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AirQuest Gas furnace *80CSU0802120B*

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

Technical Specifications

Product Specs

  • AHRI unit role: Furnace
  • AHRI model/pattern: *80CSU0802120B*
  • AHRI records represented: 151
  • 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: AirQuest
  • 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.airquestcomfort.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 217909451

AHRI 217909451 identifies a Mass Save qualified Central HP <5.4 tons from AIRQUEST with outdoor unit N5H9V36*K*AAA* and indoor unit EVM5X43M21A*.
Eligible Central HP <5.4 tons

AHRI 217909458

AHRI 217909458 identifies a Mass Save qualified Central HP <5.4 tons from AIRQUEST with outdoor unit Q5H9V36*K*AAA* and indoor unit EVM5X43M21A*.
Eligible Central HP <5.4 tons

AHRI 217910370

AHRI 217910370 identifies a Mass Save qualified Central HP <5.4 tons from AIRQUEST with outdoor unit N5H9V36*K*AAA* and indoor unit EVM5X48M21A*.
Eligible Central HP <5.4 tons

AHRI 217910377

AHRI 217910377 identifies a Mass Save qualified Central HP <5.4 tons from AIRQUEST with outdoor unit Q5H9V36*K*AAA* and indoor unit EVM5X48M21A*.
Eligible Central HP <5.4 tons

AHRI 217911551

AHRI 217911551 identifies a Mass Save qualified Central HP <5.4 tons from AIRQUEST with outdoor unit N5H9V36*K*AAA* and indoor unit EVD5X36M21A*.
Eligible Central HP <5.4 tons

AHRI 217911558

AHRI 217911558 identifies a Mass Save qualified Central HP <5.4 tons from AIRQUEST with outdoor unit Q5H9V36*K*AAA* and indoor unit EVD5X36M21A*.
Eligible Central HP <5.4 tons

AHRI 217914137

AHRI 217914137 identifies a Mass Save qualified Central HP <5.4 tons from AIRQUEST with outdoor unit N5H9V36*K*AAA* and indoor unit EVD5X48M21A*.
Eligible Central HP <5.4 tons

AHRI 217914144

AHRI 217914144 identifies a Mass Save qualified Central HP <5.4 tons from AIRQUEST with outdoor unit Q5H9V36*K*AAA* and indoor unit EVD5X48M21A*.
Eligible Central HP <5.4 tons

AHRI 217914966

AHRI 217914966 identifies a Mass Save qualified Central HP <5.4 tons from AIRQUEST with outdoor unit N5H9V48*K*AAA* and indoor unit EVM5X48M21A*.
Eligible Central HP <5.4 tons

AHRI 217915370

AHRI 217915370 identifies a Mass Save qualified Central HP <5.4 tons from AIRQUEST with outdoor unit N5H9V48*K*AAA* and indoor unit EVM5X49M21A*.
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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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Murali S.

HVAC technician was punctual, followed up well, completed quick repairs, ensured the issue was resolved, and provided helpful recommendations.

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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...

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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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Green Flow and the people who work there are terrific. Vlad and Andre are excellent. Andre was very helpful. He was punctual, respectful, efficient and knowledgeable. He did not try to sell me something I didn’t need ( as others have done before). I was charged $99 which...

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