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How much energy am I wasting by toasting my bagel in my big oven? Should I get a toaster?

  • Are these frozen bagels, or (reasonably) fresh? If fresh and/or day old, you can heat up a cast iron pan, and then set the cut side down on it, and wait a minute or so. It also has the advantage that it doesn't heat the outside so much that you can't hold it. – Joe Jun 8 '15 at 0:57
  • They arn't fozen, but they are refrigerated. Neat idea, but I don't like the insides of my bagels toasted, just the outsides. – Vivek Maharajh Jun 8 '15 at 18:31
  • Are you using a broiler in the oven, or are you preheating the whole oven just for toasting? Putting a bagel under a broiler for a quick toast will probably waste more energy than a toaster, but it's still just heating one element for a relatively short time. If you're heating a big oven several hundred degrees just to toast a bagel, obviously that's going to waste a lot more energy. – Athanasius Jun 11 '15 at 15:32
  • I am preheating the entire oven. I don't know what broiling is. I vaguely remember seeing it on my oven, I'll take a look when i go home. – Vivek Maharajh Jun 11 '15 at 20:49
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A toaster is more efficient than a toaster oven, which in turn is far more efficient than heating an entire conventional oven.

Toaster statistics: Approximate time to make toast – 4 minutes
Watt measured while running – 820 W
Resulting electricity usage – 0.055 kWh

vs

Toaster oven statistics: Approximate time to make toast – 5 minutes
Watt measured while running – 1110 W
Resulting kWh usage – 0.093

Lower kWh usage means the toaster is more efficient than a toaster oven.

Here is the source for the comparison of toaster vs toaster oven.

Now, you can compare the less efficient toaster oven to a conventional oven here (or to a microwave, but you don't really use that for toast). Toaster ovens use about 1/3 to 1/2 the energy of a conventional oven. So if a toaster uses less than a toaster oven, and a toaster oven uses far less than an oven, then clearly a toaster would be far less wasteful than the oven.

So YES, buy a toaster!

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