[Logic]

I was asked to have a look at a stove-oven recently and was flabbergasted to discover they have chimneys!
And what seems to be air intakes below the glass window in front.

So; heat the oven at great expense,
then
exhaust all the hot air out into the kitchen.
Then
cool the kitchen at great expense!

I was flabbergasted! I was angry!
I was shoving pot scourers into that scam-ney as fast as I could!

I was happy to hear that my friend's electric bill had dropped even more than the temperature in her hot kitchen!