Costumer requested to add R410a refrigerant to the system. System indicated low charge and costumer approved adding 4lbs of R410a refrigerant to the system. Refrigerant level differences are on file. Supply temperature of 47 degrees after charging the system. An estimate for AC leak freeze was provided but costumer declined at this time. Tech educated the homeowner about our maintenance plans and decided to invest into a monthly Premium agreement. Costumer is interested on system replacement but would like to speak with her son prior to schedule a visit from our field supervisor. Costumer will call in when they are ready for the quote.