It’s a tough choice: a tankless (demand) water heater or a solar water heater—which should you get?
Since solar water heaters require the sun, you may be wondering if they can provide you hot water at night.
Do you have a water heater that's 8-10+ years old?
In short: no. There’s no conclusive evidence that hard water has any ill effects on your skin.
We’ve already showed you how to prevent common clogs and even how to unclog your toilet.