We are in the midst of getting bids for a geo system. We currently have 14 tons in 4 different units. We will be adding about 2 more to heat a new addition. Currently heating with propane and cannot wait to get rid of it (I don't know why font changed!). Anyway, trying to decide between vertical and horizontal. Vertical is perferred because of "less mess" in the yard. I have spoken with someone who used to be in the biz and was a geo trainer. He told me to have one person drill the wells and find a reputable company (he recommended one) just tie into the wells. He said this was more cost effective. One company I've had out here had said they won't do that because the cannot guarantee their system if someone else does the wells. What are your thoughts on this? This will be in the $100,000 range so it would be nice to save a few $$ if possible. Not wanting the cheapest install but the best for the best price. Also, how much more does it cost to add the desuperheater? And he mentioned using the geo to heat the pool. Is this a separate heater or would it use water from the desuperheater? Not sure how that works. And, can units go in the attic? First guy said all of them could go under the house (two story, no basement). It would be nice to have the totally out of sight! I don't even know how they get them under the house - it's not that tall under there! I started exploring geo 5 yrs. ago but cost kept us away. Now we're looking at replacing units as they age and I've had people suggest we just go with geo so we're looking at it again. Would also like to know what units have the best repair and longevity record. Thanks to anyone that can offer up some sage advice!