That's what a solar ... a DIY solar water heater: Don't forget to include hoisting it onto the roof, securing it against high ...

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.

Essentially, it allows the water heater to get much hotter during times when solar energy is available, and lets it drop to lower values before running the heater on utility electricity during ...