I have a house that I am getting ready to install a 038 ttv climatemaster at, the house has a 2.4 ton cooling load and I was planning on using two 300ft vertical wells with one inch pipe. The water well driller on this job drilled a 650 ft water well that only produced one gallon a minute so the owner is asking me if we can use that well and just do a single 1300ft closed loop. Have any of you guys installed a loop this long? bigger pumps? efficiency issues? Thanks,

BTW drilling and grouting are very high in my area 18-ft.