My system is made by Hydron of Millbrook Industries. Built like a rock, all stainless steel construction with acoustic internal dampening and standard compressor parts with over size condensor coil for high effiency. Water furnace effeciency is a bit higher than mine because they use 2-stage compressors. Great effeciency, but very expensive to replace. When you search for a system, make sure you check the decibels of noise when in operation. A good geo unit shouldn't be any louder than a refrigerator when running. The noisiest part of the machine should be the air circulation fan feeding your ductwork. Some systems have good specs but are noisy as hell when they operate, so beware. sorry for the mispelling.
