The Ultimate Guide to Daikin Furnace Codes

In the heating and cooling industry, manufacturers use codes to identify specific features of their products. These codes can be quite an intimidating string of letters and numbers when you first encounter them, but with a little bit of research and understanding, they become much less scary. Understanding these codes will help you better understand your Daikin furnace and its capabilities. The Daikin company manufactures several different types of furnaces that are identified by model numbers. Each model number has a specific code attached to it. This blog post will explore exactly what those codes mean and how they affect your new Daikin furnace. Read on for our complete guide to Daikin furnace codes.

What is a Daikin Furnace Code?

A code is a system of symbols and abbreviations that communicates information concisely and precisely. This can apply to words, letters, numbers, images, and icons. Codes often have specific meanings, and they may be recognized internationally. Furnaces have an acronym code that is located on the front of the unit. This code will indicate the type of furnace, size, and power source. The last two are particularly important to understand before purchasing a furnace. Understanding the meaning of the code will help you determine if the furnace you are looking at is the right one for you.

DAIKIN AC Codes – What They Mean

The first part of the code will indicate the type of AC unit it is. The other parts of the code are dependent on the type of AC unit. The most common type of AC unit is a single-phase AC. The AC code will indicate the number of phases, voltage, and amperage of the unit. Below is a table that lists the most common Daikin AC model numbers and their corresponding codes.

DAIKIN Furnace Efficiency Codes

The second part of the furnace code will indicate the level of efficiency of the unit. There are two different methods of measuring the efficiency of a furnace: AFUE and SEER. The AFUE rating is the Annual Fuel Utilization Efficiency rating, and SEER is the Seasonal Energy Efficiency Rating. The following table lists each of the Daikin furnace efficiency codes with their corresponding AFUE and SEER ratings.

Daikin DUCTless AC Codes – What They Mean

The third part of the code will indicate if the unit is ductless. A ductless AC unit works similarly to a window AC unit, but it doesn’t require ductwork to connect it to the central heating unit. This is a very convenient option for those who don’t have ductwork in their home. A ductless AC unit will have a code that starts with D. The following table lists each of the ductless Daikin AC model numbers and their corresponding codes.


Knowing what a Daikin furnace code means will help you determine if a specific model is the right one for your home. The best way to make sure you are purchasing the right furnace for your needs is to talk to an experienced HVAC contractor. They will help you understand the features each furnace offers, as well as walk you through the different code options.