Hope you are doing fine.
I would kindly ask for an information please.
What would be maintenance cost (in $) on the following systems (project is located in Canada but I guess same applies in USA) or any reference (web based literature ) where I could start looking for :
1) 4 water source heat pumps (160kW)with vertical closed loop geo exchange (96 boreholes, 105 m deep) and natural gas fired heating boiler (for covering heating peak loads)
3) 2 water cooled chillers and natural gas fired boiler (for heating purposes)
4) Air cooled chiller and open loop geothermal energy source linked to building's HVAC equipment (AHU and Fan Coils)