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

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


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!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.