Residential preventative maintenance tune up Lennox gas split AC, air handler and evaporator coil. Install surge protector. Clean condenser coil and condensate drain line, check duct static pressure, airflow, refrigerant pressures, temperature split, air filter, compressor, motors and fans for best efficiency. Inspect air conditioner, capacitor, contactor, safeties, electrical, thank you for your continued confidence in our HVAC, wine cellar, and home performance energy audit services.