Sachin Enterprises was selling and installing A/C for John. As per the terms of the contract, John had to pay for A/C in advance. The terms of the contract further stated that property in the product pass when it would successfully install to the satisfaction of the customer. During the course of installation, the A/C got damaged and was dysfunctional. Is the sale complete? Who is to bear the loss of the product? What remedies are available to John?