S4 E5 Do You Have a Thermos Too?

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S4 E5 Do You Have a Thermos Too?

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Hint hint: It is a really really big thermos!

Sources:

https://www.energystar.gov/products/heat_pump_water_heaters/how-it-works https://www.hotwater.com/info-center/how-do-tankless-water-heater-work.html https://www.efficientsystems.net/blog/cold-water-sandwich-effect-solution/

https://heatmyrv.com/collections/new-aqua-hot-systems-1 https://www.energystar.gov/sites/default/files/2024-07/ENERGY%20STAR%20Heat%20Pump%20Water%20Heater%20Technical%20Guide%20508C.pdf https://natural-resources.canada.ca/energy-efficiency/drain-water-heat-recovery

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