Cheap and Easy Solar Heater

[velacreations]

Here's a cheap Solar Heater we made that works really well, and you can put together in a weekend. It runs a small fan for circulation, not totally necessary, but greatly improves performance:
Cheap and Easy Solar Heater

And here's the Spanish version, if you need it:
Calenton Solar

[HuntingRoss]

It's a good system. Kingspan have commercialised it in the UK.

[velacreations]

This is an easy one to put together, maybe a day or a weekend, and it really pays off. Winter is over for most folks, but good to get this built before next winter.