Energy Conservation Program for Certain Commercial and Industrial Equipment: Test Procedure for Commercial Water Heating Equipment

On May 9, 2016, the U.S. Department of Energy (DOE) published a notice of proposed rulemaking (NOPR) to amend its test procedures for commercial water heaters, unfired hot water storage tanks, and hot water supply boilers (henceforth, ``commercial water heating (CWH) equipment''). That proposed rulemaking serves as the basis for this final rule. Specifically, this final rule incorporates by reference the most recent versions of relevant industry standards; modifies the existing test methods for certain classes of CWH equipment; establishes new test procedures for determining the efficiency of commercial heat pump water heaters and standby loss for instantaneous water heaters and hot water supply boilers; clarifies test set-up and settings for various classes of CWH equipment; revises the certification requirements for CWH equipment; and establishes associated definitions.