Confused about Energy Star ratings
Looking at a refrigerator’s Energy Star Ratings, and getting confused. Let’s take the Whirlpool model WRB322DMB* as an example.
1. Here, Energy Star claims this model is a 22.1 cf refrigerator, use is:
= 584 kwh annually in the US
= 423 kwh annually in Canada. http://pdf.lowes.com/energyguides/883049288505.pdf
How can this be? It runs 24/7/365 in both countries, so the only factors affecting power use would be how often it is opened and the ambient temperature around it. Is this difference due to the average temp in Canada being lower, so when Canadians open their refrigerator it takes less time to recover?
2. Here, the exact same model is rated as a 21.9 cf refrigerator that uses
= 404 kwh annually in both the US and Canada: https://www.whirlpoolinsidepass.com/assets/pdfs/product/EnergyGuide/WRB322DMBM_Energy%20Guide_EN.pdf
3. Here, the Kitchen Aid “clone” of the same model (Kitchen Aid is a Whirlpool Brand), with same features, is rated to use
= 500 kwh annually in the US
= 423 kwh annually in Canada http://pdf.lowes.com/energyguides/883049361062.pdf
How can the differently shaped handles between this and the above result in a 84 kwh decrease (compared to #1) or a 96 kwh increase (compared to #2) in the US, but not affect kwh usage in Canada?
Searching the energystar.gov website for data on model WRB322DMB* results in a data matching item #1 above. What can possibly account for these discrepancies? Can we simply not trust the energy star labels? What is going on here?
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