We were going to install a mini split system with 6 heads and two outdoor condensers just because we didn't want to replace the old ductwork. After considering running refrigerant and drain lines with all the holes needed in the house walls not mention all the maintenance replacing the ductwork became simpler. Besides in 20 years all those mini splits would end up in a landfill. So instead of sending garbage into the future we decided to go with Geothermal and have nothing outside or on the walls of the house. Yes it is a lot of work to redesign and replace the ductwork which will involve taking out a sheetrock ceiling in a finished basement. There is also going to be drilling for the vertical loops and trenching but a month's worth of discomfort is bearable and yes the geothermal is more expensive but only because the ductwork is being replaced. In the end we have one geothermal heat pump in the basement and a brand new 3 zone ductwork system. A lot of people don't realize the amount of maintenance a mini split system requires! For reference the Minisplit system is quoted at $17,555.00 and the Geothermal is $21,315 both are after all rebates and tax credits have been deducted. Other costs common to both systems will be upgrading the main electrical panel from 150 to 200 amp service, removal of 275 gallons of heating oil and a 35 year old oil tank, removal of an existing air source heat pump and indoor coil (which by the way is an Amana ASZC18 installed in 2016 free to anyone wanting it), and removal of a OH6 ThermoPride oil furnace installed in 2009 (also free to anyone but it needs a new burner). We have to replace the 35 year old ductboard system primarily because we are concerned about it's condition and prefer metal ducts. The expense of the ductwork has been quoted in the $7000 to $12000 range. Is this a reasonable range for ductwork in a 1900 sq ft house in the Hudson Valley NY?