How long do Airquest HVAC systems last?

Most Airquest air conditioners and heat pumps run 12 to 17 years, while Airquest furnaces typically last 15 to 20 years when serviced annually. After about year 12 the cost of repairs tends to climb and efficiency drops noticeably compared with a current SEER2-rated unit.

Should I repair or replace my old Airquest unit?

A common rule of thumb: multiply the repair cost by the age of the system. If that number is over $5,000, replacement usually makes more financial sense. Airquest systems older than 12 years that still use R-22 refrigerant are particularly strong replacement candidates because R-22 has been phased out and recharging it has become very expensive.

Airquest HVAC Age Lookup Tool

Airquest is the most affordable brand from ICP, part of Carrier Global, built on the same Lewisburg, Tennessee line as Heil and Tempstar. As a value line, the age tells you whether to keep maintaining it or start planning a replacement. Enter your Airquest serial number to find the manufacturing date and system age for free.

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Airquest HVAC System

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Finding Your Airquest Serial Number

Check these four spots on your HVAC system

Common Locations

Outdoor unit

data plate on the side

Electrical panel

inside the access door

Indoor air handler

inside the cabinet door

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

Airquest

E072514528R921500600

2nd–3rd characters = year, 4th–5th = week of that year

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

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About Airquest HVAC Systems

Owned by Carrier Global (ICP)

Airquest is ICP's lowest-cost residential brand, aimed at replacement work where the homeowner is working with a tight budget. It has fewer options and trim levels than Heil or Tempstar, but uses the same core mechanical components built in the same ICP factories.

ICP is a Carrier Global division. Serial number format is the same across all ICP brands: two-digit year in positions 2 and 3, manufacturing week in positions 4 and 5.

Common Airquest HVAC Models & Series

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

Series	Type	Tier	Efficiency	Notes
C4A4 Air Conditioner	Air Conditioner	Mid-range	Up to 16 SEER2	Single-stage scroll compressor; Airquest's higher-tier outdoor unit.
N4A3 / N4A4	Air Conditioner	Entry	Up to 14.3 SEER2	Single-stage; the value-tier seller.
N4H4 Heat Pump	Heat Pump	Entry	Up to 14.3 SEER2 / 7.5 HSPF2	Single-stage heat pump for moderate climates.
G9MAE Gas Furnace	Gas Furnace	Mid-range	Up to 96 AFUE	Two-stage gas valve; same chassis as Heil/Tempstar G9MAE.
N9MSE Gas Furnace	Gas Furnace	Entry	Up to 80 AFUE	Single-stage 80% furnace common in mild climates.

Airquest HVAC Quick Facts

Warranty

Airquest offers a 10-year parts warranty when registered within 90 days; unregistered units default to 5 years. Compressor coverage runs 10 years on most condensers but the longer parts warranty available on Heil and Tempstar typically isn't extended to the Airquest brand.

Expected Lifespan

AC / Heat pumps: 12 to 17 years
Furnaces: 15 to 20 years

Where It's Built

Lewisburg, Tennessee (ICP's main residential plant). Airquest shares production with Heil, Tempstar, Comfortmaker, Arcoaire, Day & Night, and Keeprite.

Price Positioning

Budget tier — generally the lowest-cost ICP option, often 25-35% less than Tempstar at install.

Known Airquest Issues to Watch For

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

•Airquest entry-tier units use the same N4A4/N4H4 base chassis as other ICP value brands; service-valve packing has been a noted maintenance item on units installed before 2017.
•The cabinet sheet metal is thinner than premium ICP brands, so coastal installs see higher base-pan corrosion rates after year 7-8.
•ICP's Observer communicating thermostat is not typically supported on Airquest-branded equipment — pair with a standard 24V thermostat.

Airquest HVAC FAQs

Airquest's data plate is on the side of the outdoor condenser, near the service valves. ICP-family serials are 10 characters: a factory letter, then YY in positions 2-3, then WW in positions 4-5.