AC MAINT. Found system operational upon arrival. Changed 14251 filter. Blower is dirty. Coil is dirty. Exposed duct has no insulation which lowers efficiency. Washed condenser coil. Compressor amperage is high. Motor control is still in range but connections are weak and starting to rust. Base of condenser coil is also very rusted and can give out. Coil may develop leaks with rusting. High voltage line relay has some burning and pitting. Freon the unit uses is discontinued r22. Condenser motor is also leaking oil and rusting. Motor may seize from oil leak. Overall recommend options on new equipment. Customer is interested but his credit isn’t good right now. Discussed other options but he hasn’t accumulated 12 months of payments on time to his mortgage company. Customer did sign up for ESA month to month until that time comes. Unit operational upon departure.