Completed STU x3 systems First system was for master bed and bath, system was operating efficiently but I found that the insulation levels on this portion of the house was low. R value of r26 explained to cust that we should upgrade to r49 so that home will hold temp better, cust agrees wants me to follow up in two weeks about doing r29 insulation upgrade to master bedroom side of the house . Second system was for the main living area down stairs, I found a little rust on the evaporator coil but nothing extensive. No refrigerant leaks in coil. System is clean and Amp draws are acceptable Third system was for upstairs, this system was very clean and operating efficiently Refrigerant levels on all three systems was acceptable Deltas acceptable No hard starts No surge protectors Need to schedule follow up phone call for Ian on April 3rd.