Quote Originally Posted by North View Post
These are great for folks in the warmer climates - you need a large open space with warm ambient air to realize the savings. I didn't know about these hybrid heaters until Jax's posts, and I told an Alabama relative about them...it should work out very well for them.

The pros and cons:

http://www.atozstatewideplumbing.com...ers-pros-cons/
Yes, I looked at how they work. They pull heat from the ambient air, and heat the water. This works if you aren't heating that area, because otherwise you would ultimately be paying for the energy to heat the water if you were heating the living space. But it's a cool idea for people in the south.