I would like to see how much cost I’m saving by usage of a ventilation system.
Cost savings by reducing heating on winter cooling on summer by normal window ventilation. It could be calculated how often the windows needs to be open compared to the air quality delivred by the air ventilation. And the open window time could be used to calculate the energy cost for heating or cooling.
Even if we use demand based usage of the system what I save with this.
This is what I do for years now. My latest and best analysis can be found in the attachment. Now we have to upscale this to more units at once.