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The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) received an advance copy of the U.S. Department of Energy's Final Rule for revising the federal minimum efficiency standards for residential water heaters, direct heating equipment, and pool heaters. The rule is expected to be published in the Federal Register soon.
AHRI noted that the new minimum standards in the Final Rule for lower-volume gas storage units are slightly lower than what was reported by AHRI In December 2009.
New minimum standards for higher volume electric and gas storage water heaters, on the other hand, are more than twice as high as the originally proposed level. AHRI believes this new standard will mandate heat pump technology be used.
The pool heater minimum is lower than the level proposed in December. The final direct heating equipment requirements are lower than the proposed levels but still increase the current requirements.
The complete Final Rule can be downloaded in PDF format from the DOE at:
http://www1.eere.energy.gov/buildings/appliance_standards/residential/pdfs/htgproducts_finalrule_notice.pdf
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