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Matt Ferrell

Creator and host of the YouTube channel "Undecided with Matt Ferrell" (1.7M+ subscribers) on sustainable and smart technology, and host of the Still To Be Determined and Trek In Time podcasts.

Sep 28, 2025

5:11
What are some other examples of systems that you've installed?
5:13
Well, I have a geothermal system, which is the most efficient heating and cooling system you can get, but at a cost.
5:19
Air source heat pumps are much cheaper and they do a very good job.
5:24
But like I said, I wanted to kind of go as efficient as I could, so I was willing to spend that little extra money.
5:28
And one of the reasons I'm bringing this up is, looking at your house as a giant organism, it's the excess heat that is produced from the HVAC system, feeds into a de-super heater that dumps that heat into a holding tank, then feeds into my heat pump water heater.
5:45
So the heat pump water heater has to work far less because it's heating water that's already preheated.
5:52
It's like $250 worth of energy every year to heat my water.
6:57
What adjustments maybe did you make in your everyday life?

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