One great advantage of high thermal mass, combined with smart venting, is a fairly constant temperature in the house using afternoon heat and early morning cool without any heating or cooling cost.
My parents house is a century old. It is built from Belgian bricks that contain a core of solid rock(!) which has high thermal mass. They can sit through hot summer days without A/C no problem.
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
![](https://images.spritmonitor.de/544051_25.png) lifetime FE over 0.2 Gigameter or 0.13 Megamile.
![](https://ecomodder.com/forum/fe-graphs/sig7127a.png)
For confirmation go to people just like you.
For education go to people unlike yourself.
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