Main level system - Not cooling 9 year old builder grade Lennox gas furnace and AC. System not cooling due to low refrigerant levels. Homeowner had a different company out last week that put 5lbs of R410a refrigerant in the system. Observed that the evaporator coil is a Lennox C-33 model coil, these coils are know for rusting out and leaking. I performed a refrigerant leak search and observed multiple places on the coil leaking, 3 around the capillary tube connections. I brought the homeowner to the attic to witness the rusted coil and where it was leaking. I inspected the furnace and outdoor unit as well. The compressor failed the mega ohms test, compressor is weak. The dual capacitor is weak and the electromagnetic contactor is burnt and pitted. This is typical on a 9 year old builder grade system with a life expectancy of 8-12 years. The furnace blower wheel is collecting dust/dirt from minimal filtration and poor design on filter door. The blower motor is seeping oil at the main