Performed free promotional electronically search on two systems. No leaks were present at this time. The outdoor temperature is 56° which is too cool to accurately check the refrigerant levels. However, within a margin of error I believe the upstairs system refrigerant levels to be good but the downstairs levels appear to be significantly lower than I would expect to see in these conditions. Home Owner has a home warranty and declined adding any refrigerant at this time. Thank you for choosing comfort zone for your heating and cooling needs. Michael Ressa