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KeepRite Gas furnace F80CSU-100,000 BTU/h input

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KeepRite KeepRite AHRI Furnace - Ion 80 Ultra Low NOx Gas Furnace Gas furnace Repair, maintenance, and replacement planning
KeepRite F80CSU-100,000 BTU/h input product image

Technical Specifications

Product Specs

  • AHRI unit role: Furnace
  • AHRI model/pattern: *80CSU1002120A*
  • AHRI records represented: 78
  • AHRI equipment type: Central HP
  • AHRI tonnage: 2.8666666666666667
  • AHRI refrigerant: R-454B
  • Verified catalog model: *80CSU1002120A*
  • Verified product family: Ion 80 Ultra Low NOx Gas Furnace
  • Verified catalog brand: KeepRite
  • Verified model family: F80CSU
  • AHRI model/pattern: *80CSU1002120A*
  • Nominal input: 100,000 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
  • Official product page: https://www.keeprite.com/en/us/products/gas-furnaces/ion-80-ultra-low-nox-gas-furnace

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 215668649

AHRI 215668649 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X37M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215668809

AHRI 215668809 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X42M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215668969

AHRI 215668969 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X43M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215669119

AHRI 215669119 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X48M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215669299

AHRI 215669299 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X60M24A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215669449

AHRI 215669449 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X61M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215669619

AHRI 215669619 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X61M24A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215669763

AHRI 215669763 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V36*K*AAA* and indoor unit ESH5X36M12A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215669955

AHRI 215669955 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V36*K*AAA* and indoor unit ESH5X42M12A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215670153

AHRI 215670153 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V36*K*AAA* and indoor unit ESH5X48M12A*+WALLCON.
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Service planning

How GreenFlow handles F80CSU-100,000 BTU/h input 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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Our Happy Customers

Anna G.

They quickly identified the issue with the heating system and fixed it efficiently. He explained everything clearly and made sure I understood what was going on. Very professional and reliable, extremely satisfied with the service.

Jenny W.

Great service! On time, knowledgeable & professional

Jahangir R.

They were very organized to communicate and be on time to come to look at my air condition to fix it.

Ray

Just had a service call because my tankless water heater stopped working with E110 code. Andrey located the root cause real quick and fixed the issue within half an hour, also gave reasonable recommendations for further maintenance.

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