How to Make a Simple Solar Spa Heater on Your Roof

Heating Things Up

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solar spa heater diy roof

credit: Gregory Horejsi

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Even in the summer months, it's nice to have hot water for the shower, doubly so if you have a spa or hot tub. To help you keep things steamy while keeping your electricity bills down, here's a surprisingly simple DIY project. For about $60 worth of materials, you can make your own water heater, installed on your roof. Here's how.

This project deals with heating a spa, but with some tweaks near the end of the process, you could use it to heat a pool, sink or bathtub.

This project is the work of Instructables user Greg Horejsi, aka petastream. Special thanks to him for his permission to post it here.