I'm looking forward to adding your video to my Youtube favorites.
We aren't lucky enough to be in the sun belt, but being retired, we have lower HW needs these days.
My guess is a small solar HW system would allow us to keep the oil-burner turned off most of the year.
Right now, it's running about 1/2 hour each morning (1/2 gallon = $1.95)
$59.31 a month (most of the year) isn't too bad.
But, I worry about the day when it's $10 or $20 a gallon..
I will be looking at solar HW more seriously this winter.
I do not want to be spending my meager retirement check on stinkin oil!
Investing in any kind of durable solar hardware seems to be a good idea to me these days.
My thinking is: Buy it now, before purchasing power drops lower..
Or, before any extra heavy wealth redistribution sends me to the poor house.