If you had to list ten things that would be most missed in a post-TEOTWAWKI world, opening a tap and having free-flowing hot water whenever you want it would have to be near the top of the list for a lot of us.
In this article I’ll present an inexpensive solar water heater (SWH) which has gotta be the most efficient for the cost. I use this on my homestead almost six months of the year and in a non-freeze situation such as a greenhouse, this could be used year-round. Even with minimal skills and hand tools, you can build this yourself.
This can be a stand-alone system or incorporated into your normal hot-water home-plumbing system, allowing you to take advantage when the sun is shining, then by closing two valves, you easily fall back on your propane/electric water heater on cloudy days. In a separate SB article, I’ll show how to connect alternative water heaters to the main plumbing lines so your regular water heater can be a quick backup.
This is one more solar project that pays for itself in energy savings today and will provide an easier transition to a post-TEOTWAWKI world tomorrow.
WHY A SOLAR WATER HEATER?
Due to the high density of water, it takes much more propane to heat water than it does to fry bacon and eggs. The last thing I want to do when the SHTF is waste propane heating water if the propane man is going to be just a distant memory I’ll tell my great-grandkids about. With nothing more than the sun, a 25-watt solar panel (or a battery from your post-SHTF vehicle and a $15 solar trickle charger), you can run this solar water heater for years. There’s very little work involved in heating water: open two valves, flip a switch, and ignore it until a few hours later when it’s time to turn it off. How long would it to take to heat 30 gallons on your woodstove or campfire in the backyard? How dangerous is it walking around with pots of hot water on your way to the bathroom or kitchen? How nice are hot showers compared to a sponge bath?Continue reading“A DIY Solar Water Heater – Part 1, by St. Funogas”


