The sticker on the side of the doohickey in the video really gives the whole thing a feeling of "a dude makes these by hand in his garage." I looked up "AC pool

The sticker on the side of the doohickey in the video really gives the whole thing a feeling of "a dude makes these by hand in his garage." I looked up "AC pool heat exchanger" and lo and behold, the same company showed up as the first result: https://www.hotspotenergy.com/titanium-pool-heat-exchangers/ https://www.hotspotenergy.com/titanium-pool-heat-exchangers/