Certain objects do not transfer heat correctly.

I have a game where a coal generator @1,689.2 degrees fahrenheit is sitting in a puddle of water @74.6 degrees. The water won't heat up. In the same game, I have liquid oxygen @-294.34 degrees below zero sitting on top of contaminated water @90.3 degrees, with carbon dioxide above the liquid oxygen @79.2 degrees. I have solid oxygen @-185.76 degrees below, sitting on a gas permeable tile @75.6 degrees, surrounded on three sides (as well as the square it occupies) by contaminated oxygen @80 degrees. So yeah, there's a huge issue with heat transfer.

Yep. I tested it about as throughly as I could think to the other day. Liquids do not exchange heat with gasses ever, Buildings retain the heat their components and destroy or create heat out of nothing.

 

Now, they'll both transmit through natural non-built solid blocks though which can allow for heat transfer from gasses to liquids at an abysmally small spead.