Clay Pot Heater

Came across this on how to build a clay pot heater, I've built a clay pot heater out of 2 clay pots and using a 18 ounce candle. It did throw heat, but not enough to heat a room, don't know about this one:


https://www.skilledsurvival.com/clay-pot-candle-heater/

Here's another version of the clay pot heater that I just came across that uses a battery & a fan to blow the heat out further:

Clay Pot Heater With Fan - Powered by Candles (DIY)
https://www.instructables.com/Clay-Pot-Heater-With-Fan-Powered-by-Candles-DIY/

  (SNIP) ... The main heating element is ordinary candles, but these doesn't work on their own to heat a garage. The reason is because warm air raises by the cold air pushing it upwards. By using a clay pot and a 90 degree metal pipe we can control the heat, making it a more effective.   ---CONTINUED---

Candle Powered Heater! (Improved!!) - DIY Radiant Space Heater! (w/fan!) - Clay Pot Heater
https://www.youtube.com/watch?v=yUYm0x3b_vY

Candle Powered Heater! (Improved!!) DIY Radiant Space heater! (with fan!!). Easy DIY. Produces 170F+ Temps. Since about half of all the heat from a clay pot