WaterFurnace ND-049 Envision Dual-Capacity Heat Pump

My home is comfortable and my utility bills are low.  I have a 2000 sq ft house on a 4 acre lot in northeastern Wisconsin. I replaced my high efficiency propane furnace and air conditioner about 5 months ago with the WaterFurnace and and I have not regretted it once. The heat pump has a horizontal closed loop as the heat sink.  There is a 40 gallon water tank to which the desuper heater is attached so I get a lot of free hot water.  The unit also has an electric resistance backup in case something goes wrong with the geothermal pump, it also will add extra heat if the geothermal cannot keep up.   My old AC unit used to run pretty much constantly on hot days but the ground source heat pump kept the house cool on a hot August day with about 25 people over for my sons birthday.  And while it was cooling the house it was transferring that heat into a water tank so my water heater would not need to run.  Now it is November and the temp is 13 degrees Fahrenheit as I am typing this.  The heat pump is only operating on the low setting and just part of the time so I am sure it will have no problem keeping up in January.  I have not had it long enough to get an accurate cost savings but I am guessing it will be saving me close to 2000 dollars per year.