Do domestic hot water heaters fall into this category? They aren't listed in the reference manual, nor can I find mention of them on this site. Energy Star does have a bunch of rated models, but only for gas or propane. The few electric models they have rated are only 50 gallons or larger. Can hot water heaters be excluded from these calcs altogether, and furthermore do they belong in calcs for EAc1.3 instead?
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Suzanne Painter-Supplee, LEED AP+ID&C
PrincipalSEESolutions LLC
126 thumbs up
February 11, 2014 - 11:17 am
This credit specifically excludes hot water heaters because they fall under "regulated," even though there is an Energy Star rating and most Energy Star appliances are 'process.' The key with Energy Star is not to look for the actual listing but the STANDARD, then compare the standard against what you are specifying. Does that help? Here's a link to the standard. http://www.energystar.gov/index.cfm?c=water_heat.pr_crit_water_heaters
Geoffrey Brock
Director of SustainabilityIPS-Integrated Project Services
7 thumbs up
February 11, 2014 - 11:20 am
If the answer is "yes, they are excluded," then yes, thank you!
I do see the distinction between regulated and process load in table 1, but it wasn't clear to me elsewhere in the section where the distinction was made, and the only CIR I could find on the topic was from way back in 2009 before water heaters were even rated in Energy Star. Do you have a source for this answer? Thanks!