News Details
AHRI Launches Certification Programs for Unit Coolers, Variable Frequency Drives and Datacom Cooling
09 January 2014

The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) has launched three new certification programs.
Unit Coolers
AHRI’s 39th certification program is for unit coolers, which are typically utilized in refrigerated warehouses. The equipment in the Unit Coolers Certifi cation Program is rated and tested in accordance with AHRI Standard 420, Performance Rating of Forced-Circulation Free-Delivery Unit Coolers for Refrigeration. Unit coolers are factory-made, and include means for forced air circulation and elements by which heat is transferred from air to refrigerant without any air resistance from external elements. The certified ratings for the unit coolers program include cooling capacity and rated fan power. This program applies to production models of Unit Coolers, which meet the following criteria: 

  • Use refrigerant R-404A or R-507A for Direct Expansion (DX) Coils, or R-717 for DX and/or liquid overfeed coils;
  • Aluminium fin material;
  • Single vertical coil;
  • Horizontal-only air flow direction (the air flows to or from the inlet face of the coil from or to the fan inlet, with no change in direction); and 
  • Axial fans only. Performance data for certifi ed products in this program will be available in the AHRI Directory of Certified Product Performance at 
Variable Frequency Drives 
VFDs produce fast-rising, high frequency pulses of electrical energy to control and power motors. The equipment in the VFD Certification Program is rated and tested in accordance with ANSI/AHRI Standard 1210, Performance Rating of Variable Frequency Drives. Once considered a ‘high tech’ option for only the most elaborate HVACR systems, VFDs have been in the mainstream for several years, providing better efficiency with improved reliability.
Datacom Cooling
Datacom cooling equipment is used to remove the immense heat generated in computer rooms and data centres, and support consistent information sharing and processing around the world. Equipment in the program will be rated in accordance with AHRI Standard 1360, Performance Rating of Computer and Data Processing Room Air Conditioners. AHRI is currently soliciting quotes for laboratory testing and expects to launch the program in January 2014.

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