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#1 |
Apprentice EcoRenovator
Join Date: Dec 2008
Location: Santa Fe, NM
Posts: 184
Thanks: 9
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![]() Thanks to a $200 state appliance rebate program (and $30 utility rebate) I've upgraded our refrigerator to a 2010 Energy Star model. Thanks to my Kill-A-Watt, I've measured how much electricity we are no longer wasting.
I was able to recycle a 1990's vintage refrigerator we have in a rental property. We swapped a 2002 fridge to the rental and put the new Energy Star fridge in our home. Other than age, each of the three refrigerators was comparable with a top-mounted freezer, 16 to 18 cubic feet and no ice-maker. I tried to keep operating conditions similar for the comparison, although my test favored the oldest fridge as I never opened the door during the test. Refrigerator Energy Use Comparison 1990 Fridge: 4.62 kW·h / 26.7166 hours = 0.1729 kW·h/hour = 4.15 kW·h/day = 1514.83 kW·h/year 2002 Fridge: 1.54 kW·h / 40 hours = 0.0385 kW·h/hour = 0.924 kW·h/day = 337.26 kW·h/year (77.7% less energy use than 1990 fridge) 2010 Energy Star(+) Fridge: 1.36 kW·h / 48 hours = 0.02833 kW·h/hour = 0.68 kW·h/day = 248.2 kW·h/year (26.4% less energy use than 2002 fridge) Notes:
I've written a longer article here: Kill Your (old) Refrigerator | EcoDaddyo.com FYI, Tim
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#2 |
Administrator
Join Date: Aug 2008
Location: Germantown, WI
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![]() Wow, thats quite the step forward. I've been meaning to measure my fridge lately. I just keep forgetting.
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#3 |
Super Moderator
Join Date: May 2009
Location: Warsaw, Poland
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![]() Wow, that '90's fridge was a hog. It's hard to believe how much refrigerators have changed in only a few years. If only car companies could increase fuel efficiency fourfold in a decade...
EDIT: I've had my fridge on the Kill-a-Watt for the last 2.5 weeks and I just had a look: 11.65 kWh in 400.1 hours. 11.65kWh/400.1h=0.029 kWh per hour = 0.70 kWh/day = 255 kWh/year. You beat me, Tim ![]() It's been hot recently, so the temperature in the kitchen is around 21-22°C. The kitchen temperature in the winter (exept when cooking/baking) is 18-19°C, so maybe then I'll use slightly less. The brand is ARDO, model CO 2210 SHX, rated at 256 kWh/year = 0.70 kWh/day. EDIT: Added more data (model, etc.). EDIT (04-04-2011): A recent test showed that lower kitchen temperatures (16°C-19°C) reduce the fridge's power consumption to 0.54-0.59 kWh/day. Last edited by Piwoslaw; 04-04-11 at 03:39 AM.. Reason: Added fridge data |
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#4 | |
Apprentice EcoRenovator
Join Date: Dec 2008
Location: Santa Fe, NM
Posts: 184
Thanks: 9
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![]() Quote:
Well, a new fridge beat an older fridge. I should check back in a year to see if the 2010 fridge maintains this level of efficiency. I've now got a mid '90's vintage 27" CRT Television plugged into the Kill-A-Watt. I'm curious to see how much power the old TV is eating. Tim
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#5 |
Lurking Renovator
Join Date: Aug 2010
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![]() We have refrigerator in our house and we are really shock every time they will give us a monthly electric bill. We wonder why it was too high. Then we realize that refrigerator is the reason. So now, we don't use our refrigerator and other appliances.
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Tags |
efficiency, energy star, refrigerator |
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