Tealight Space Heater - Ask Professor Puzzler
How to turn four tealights, a clay pot, and some bricks into a space heater. Important safety concerns!www.theproblemsite.com
Don’t Heat your Room with Tea Candles
www.notechmagazine.com
This idea has been making the rounds for a long time. Ive seen it debunked a lot of ways. Basic thermodynamics tells us that just burning the candles without the pot will heat the space even more effeciently. You would need to burn about 50 candles to equal an hours output from a 1500w space heater, assuming the candle burns for an hour. Dont do that, candles pollute the air badly.
I think part of it is that for one purpose it works well/safer - the pot traps heat/warms up and works as a hand warmer better than just trying to put hands over candles. Then someone makes it out to be a lifehack space heater and goes viral.