For the gas package carrier 4 ton system. I found low voltage electrical wiring needing to be replaced. A few feet of wire needs to be re ran to prevent low voltage short in future. Heat exchanger looks good on gas package system, gas pressure and inducer motor both where in specs also. Gas package system could use an indoor coil cleaning likely due to long filter change rates. Will discuss with cst about changing more often to prevent dirty indoor coil. Blower wheel is fair, bearings felt good. Upstairs air handler in good shape, says he has put Freon in it before, didn’t see any serious signs leading me to believe it would leak at indoor coil but still likely where that would be. Looked over all motor amperage and compressor amperage, checked temperature of line sets and found system heating effectively. Checked defrost and heat strip operation, both good. Pan in attic has secondary drain going into it but it does have a working safety switch in pan in attic. Could add secondary floa