Performed Ac maintenance on (2) 1 year old Lennox systems. Replaced Merv 11 filters provided by homeowner. Temperature splits are in range for both systems, refrigerant pressures are good. Checked outdoor unit electrical and system components. Primary motor controls are in good condition. Secondary motor control for right side unit had a bad fan reading, replaced under warranty. Pulled condenser fan motors off and thoroughly washed out condenser coils inside and out. Went over findings and recommendations. Homeowner liked the idea of adding whole home air purification to systems. Needs to talk it over before making a decision. Cycled systems, systems are operational upon departure.