Upon arrival, I found the system functioning by design. However, it is blowing warm air into the office. I proceeded onto the roof and found that the system is low on R410a. We could fill the system up, but the amount of refrigerant needed would be determined when putting it into the system. I estimate 5 pounds. With the age of the unit, we are no longer able to swap out the parts that are leaking. I suggest system replacement due to the age and the unknown severity of the leak. I provided options for adding refrigerant and for our comfort consultant to build a price for a replacement. I added pictures of the location as well measurements from going from the front of the building and going from the side of the building. I could not get in contact with manny to get approval for any work. I will email our invoice for the service fee and they will reach back out with the route they would like to take.