Performed Precision Air Conditioning Tune Up on system. Replaced 16x25x1 Air Filter. Cleaned Condensation Drain Pipe. Inspected Electrical Components on Indoor and Outdoor Units. Measured Refrigerant Charge and Supply/Return Air Temperatures. System is running to standards. Please note Hot Water Heater is from 3/2008. Average life of Residential Water Heaters is 10-12 Years. Recommend replacement of 40 Gallon Natural Gas Atmospheric Water Heater before any issues occur.