1. (a) Sampling plan for selection of units for testing.

   1. (1) The requirements of § 429.11 are applicable to pool heaters; and

   2. (2) For each basic model of pool heater, a sample of sufficient size shall be randomly selected and tested to ensure that any represented value of the thermal efficiency or other measure of energy consumption of a basic model for which consumers would favor higher values shall be less than or equal to the lower of:

      

      1. (i) The mean of the sample, where:

         Or,

      2. (ii) The lower 97 1/2 percent confidence limit (LCL) of the true mean divided by 0.95, where:

         

2. (b) Certification reports.

   1. (1) The requirements of § 429.12 are applicable to pool heaters; and
   2. (2) Pursuant to § 429.12(b)(13), a certification report shall include the following public product-specific information: The thermal efficiency in percent (%) and the input capacity in British thermal units per hour (Btu/h).

[76 FR 12451, Mar. 7, 2011; 76 FR 24769, May 2, 2011; 89 FR 82061, Oct. 9, 2024; 90 FR 43379, Sept. 9, 2025]