Coil of Duty: Reading a Carrier® Chilled Water Coil model 28NC.

July 05, 2025

Coil of Duty: Decoding a Carrier Chilled Water Coil Model 28NC

Reading coil model numbers might be part of the job, but it shouldn’t feel like a puzzle. In this article, we're breaking down the Carrier Chilled Water Coil model 28NC, specifically the upper coil model 28NC2022FGA207AL, to help you understand what each part of the number means.

Carrier Chilled Water Coil

Chilled water coils are commonly found in Carrier air handlers like the 39N and 39T models. The model number is more than just a string of letters and numbers — it’s a code that tells you everything you need to know when quoting or replacing a coil. Let’s take a closer look at the breakdown of 28NC2022FGA207AL:

  • 28NC: This indicates it's a chilled water coil.
  • 2: Shows the coil is installed vertically and has no coating. If there was a letter here, it would mean a baked phenolic coating (like Heresite®).
  • 0: Represents the number of rows. A "0" stands for a 10-row coil.
  • 22: Indicates the number of tubes in the face of the coil, which helps determine the finned height. For ½” tubes, 22 tubes usually mean a finned height of 27.5 inches.
  • F: Stands for full circuiting, meaning all tubes connect to both supply and return headers.
  • G: Refers to copper fins with 8 fins per inch and stainless steel casing.
  • A: Indicates a tube wall thickness of .017 or .016 inches.
  • 207: Finned length in centimeters (207 cm = 81.5 inches).
  • A: Denotes a steel MPT connection.
  • L: Specifies left-hand airflow. An "R" would mean right-hand airflow.

There are countless combinations for Carrier chilled water coils, and understanding them can save time and prevent mistakes. Whether you're trying to decode a model or need help identifying a specific coil, the team at Nationwide Coils is here to help. We’ve been in the industry for almost two decades and offer expert insights into commercial HVAC products and services.

Stay tuned for our next article, where we’ll break down another common Carrier model: 28CW1620DA1112---K.

The Nationwide Coils Blog is written by HVAC professionals with years of experience. We aim to provide valuable information and resources to help you make informed decisions. Feel free to email us anytime with your questions or needs.

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