Algodoo

Nice work on the scene!

I'm familiar with electrical low pass, high pass, and band pass filters but using those filter concepts for thermal control is new to me. It does make sense, though. My home heating/cooling thermostat probably makes use of those filters for more consistent and smoother heating and cooling.

Suggestion: I think it would be interesting and educational to create a scene that shows the effects of all three types of filters that I mentioned above.

It's not thermal control that is modeled. It's material temperature change due to temperature changes in the surrounding air. For example, if you have a milling machine in your garage and the room temperature is regulated +/-5°F, then the milling machine material temperature fluctuation would be a fraction of the room temperature change. Thanks for the suggestions.
The filters in your heating system are for collecting dust.

"The filters in your heating system are for collecting dust. "