Upon arrival homeowner met me in driveway. Explained to me that his thermostat was intermittently powering off. Thermostat was powered on when I walked up to it. Ran a call for cooling from thermostat. At arrival primary drain line & auxiliary/emergency drain pan had no retained water. After a few minutes of operating in cooling mode, primary began to back up due to restriction between hvac and bathroom sink. Indoor blower motor has significant buildup on the blower wheel which negatively affects blower motor and will lead to premature failure….also causes the equipment to perform inadequately with low efficiency. Suction line Armaflex insulation is damaged at indoor air handler and completely missing at the outdoor equipment. Homeowner declined all recommendations for repairs and said he was going to have his friend come perform service. Emailed estimates.