One system tune up in Roswell. Arrived on site checked filter and cleared barometric port. Checked ignition systems, electrical connections, amp draw and capacitance. Found system with overflow water safty switch, but no primary wet switch, no aux drain pan and a dirty blower assembly, should be pulled and cleaned. Recommended installing surge protector to each piece of equipment, a compressor assist kit to outdoor unit to prolong the life of the compressor, and a uv purifier to improve indoor air quality. System is operating normally at this time.