Water furnace 3 series cooling system maintenance, tune-up, cleaning, seasonal cooling inspection. Shut down humidifier for summer, install replacement 24x24x1 pleated air filter homeowners already had on site. Scrub and flush air coil drain pan and condensate trap, run test ground loop pressure at 35 PSI, Five E3 low refrigerant pressure service codes logged since last heating inspection, system is running within specs no actions taken at this time. Cleared all service code counters Homeowner states no issues with the thermostat. No adjustments to thermostat at this visit, all testing procedures performed through AID computer Geo package equipment is clean safe and ready for cooling season *The air filters used by the homeowners are slightly undersized allowing dirt buildup on the air coil. Coil is not affected at this time but different filters with true to size measurements would reduce future maintenance requirements