Hi All,
Since when I was a little boy refrigerators have had about 1/3HP electric motors, which run intermittently, except if you just loaded the refrigerator with 50 bottles of warm drink.
1HP=762Watts and 1/3HP = 250W roughly
Therefore the most a refrigerator will use is about 240W or four 60W light bulbs, and then only with a full load of hot contents when it will run all the time for a day or so.
It is just rubbish to claim older refigerators use the ridiculous amounts of energy "Home Guy" claims.
Anyway, don't believe me, go and measure it for yourself.
- Buy a 60 W bulb.
- Buy an energy meter ("Kill-A-Watt" or similar.)
- Measure the 60 w bulb for 24 hours. This will calibrate your energy meter. (Though all the ones I have checked have read correctly.)
4.Now measure your refrigerator.
Btw I repeat that the door sticker energy figures on new refrigerators are with a 32C (~90F) ambient temperature.
I guess you know how often your house is at 32C (90F) inside - actually in my house that is a never - so in real life your refrigerator or freezer will use way less energy than the door sticker says. This means way less savings on electricity than calculated on inflated door sticker consumption figures.
Go ahead and buy a new refrigerator if you want one - it is your money to spend as you wish - but if you believe the greenie rubbish "Home Guy" is sprouting then I've got a bridge or two you would love to buy too!
The efficiency of new refrigerators is higher than older refrigerators, but it isn't actually isn't a lot (maybe 10% or so) and it will take maybe 100 years to pay off the price of a new refrigerator in electricity savings.
Which is as my energy consumption figures I gave on my two refrigerators (repeated below) indicate.
Btw I know how to measure electrical things perfectly well, as you would expect from a professional Electrical Engineer.
And I'm not trying to sell you a refrigerator you don't need either, so I have no ulterior motive.
My advice? Change your refrigerator when it stops working, unless you really want a new refrigerator for other reasons.
Ross
Previous Post Repeated:
A 60 W bulb run continuously uses about 1.5 Kwhr of energy a day (60X24/1000).
I have two 14 Cubic Foot refrigerators, one made in 1969 and the other bought in the last few years. Both of them use far less energy than "a
60W bulb burning continuously".
The old refrigerator uses between 0.6 to 1 KWhr/day, whereas the new guy uses 0.4 to 0.9 KWhr/day. I've measured them daily with an energy meter for some years now. If the room is colder the new guy uses quite a bit less energy than the old guy.
I think the fan defrost function on the new refrigerator is more effective than the old guy heating up the cooling pad to melt the ice.
All the refigerator and freezer door sticker energy consumption figures are measured at 32C ambient which is way hotter than most peoples houses are on average. So most people will use quite a bit less energy than the door sticker says.
Ross