Aire-Flo HVAC Age Lookup Tool

Decode your Aire-Flo serial number to find the manufacturing date, system age, and maintenance recommendations. Free and instant. No account needed.

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Aire-Flo HVAC System

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Finding Your Aire-Flo Serial Number

Check these four spots on your HVAC system

HVAC UNITMODELCA16NA036SERIAL5019X30312MFG05/20194Rating PlateTop or rear of outdoor unitManufacturer nameplate3Indoor Air HandlerInside the cabinet doorAir handler or furnace label2Electrical PanelInside the access doorBottom front of outdoor unit1Outdoor UnitData plate on the sideMain serial number label

Common Locations

1
Outdoor unit
data plate on the side
2
Electrical panel
inside the access door
3
Indoor air handler
inside the cabinet door
4
Rating plate
top or rear of the unit

What to Look For

  • White or metallic manufacturer sticker
  • Labeled "Serial No." or "S/N"
  • Typically 8–12 characters long
  • Usually near the model number

Can't find it? Try the electrical access panel on the front of the outdoor unit or inside the air handler cabinet.

Serial Number Examples

Aire-Flo
5196G123456204F54321
First 4 digits = week and year of manufacture

Don't worry if yours looks different — each brand has multiple formats and our system can decode most variations.

About Aire-Flo HVAC Systems

Owned by Lennox International

Aire-Flo is Lennox International's lowest-price residential brand, part of the same Allied Air Enterprises group as AirEase and Armstrong Air. The equipment is basic by design, aimed at replacement jobs where budget is the primary concern and efficiency ratings matter less.

Allied builds it at the same Iowa facility using Lennox engineering specs, so the mechanical reliability is solid despite the lower price point. Serial numbers use the same format as all Allied and Lennox brands: four digits at the start encoding the manufacturing week and year.

Common Aire-Flo HVAC Models & Series

The most-installed Aire-Flo residential systems on the market today, organized by tier. Knowing your series helps narrow down service parts and warranty terms.

SeriesTypeTierEfficiencyNotes
4AC16L Air ConditionerAir ConditionerMid-rangeUp to 16 SEER2Single-stage scroll; Aire-Flo's higher-tier outdoor unit.
4AC14L / 4AC13LAir ConditionerEntryUp to 14.3 SEER2Single-stage; the volume builder unit.
4HP16L / 4HP14L Heat PumpHeat PumpEntryUp to 14.3 SEER2 / 8.1 HSPF2Single-stage heat pump for moderate climates.
92G1UH Gas FurnaceGas FurnaceMid-rangeUp to 92 AFUESingle-stage condensing furnace; balances cost and efficiency.
80G1UH Gas FurnaceGas FurnaceEntryUp to 80 AFUESingle-stage 80% furnace for mild climates.

Aire-Flo HVAC Quick Facts

Warranty

Aire-Flo equipment carries a 10-year parts warranty and 10-year compressor warranty when registered within 60 days. Without registration, parts coverage drops to 5 years. Heat exchangers on condensing furnaces typically include a 20-year limited warranty.

Expected Lifespan

AC / Heat pumps: 12 to 17 years
Furnaces: 15 to 22 years

Where It's Built

Orangeburg, South Carolina (Allied Air Enterprises plant) — the same facility that builds AirEase, Armstrong Air, Concord, and Ducane.

Price Positioning

Budget tier — typically the lowest-priced Allied brand, often 30-40% less than Lennox-branded equivalents at install.

Known Aire-Flo Issues to Watch For

A short list of patterns reported on Aire-Flo equipment. Most have been addressed with revised designs or service bulletins, but they're useful context if you're diagnosing an older system.

  • Aire-Flo's entry-tier price comes from leaner sheet-metal construction; coastal installs are more prone to base-pan corrosion than higher-tier Allied or Lennox units.
  • No communicating-thermostat ecosystem; pairs only with conventional 24V thermostats, which limits zoning and staging features.
  • Dealer network is smaller than other Allied brands, so warranty service responsiveness depends heavily on the local distributor.

Aire-Flo HVAC FAQs

Aire-Flo follows the standard Allied placement: data plate on the rear-right of the outdoor condenser, and inside the burner compartment of the furnace. Serials are 10 characters with the WWYY date code as the first 4 digits.

Related HVAC Brands

Aire-Flo shares a parent company with these brands -- they often use similar serial number formats and components.

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