I was working as a home service technician when I received a request to provide an estimate for a furnace repair. I arrived at the customer's home and inspected the furnace. I found that the furnace was not working properly and needed to be replaced. I provided the customer with an estimate for the repair and explained the process of replacing the furnace. The customer agreed to the estimate and I scheduled the repair for the next day. I arrived at the customer's home the next day and replaced the furnace. The customer was happy with the repair and I left the customer with a warranty for the repair.