: A951X120DU5SA
  • Base furnace model: A951X120DU5SA
  • Nominal input: 120,000 BTU/h
  • AFUE: up to 96%
  • Heating stages: single-stage
  • Blower: constant-torque ECM
  • Combustion: condensing gas furnace
  • Configuration: upflow/horizontal
  • Blower tonnage: 5 ton
  • Cabinet width: 24.5 in.
  • Dimensions: 34 in. H x 24.5 in. W x 28.8 in. D
  • Application: matched gas furnace for split-system air conditioner or heat pump combinations
  • Public RunTru by Trane product page: https://runtruhvac.com/furnaces/

Useful troubleshooting details

  • Confirm the installed model and serial number, matched indoor or outdoor equipment, voltage, refrigerant, controls, and AHRI certificate before service or replacement planning.
  • Use the linked AHRI certificates to verify matched-system combinations, rebate conversations, and equipment eligibility before quoting replacement work.
  • Collect photos of the nameplate, equipment access, recent fault history, and comfort symptoms before dispatch or proposal planning.

Troubleshooting

Troubleshooting and error codes

View error codes

Certification match

AHRI certificates

View All
ENERGY STAR certified HP - Split System

AHRI 218469509

AHRI 218469509 identifies a Mass Save qualified HP - Split System from Trane with outdoor unit N5HP5030A1 and indoor unit 5PX*D010AS3+TSTAT.

ENERGY STAR certified HP - Split System

AHRI 218469692

AHRI 218469692 identifies a Mass Save qualified HP - Split System from Trane with outdoor unit N5HP5036A1 and indoor unit 5TXCD008AS3+TSTAT.

ENERGY STAR certified HP - Split System

AHRI 218469695

AHRI 218469695 identifies a Mass Save qualified HP - Split System from Trane with outdoor unit N5HP5036A1 and indoor unit 5TXCD010AS3+TSTAT.

ENERGY STAR certified HP - Split System

AHRI 218469746

AHRI 218469746 identifies a Mass Save qualified HP - Split System from Trane with outdoor unit N5HP5042A1 and indoor unit 5PX*D008AS3+TSTAT.

ENERGY STAR certified HP - Split System

AHRI 218469750

AHRI 218469750 identifies a Mass Save qualified HP - Split System from Trane with outdoor unit N5HP5042A1 and indoor unit 5PX*D010AS3+TSTAT.

ENERGY STAR certified HP - Split System

AHRI 218469783

AHRI 218469783 identifies a Mass Save qualified HP - Split System from Trane with outdoor unit N5HP5042A1 and indoor unit 5TXCD008AS3+TSTAT.

ENERGY STAR certified HP - Split System

AHRI 218469787

AHRI 218469787 identifies a Mass Save qualified HP - Split System from Trane with outdoor unit N5HP5042A1 and indoor unit 5TXCD010AS3+TSTAT.

ENERGY STAR certified HP - Split System

AHRI 218469833

AHRI 218469833 identifies a Mass Save qualified HP - Split System from Trane with outdoor unit N5HP5048A1 and indoor unit 5PX*D010AS3+TSTAT.

ENERGY STAR certified HP - Split System

AHRI 218469861

AHRI 218469861 identifies a Mass Save qualified HP - Split System from Trane with outdoor unit N5HP5048A1 and indoor unit 5TXCD010AS3+TSTAT.

Service planning

How GreenFlow handles A951X120DU5SA requests

1

Identify the equipment

Confirm the model or series name, serial number if available, photos, and whether the unit is roof, exterior, basement, or mechanical-room equipment.

2

Describe the service issue

Share no heat, no cooling, weak airflow, error codes, alarms, leaks, noise, control problems, or comfort complaints.

3

Review access and history

Include access notes, tenant or business-hour constraints, filter status, recent repairs, and maintenance records when available.

4

Plan the next step

GreenFlow can route the request for diagnostics, repair planning, maintenance, replacement scope, or related system upgrades.

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