Customer relations is one of the most important parts of the job.
Fixing a unit without satisfying the customer is a job only half done. That is, until he notices that the condenser motor was defective. He now feels that he should not have to pay for a defective part. It is, however, in your best interest to protect the customer from equipment that prematurely breaks down. If the parts are truly defective, this should be brought to the attention of the manufacturer with a request for compensation for the customer.