Heating

'''This page strongly relates to The Home... Check it out, why not? :3'''

Most spaces in the warehouse and boats are heated by wood burning stoves.

Thermodynamics
This is how heat and shit works. Straight from the depths of Yuna's university experience. It's also downloaded on Sven's PC in Tingle Tangle Tower!

https://cruncheez.files.wordpress.com/2015/06/thermodynamics-an-engineering-approach-5th-edition.pdf

Ethanol Burning
It might be possible to set up a distillery and build ethanol burners.