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KeepRite Gas furnace F80CSU-80,000 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-80,000 BTU/h input product image

Technical Specifications

Product Specs

  • AHRI unit role: Furnace
  • AHRI model/pattern: *80CSU0802120A*
  • AHRI records represented: 48
  • AHRI equipment type: Central HP
  • AHRI tonnage: 3.7083333333333335
  • AHRI refrigerant: R-454B
  • Verified catalog model: *80CSU0802120A*
  • Verified product family: Ion 80 Ultra Low NOx Gas Furnace
  • Verified catalog brand: KeepRite
  • Verified model family: F80CSU
  • AHRI model/pattern: *80CSU0802120A*
  • 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
  • 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 215674001

AHRI 215674001 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V48*K*AAA* and indoor unit EA*5X48M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215674161

AHRI 215674161 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V48*K*AAA* and indoor unit EA*5X60M24A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215674311

AHRI 215674311 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V48*K*AAA* and indoor unit EA*5X61M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215674461

AHRI 215674461 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V48*K*AAA* and indoor unit EA*5X61M24A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215674711

AHRI 215674711 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V48*K*AAA* and indoor unit ESH5X48M12A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215675140

AHRI 215675140 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V48*K*AAA* and indoor unit ESH5X60M12A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215675370

AHRI 215675370 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V48*K*AAA* and indoor unit EVM5X48M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215675510

AHRI 215675510 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V48*K*AAA* and indoor unit EVM5X49M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215675680

AHRI 215675680 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V48*K*AAA* and indoor unit EVM5X60M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215675850

AHRI 215675850 identifies a Mass Save qualified Central HP <5.4 tons from KEEPRITE with outdoor unit C5H0V48*K*AAA* and indoor unit EVM5X60M24A*+WALLCON.
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Service planning

How GreenFlow handles F80CSU-80,000 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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John F.

I needed 2 new AC units and decided to go with high efficiency heat pumps. I chose Greenflow because of the equipment they offered, and the price (2nd lowest quote and much cheaper than the average of all quote we received). Their technicians were very detail oriented and...

Melissa S.

The repair person came quickly and was super efficient and polite, and showed me what to do next time. He gave my dog a quick pay and was off again.

Anna F.

They showed up within an hour of me making the call on a Sunday. They fixed our system and taught us how to replace the fuse in the future. We would definitely call again.

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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