Hi! Been trolling this forum the last few day and have found some very helpful information - decided to give it a go. A little background. We purchased a home just west of Cleveland, OH in Summer of 2014. It had a geothermal unit (5 ton WaterFurnace) already installed (great selling point) in 1998. Winter of 2014/5 - our blower motor breaks - but seems to work ok to get us through a pretty cold winter. Fall of 2015 - Low Pressure Fault comes on - repairman (initial installer) says system is old - there is a leak, it's only a matter of time until system dies. Panicked with holidays and house guests approaching - we get 6 quotes and ended up replacing all of our interior components with a 5 ton Climatemaster T30 with a different installer - not the same one who did the first. Here we are about 6 weeks in and we keep getting locked out of the system (low water temp) and are pretty much running on aux heat (which is not big enough for our house - averaging 62 when we keep it set at 68) when the temperatures are less than freezing. The days it gets above 30F - we seem ok - guessing that it's because the system has some "downtime." I find myself putting it in emergency heat setting for a few hours to try and give it that rest and then that will buy us a little more time with the compressor - but then the cycle keeps repeating. The installers are standing by that the unit is doing exactly what is it supposed to and that it is an issue with our loop field. I have to note here that they never once asked anything about the loop field prior to install or even prior to this week(the previous owners did leave us with paperwork that shows what we have - 750', 5 loops @ 150' ft, vertical system.) Their solution is to drill more loops and charge us an arm and a leg. From research I do see that if it were a new system we'd probably have closer to 1000' and maybe a little deeper - but we're not grossly far off - are we? Am I missing anything? Other than being extremely frustrated that they never thought to review this information (and I guess I never forced it.) What else could be happening? The installer keeps saying our loop is terrible - but no specifics. Please help!! Thanks in Advance!!