Don’t worry if the cold comes. You won’t need electricity to heat the water when you build your own portable solar water heater.
Making a solar water heater is a project that you can easily do on your own. This homemade solar water heater using copper coils can reach temperatures over 65 ° C. As for the materials, you need a 15 meter roll of copper tubing (which is much cheaper than the small rollers connected to each other.), standard glass and matte black paint.
It is a heater that you can even put away in the closet when not in use, as its design allows it easily. Just watch the whole video to learn how to make your own solar water heater: