The purpose of AHRI Standard 1250 (I-P), and its metric equivalent AHRI Standard 1251 (SI), is to establish a uniform method for rating the performance of Walk-in Coolers and Freezers (WICF).
Specifically, the standard:
The standard applies to the mechanical refrigeration equipment for WICFs, which can be an integrated single package unit or separate unit cooler and condensing unit sections (often called "split systems").
In short, AHRI 1250/1251 provides the rules to ensure that when manufacturers advertise the performance (like cooling capacity and energy efficiency) of a walk-in cooler or freezer system, they are all measuring and reporting those numbers in the exact same way. This helps engineers, contractors, and users make informed, apples-to-apples comparisons.
| SDO | AHRI: Air-Conditioning, Heating, and Refrigeration Institute |
| Document Number | 1250 (I-P) |
| Publication Date | Sept. 15, 2025 |
| Language | en - English |
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