Complete cooling tune up inspection special. Did not change filter, check safety and operations. Find Trane system operating with low charge and missing hard start kit for Trane system. Find system have no drain pan and no water protection for system in basement. Find flue pipe not up to code due to single wall flue pipe. Customer only want to recharge system for today visit. Add 2 lbs of R410A. Find ac liquid line oversized for equipment and should be 3/8†and not 1/2â€.