Success Story-- READ if your Considering a GSHP Hello- Here in vermont i have a 2004's finished ICF home about 4500sqft. Self builder at the time didnt have anough for a gshp install so went with town water and a 100k utica 87% boiler. So me the self builder struggled to get to this time now that i have the equity to take out and install it now. I had run through the vt. effiency folks at the time of building and the house was passed as a 5star"plus" home and i proudly have my plaque on the top of the fridge awaiting front entrance dislplay (6years and counting) ... anyway the paper work that i dug out of the envelope that was up on the fridge says that we were suppose to have 128mmbtu heat load with approx cost of 4500 bucks for heating... also has elec load and cooling but i am interested in heating only. so if i were to use this load calc that was done in mid '06 i think that is about 10fat tons= well i dont have that much equity i had called a local gshp well driller and had him figure on a 5 ton before i even knew what my load was just so i could figure out what kind of money i was thinking of borrowing. His est. was 10k for well/wiring/pump and controls (not including into the home) so i figured i would have a 25k project based upon using my radiant and hopefully the in place baseboard (installed more footage at time of install expecting low temp water at some point) for about $13k for a 5 ton or so high eff. pump (open loop water back into well) ok.. so no after seeing the paperwork and what the cost of fuel was in 2006 about $1gal cheaper than now i am wondering if the loads are wrong... ie- paperwork said 4500 heat not including hot water.. well our actual is about 4500 including water at the higher prices of 2010-11 so that means hopefull that the 128mmbtu is not correct? also i am confused because i see heat pumps at go from about 30-70kbtu and wonder would if need 2? definitly out of my budget... I had called VT to see if we had any tax credits localy and they said no and they were on the fence with geoheat and i should look at solar hot water which has both fed and local incentives? anyhow this site has been a huge help for me and my wife and now that i have her conviniced to refi i am wondering if i spoke to soon. I have blower door numbers and such and wonder if i should just have someone do a new manual j on the place or such? thanks all and i hope you can help me make sense of this stuff!