Hi all, Last year around this time we had our oil boiler removed, radiators removed, duct work installed, and Geothermal put in. Without going into too many details about the install quality -lack thereof- I've had questions from the start as to the power consumption, airflow, water intake temperatures and size of my system. It may be all a/ok but my gut is telling me something isn't quite right. Per the tagged thread here is some of the info I do have to start. Apologies for the long read, any help or opinions would be appreciated. 1) Where you live : Allentown, PA 2) Heat loss/gain calculations for your home: No idea, installer may have those? I believe they were based off the BTU# on my oil boiler (50,000BTU). 3) Brand, size (model) and type of heat pump: Climate Master Tranquility 27. Two 2 Ton units one combined air handler & pump for first floor and one compressor with lines leading to air handler for second floor. 4) Type of loop field (open/closed/vertical/horizontal) size and design parameters: Closed loop, Vertical, 4 holes appx 280 feet deep each. 5) Average cost/Kwh of electricity and consumption: Impossible to calculate as a 15.86kW solar array was installed a few months later and two electric vehicles were purchased. (I did not have a comparison year-year vs the oil boiler) 6) Entering and leaving air temperatures (EAT, LAT) measured immediately upstream and downstream of the heat pump: Varies but I am seeing a 20 degree rise when heating intake vs output. 7) Entering and leaving water temperatures (EWT, LWT) measured at the heat pump(s): Also varies but usually a 5 degree difference between EWT and LWT. Lowest temperature measured 30 EWT, highest LWT in the summer was 80. 8) Percent of load to be covered by geo and balance point: Expected 100% by Geo, occasional but rare instances when AUX needed due to old construction, wind. 9) Installers assessment of your systems operation.: Claims everything is A-ok 10) Projected operating costs, actual operating cost and previous heating and cooling costs: Unknown My main gripe is with the water temperatures mainly the way the loops were done. Obviously the lower the EWT when heating the less efficient the system is and inversely when cooling. In my area the water table is at 110 feet down (verified by my well head which is only 50 feet away). This should mean that the system is in contact with at least 170 feet of liquid saturated earth. My concern is that due to the design of the manifold the vertical loops are not being used equally causing one to be utilized more than the others. Also the entry location is only about 2 feet or less below ground level. I've attached a pic showing the field entry point. Note the basement window in the upper left corner (it is in a window well appx 1 feet deep). To the right is a self purging flow center with separate pumps for each heat pump. I do not know the flow rates and they are not listed on the side of the pumps only the Hp and wattage draw. Despite repeated attempts to get the HVAC company that installed the system to come back and install a new manifold with flow meters and temperature gauges (at my cost) they have yet to even provide me with an estimate. My feeling is they have no interest in installing any new equipment that would provide proof that something is wrong with how the field was done. I'm hesitant to call in another company as the first company would just claim whoever came after them must have screwed it up. Obviously as I cannot get them to install gauges all my temperature readings have been done with a thermal gun into the flow center.