Geothermal heating

[El Blanco]

My sister's boyfriend is going to some seminar in Michigan about geothermal heating and invited me to go along. Talking about installing and selling. Supposedly, it is less expensive than fossil fuels over the long term and that there is a lot of housing development in upstate NY that may install it.

I've also heard that Europe uses it and that it is very efficient.

With gas prices going up (I honestly think I'll be paying $3 a gallon by Sept) , this looks like a great thing to get in on the ground floor of.

So, what are the drawbacks? I want to know what I'm gett ing into. I know the instillation is expensive, but that is supposedly being taken care of by new technology.

What else should I be aware of if I decide to go with him?