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Day & Night Gas furnace *80CTL0702120B*

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Day & Night Day & Night AHRI Furnace - Ion 80 Variable-Speed Gas Furnace Gas furnace Repair, maintenance, and replacement planning
Day & Night *80CTL0702120B* product image

Technical Specifications

Product Specs

  • AHRI unit role: Furnace
  • AHRI model/pattern: *80CTL0702120B*
  • AHRI records represented: 207
  • AHRI equipment type: Central HP
  • AHRI tonnage: 2
  • AHRI refrigerant: R-454B
  • Verified catalog model: *80CTL0702120B*
  • Verified product family: Ion 80 Variable-Speed Gas Furnace
  • Verified catalog brand: Day & Night
  • Verified model family: F80CTL
  • AHRI model/pattern: *80CTL0702120B*
  • Nominal input: 70,000 BTU/h input
  • AFUE family: 80%
  • Heating stages: two-stage
  • Blower: variable-speed
  • NOx classification: standard
  • Cabinet width code: 21
  • Application: matched gas furnace for split-system air conditioner or heat pump combinations
  • Official product page: https://www.dayandnightcomfort.com/en/us/products/gas-furnaces/ion-80-variable-speed-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 215667848

AHRI 215667848 identifies a Mass Save qualified Central HP <5.4 tons from DAY & NIGHT with outdoor unit C5H0V24*K*AAA* and indoor unit EA*5X37M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215668672

AHRI 215668672 identifies a Mass Save qualified Central HP <5.4 tons from DAY & NIGHT with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X37M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215668832

AHRI 215668832 identifies a Mass Save qualified Central HP <5.4 tons from DAY & NIGHT with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X42M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215668992

AHRI 215668992 identifies a Mass Save qualified Central HP <5.4 tons from DAY & NIGHT with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X43M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215669148

AHRI 215669148 identifies a Mass Save qualified Central HP <5.4 tons from DAY & NIGHT with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X48M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215669308

AHRI 215669308 identifies a Mass Save qualified Central HP <5.4 tons from DAY & NIGHT with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X60M24A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215669478

AHRI 215669478 identifies a Mass Save qualified Central HP <5.4 tons from DAY & NIGHT with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X61M21A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215669628

AHRI 215669628 identifies a Mass Save qualified Central HP <5.4 tons from DAY & NIGHT with outdoor unit C5H0V36*K*AAA* and indoor unit EA*5X61M24A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215669794

AHRI 215669794 identifies a Mass Save qualified Central HP <5.4 tons from DAY & NIGHT with outdoor unit C5H0V36*K*AAA* and indoor unit ESH5X36M12A*+WALLCON.
Eligible Central HP <5.4 tons

AHRI 215669986

AHRI 215669986 identifies a Mass Save qualified Central HP <5.4 tons from DAY & NIGHT with outdoor unit C5H0V36*K*AAA* and indoor unit ESH5X42M12A*+WALLCON.
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Service planning

How GreenFlow handles *80CTL0702120B* 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 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.

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.

Neal V.

In an industry that often fraught with contractors taking advantage of homeowners, Andrey was honest with his assessment and willing to install a product acquired elsewhere (most want that margin themselves), patiently answered my questions (I’m an engineer so like to understand what’s happening), and proactively offered practical...

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