Solar Heat
It used to be that solar heat wasn’t all that cost effective, but that’s no longer the case. Nowadays, the cost of solar panels have gone down to the point that solar heat can be a great investment,
Solar Water Heating Systems can be a great benefit to your wallet and the planet as well, especially if you have clear sun exposure.
Do your homework, though, and be sure you intend to stay in your home long enough to recoup your investment.