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Tempstar Gas furnace F80CSU-80,000 BTU/h input

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Tempstar Tempstar AHRI Furnace - Ion 80 Ultra Low NOx Gas Furnace Gas furnace Repair, maintenance, and replacement planning
Tempstar 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: Tempstar
  • 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.tempstar.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 215674003

AHRI 215674003 identifies a Mass Save qualified Central HP <5.4 tons from TEMPSTAR with outdoor unit T5H0V48*K*AAA* and indoor unit EA*5X48M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215674163

AHRI 215674163 identifies a Mass Save qualified Central HP <5.4 tons from TEMPSTAR with outdoor unit T5H0V48*K*AAA* and indoor unit EA*5X60M24A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215674313

AHRI 215674313 identifies a Mass Save qualified Central HP <5.4 tons from TEMPSTAR with outdoor unit T5H0V48*K*AAA* and indoor unit EA*5X61M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215674463

AHRI 215674463 identifies a Mass Save qualified Central HP <5.4 tons from TEMPSTAR with outdoor unit T5H0V48*K*AAA* and indoor unit EA*5X61M24A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215674714

AHRI 215674714 identifies a Mass Save qualified Central HP <5.4 tons from TEMPSTAR with outdoor unit T5H0V48*K*AAA* and indoor unit ESH5X48M12A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215675142

AHRI 215675142 identifies a Mass Save qualified Central HP <5.4 tons from TEMPSTAR with outdoor unit T5H0V48*K*AAA* and indoor unit ESH5X60M12A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215675372

AHRI 215675372 identifies a Mass Save qualified Central HP <5.4 tons from TEMPSTAR with outdoor unit T5H0V48*K*AAA* and indoor unit EVM5X48M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215675512

AHRI 215675512 identifies a Mass Save qualified Central HP <5.4 tons from TEMPSTAR with outdoor unit T5H0V48*K*AAA* and indoor unit EVM5X49M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215675682

AHRI 215675682 identifies a Mass Save qualified Central HP <5.4 tons from TEMPSTAR with outdoor unit T5H0V48*K*AAA* and indoor unit EVM5X60M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215675852

AHRI 215675852 identifies a Mass Save qualified Central HP <5.4 tons from TEMPSTAR with outdoor unit T5H0V48*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...

Jahangir R.

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

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always available, easy to get a hold of, as a property manager I get lots no heat emergency, usually get to it same day or next day

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Andrey was professional, prompt, smart, thorough and exceedingly pleasant. We are likely switching our current HVAC company to Green Flow.

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