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Kenmore Gas furnace *80CSU0802120B*

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Kenmore Kenmore AHRI Furnace - Ion 80 Ultra Low NOx Gas Furnace Gas furnace Repair, maintenance, and replacement planning
Kenmore *80CSU0802120B* product image

Technical Specifications

Product Specs

  • AHRI unit role: Furnace
  • AHRI model/pattern: *80CSU0802120B*
  • AHRI records represented: 81
  • AHRI equipment type: Central HP
  • AHRI tonnage: 3.7083333333333335
  • AHRI refrigerant: R-454B
  • Verified catalog model: *80CSU0802120B*
  • Verified product family: Ion 80 Ultra Low NOx Gas Furnace
  • Verified catalog brand: Kenmore
  • Verified ENERGY STAR dataset: ENERGY STAR Certified Heat Pumps
  • ENERGY STAR partner: Carrier Corporation
  • ENERGY STAR outdoor brand: Kenmore
  • ENERGY STAR series: Deluxe 20 VS Heat Pump
  • ENERGY STAR outdoor model: (C,H,T)5H0V48*K*AAA*
  • ENERGY STAR indoor model: EA*5X48M21A*+WALLCON
  • ENERGY STAR furnace model: *80CSU0802120B*
  • Matched-system SEER2: 17.50
  • Matched-system EER2: 9.50
  • Matched-system HSPF2: 9.00
  • Matched-system cooling capacity: 44,500 BTU/h
  • Matched-system heating capacity at 47F: 48,000 BTU/h
  • Matched-system heating capacity at 17F: 42,500 BTU/h
  • Compressor staging: Continuously variable
  • Refrigerant: R-454B (GWP:470 | Lower GWP)
  • ENERGY STAR certified date: 2026-05-01
  • ENERGY STAR source dataset: https://data.energystar.gov/d/83eb-xbyy
  • Carrier-family public product page: https://www.airquestcomfort.com/en/us/products/gas-furnaces/ion-80-ultra-low-nox-gas-furnace
  • Verified Carrier-family model family: F80CSU
  • AHRI furnace model/pattern: *80CSU0802120B*
  • Nominal input: 80,000 BTU/h input
  • AFUE family: 80%
  • Heating stages: single-stage
  • Blower: variable-speed
  • NOx classification: ultra-low NOx
  • Cabinet width code: 21
  • Application: matched gas furnace for split-system air conditioner or heat pump combinations

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.

Certification match

AHRI certificates

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Eligible Central HP <5.4 tons

AHRI 215681331

AHRI 215681331 identifies a Mass Save qualified Central HP <5.4 tons from KENMORE with outdoor unit (C,H,T)5H0V48*K*AAA* and indoor unit EA*5X48M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215681391

AHRI 215681391 identifies a Mass Save qualified Central HP <5.4 tons from KENMORE with outdoor unit (C,H,T)5H0V48*K*AAA* and indoor unit EA*5X60M24A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215681471

AHRI 215681471 identifies a Mass Save qualified Central HP <5.4 tons from KENMORE with outdoor unit (C,H,T)5H0V48*K*AAA* and indoor unit EA*5X61M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215681531

AHRI 215681531 identifies a Mass Save qualified Central HP <5.4 tons from KENMORE with outdoor unit (C,H,T)5H0V48*K*AAA* and indoor unit EA*5X61M24A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215681701

AHRI 215681701 identifies a Mass Save qualified Central HP <5.4 tons from KENMORE with outdoor unit (C,H,T)5H0V48*K*AAA* and indoor unit ESH5X60M12A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215681781

AHRI 215681781 identifies a Mass Save qualified Central HP <5.4 tons from KENMORE with outdoor unit (C,H,T)5H0V48*K*AAA* and indoor unit EVM5X48M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215681851

AHRI 215681851 identifies a Mass Save qualified Central HP <5.4 tons from KENMORE with outdoor unit (C,H,T)5H0V48*K*AAA* and indoor unit EVM5X49M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215681931

AHRI 215681931 identifies a Mass Save qualified Central HP <5.4 tons from KENMORE with outdoor unit (C,H,T)5H0V48*K*AAA* and indoor unit EVM5X60M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215681991

AHRI 215681991 identifies a Mass Save qualified Central HP <5.4 tons from KENMORE with outdoor unit (C,H,T)5H0V48*K*AAA* and indoor unit EVM5X60M24A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215682051

AHRI 215682051 identifies a Mass Save qualified Central HP <5.4 tons from KENMORE with outdoor unit (C,H,T)5H0V48*K*AAA* and indoor unit EVM5X61M24A*+WALLCON.
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Service planning

How GreenFlow handles *80CSU0802120B* 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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