I want to create an air to air loop using HVAC such that the air that is entering the house will be warmed up by the air going out of the house. This would then work instead of ventilation. I have created an empty air loop and added the thermal zones in which I want the HVAC system to work, but then I am not sure what else to add so that it will work.. What more and where do I need to add things to create such a loop?
