(a) The following definitions refer to water coolers:

1. (1) Water cooler means a freestanding device that consumes energy to cool and/or heat potable water. Products that have dispensing functions such as sparkling, alkaline, or flavored water, in addition to cold and hot water will also be recognized by the classification below.

   1. (i) Cold only units. Units that dispense cold water only.
   2. (ii) Cook and cold units. Units that dispense both cold and room-temperature water.
   3. (iii) Hot and cold units. Units that dispense both hot and cold water. Some units may also offer room-temperature water.

2. (2) Water source:

   1. (i) Bottle-type. A bottle or reservoir supplies water to the water cooler.
   2. (ii) Point of use (POU). The water cooler is connected to a pressurized water source.
   3. (iii) Conversion-type water cooler. A unit that ships as either bottle-source or POU and includes a conversion kit intended to convert the water cooler from a bottle-source unit to a POU unit or to convert a POU unit to a bottle-source unit.
3. (3) Compartment-type water cooler means a water cooler which, in addition to the primary function of cooling and dispensing potable water, includes a refrigerated compartment with or without provisions for making ice.

4. (4) Product family means a group of product models that:

   1. (i) are manufactured by the same manufacturer;
   2. (ii) use the same primary energy source; and
   3. (iii) have electrical characteristics that are essentially identical, and which do not have any differing physical or functional characteristics that affect energy consumption.

5. (5) Test modes.

   1. (i) On mode with no water draw. A test that records the 24-hour energy consumption of a water cooler with no water drawn during the test period. This test is also known as “standby”.

   2. (ii) On mode water draw performance (OMP). A metric for water draw performance that compares the energy delivered and energy consumed by the water cooler. The calculation for OMP can be found in section 7.6 of the ENERGY STAR Water Cooler Test Method, as incorporated by reference in section 509.61 of this Part.

      (b) Standard requirements for water coolers.

6. (1) Energy and water consumption requirements: Table 38: Requirements for Water Coolers *Note: POU, dry storage compartment, and bottled water coolers are included in this category.

   Water Cooler Category	Qualification Levels
   On Mode with No Water Draw
   Cold only and Cook and Cold units	≤0.16 kWh/day
   Hot and Cold units – Storage-type*	≤0.87 kWh/day
   Hot and Cold units – On Demand	≤0.18 kWh/day

7. (2) Significant digits and rounding.

   1. (i) All calculations shall be carried out with actual measured or observed values. Only the final result of a calculation shall be rounded. Calculated results shall be rounded to the nearest significant digit as expressed in the corresponding specification limit.
   2. (ii) Unless otherwise specified, compliance with specification limits shall be evaluated using exact values without any benefit from rounding.

8. (3) Additional reporting requirements.

   1. (i) Report the cold water capacity per hour, tested per ANSI/ASHRAE 18-2008 (RA 2013), section 5.7 Capacity Test for Ratings, in gallons per hour.
   2. (ii) For all hot and cold and hot, cook, and cold units, report the hot water capacity per hour, tested per ANSI/ASHRAE 18-2008 (RA 2013), section 5.8 Hot-Water-Dispenser Capacity Test, in number of exact 6 fl oz draws per hour.

   3. (iii) Report the type of refrigerant used in the respective water cooler unit, for example: R-410A, R-134a, or R-290. Optional reporting requirement of refrigerant global warming potential and charge amount.

      (c) Test procedures for assuring compliance with the standards established in subdivision (b) of this section.

9. (1) A representative model shall be selected for testing per the following requirements:

   1. (i) For qualification of an individual product model, the representative model shall be equivalent to that which is intended to be marketed and labeled as ENERGY STAR.
   2. (ii) For qualification of a product family, any model within that product family can be tested and serve as the representative model.

10. (2) When testing water coolers, the following test method shall be used to determine ENERGY STAR qualification. Table 39: Test Method for Water Coolers

    Energy Star Requirements	Qualification Levels
    On Mode with No Water Draw	Energy Star Test Method for Water Coolers (Rev. May-2013), as incorporated by reference in section 509.61 of this Part