This doesn't sound like zero point nonsense - but it isn't anything new either.  What it sounds like he's talking about is just a liquid cooling setup, where you're using your household heating demands as your radiator... I built a bunch of S5's back in the day liquid cooled with that kit from China, and when it got cold it was like a free heater, since you're 'waste' heat is being used to heat your home.  Of course, I live in the desert, so this sort of application is more for novelty than practicality - but if you lived in a cold climate, and had something like radiant floors or baseboard heating, then it would probably be pretty cool.

As I said, other places have tried to do similar things in the past - the problem in most cases is the offset in savings just isn't that substantial - if you spend $100 to heat your home per month, then that's all you're going to save.  Sure, you'll get extra heat for free, but unless you want to live in a sauna you'll probably just end up venting it outdoor anyway.  Here's one of the more recent examples of this:

https://www.curbed.com/2017/11/9/16619032/bitcoin-mining-heat-homes-siberia-russia

Either way, it will be interesting to see what their implementation looks like... At worse it will be another liquid cooling option for people interested in those - either for the heat displacement benefits, or the noise benefit.