There are a lot of DIY solar water heater designs out there, but you'd be hard-pressed to find one simpler, cheaper, and easier than YouTuber @sergiyyurko2110's aluminum foil water heater.
The Family Handyman on MSN3 个月
How Does a DIY Solar Water Heater Work?
And that begs a caution for anyone considering a DIY solar water heater: Don't forget to include hoisting it onto the roof, ...