The AHRI reference number for an air conditioner guarantees it to have Energy Star efficiency, the proper SEER rating, and the right amount cooling. Every new air conditioning unit sold must have the AHRI reference number.

What is AHRI reference number?

A residential central air conditioner has two main parts: the condensing unit installed outside of the house and the evaporator installed inside the ductwork. For an air conditioner to work up to specs or even to work at all, these two components must be properly matched.

Each condenser works properly with only a limited number of evaporator models. Each of the matches has a unique identifier — the AHRI reference number.

Another must have a component of the air conditioning system is air flow. Airflow is provided by the furnace (fan coil, air handler). For most of 14 SEER units and for virtually all higher SEER air conditioners and heat pumps, manufacturers also prescribe the particular furnace (air handler) models to be used. If this is the case, the furnace model is also included in AHRI number.

It brings the total number of must have components to three:

  1. Condensing Unit
  2. Evaporator (coil, blower coil)
  3. Furnace (fan coil, blower coil, air handler)

How To Check AHRI Reference Number?

On the invoice, among other information, you contractor must show three crucial pieces of data –

the model number for the condenser, the model number for the evaporator, and the AHRI reference number.

Before the evaporator gets concealed inside the ductwork for good, check that the model number on the evaporator matches the number on the invoice. Do the same for the condenser.

Go to HRAI Directory. Enter the AHRI reference number from the invoice as shown below. Click “Search”. The site will give you the model numbers for the condenser and for the evaporator, as well as the SEER rating for the air conditioner and its cooling capacity (See the picture at the bottom). The numbers must match the numbers on the invoice. (Symbol * stands for any digit or letter)

As we can see in the picture, this particular AHRI number 3598225 describes a system that also includes the furnace.
About AHRI. It stands for Air-Conditioning and Refrigeration Institute. AHRI is an internationally recognized leader in developing standards for HVAC products, as well as certifying their performance.

AHRI number


AHRI Reference Number
♦ AHRI Air conditioners and heat pumps
Replacing Air Conditioner
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