And

https://h.api.crmls.org/RESO/OData/Property?$filter=(Appliances%20has%20OData.Models.Appliances_Flags'FZ,GD')%20and%20(PropertyUnits/any(d:d/UnitTypeActualRent%20le%201400))&$count=true

https://h.api.crmls.org/RESO/OData/Property?$filter=(PropertyGreen/any())+and+(PropertyUnits/any())&$count=true

Or

https://h.api.crmls.org/RESO/OData/Property?$filter=PropertyGreen/any()+or+PropertyUnits/any()&$count=true&$expand=PropertyGreen,PropertyUnits

https://h.api.crmls.org/RESO/OData/Property?$filter=PropertyGreen/any()+or+PropertyUnits/any()&$count=true

Not

https://h.api.crmls.org/RESO/OData/Property/$count?$filter=not+PropertyUnits/any()