SOLAR WATER HEATER

Materials:

• electric hot water heater
• black paint 

Instructions: 

In just three simple steps, you can have a new water heater on your terrace or garden to cool off on very warm days. Just:

1. Uninstall your old electric water heater.
2. Paint the surface in black.
3. Place it outside, where it gets maximum sun throughout the day. 

You can even become more circular by making an opening at the top of the heater to collect rainwater and thus save water!