Dear all,

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)

Thanks muchly