Arrived at customers house for system not working. On arrival. Customer showed me to air handler unit. Fan was running. Went outside to condenser. Fan was running But compressor was not. Tested capacitor and capacitor was bad. Suggested customer change and customer agreed. Change capacitor in unit started up fine. Noticed customer did not have a surge protector. Explain to customer why surge protectors are important for a unit to live its full life expectancy. Checked over unit and unit is producing proper delta. T. Showed work to customer and customer is very happy. Suggested customer sign up with service plan and customer agreed. Collected payment and signature and left. Thank you for choosing total air!