2005 water furnace 5 series split system geothermal located in basement matched with tempstar upflow gas furnace located in the Attic servicing the second floor Equipment r410a refrigerant charge is very low but not cycling on low pressure safety switches. Equipment is running stable at 48 PSI suction and 175 with expected pressures to be at 125 and 300. Full system charge is approximately 7-8 pounds. Isis forming on the bottom 25% of the attic system horizontal a coil. Homeowners have chosen not to recharge the r410a refrigerant until the leak has been identified with electronic and/or nitrogen pressure testing at a later date scheduled by the office staff Recommend 2-3 hours for refrigerant recovery and nitrogen pressure testing if electronic testing is not successful Today's diagnostics trip charge has been rolled over into the leak search estimate