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Heil Gas furnace *80CSU0802120B*

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

Technical Specifications

Product Specs

  • AHRI unit role: Furnace
  • AHRI model/pattern: *80CSU0802120B*
  • AHRI records represented: 154
  • AHRI equipment type: Central HP
  • AHRI tonnage: 2.9
  • AHRI refrigerant: R-454B
  • Verified catalog model: *80CSU0802120B*
  • Verified product family: Ion 80 Ultra Low NOx Gas Furnace
  • Verified catalog brand: Heil
  • Verified model family: F80CSU
  • AHRI 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
  • Official product page: https://www.heil-hvac.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 217909454

AHRI 217909454 identifies a Mass Save qualified Central HP <5.4 tons from HEIL with outdoor unit N5H9V36*K*AAA* and indoor unit EVM5X43M21A*.
Eligible Central HP <5.4 tons

AHRI 217909461

AHRI 217909461 identifies a Mass Save qualified Central HP <5.4 tons from HEIL with outdoor unit Q5H9V36*K*AAA* and indoor unit EVM5X43M21A*.
Eligible Central HP <5.4 tons

AHRI 217910373

AHRI 217910373 identifies a Mass Save qualified Central HP <5.4 tons from HEIL with outdoor unit N5H9V36*K*AAA* and indoor unit EVM5X48M21A*.
Eligible Central HP <5.4 tons

AHRI 217910380

AHRI 217910380 identifies a Mass Save qualified Central HP <5.4 tons from HEIL with outdoor unit Q5H9V36*K*AAA* and indoor unit EVM5X48M21A*.
Eligible Central HP <5.4 tons

AHRI 217911554

AHRI 217911554 identifies a Mass Save qualified Central HP <5.4 tons from HEIL with outdoor unit N5H9V36*K*AAA* and indoor unit EVD5X36M21A*.
Eligible Central HP <5.4 tons

AHRI 217911561

AHRI 217911561 identifies a Mass Save qualified Central HP <5.4 tons from HEIL with outdoor unit Q5H9V36*K*AAA* and indoor unit EVD5X36M21A*.
Eligible Central HP <5.4 tons

AHRI 217914140

AHRI 217914140 identifies a Mass Save qualified Central HP <5.4 tons from HEIL with outdoor unit N5H9V36*K*AAA* and indoor unit EVD5X48M21A*.
Eligible Central HP <5.4 tons

AHRI 217914147

AHRI 217914147 identifies a Mass Save qualified Central HP <5.4 tons from HEIL with outdoor unit Q5H9V36*K*AAA* and indoor unit EVD5X48M21A*.
Eligible Central HP <5.4 tons

AHRI 217914969

AHRI 217914969 identifies a Mass Save qualified Central HP <5.4 tons from HEIL with outdoor unit N5H9V48*K*AAA* and indoor unit EVM5X48M21A*.
Eligible Central HP <5.4 tons

AHRI 217914974

AHRI 217914974 identifies a Mass Save qualified Central HP <5.4 tons from HEIL with outdoor unit Q5H9V48*K*AAA* and indoor unit EVM5X48M21A*.
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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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Randy J.

Thanks to Andrey for an amazingly quick response to my request for a service call. He diagnosed and fixed my issue within 24 hours of my asking for help. Excellent service. Thanks.

Terry S.

Excellent service from best tech!

Jack B.

Andrey always does a great job.

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.

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