Complete 1 system a/c repair and preventative maintenance check. The customer is interested in air purification. Left pamphlet for pure airX products. The furnace is good with clean blower and working electrical components. The filter is good. Could is clean with 2 forms of water safety that both work. Cleared drain line. The outdoor unit is clean. Has great pressures and working electrical components. The system has no compressor saver or surge protection