Had no hot water last night. Called at approx. 6 am in the morning. Arranged a service call for that night (6 - 10pm). Tech called around 7:30 pm said that he would be there in about 10 min. Arrived in 10 min. Put on his boot covers. On the way to the water heater, checked to see if he knew what the reason I call was. He did but filled him in anyway (generic no hot water vs. the history of what I tried before calling). Took a look, replaced part and tested for leaks. Explained what was wrong, what he was doing and what to expect. Asked him questions regarding replacing the unit, he answered them and explained current things happening with regards to replacing water heater. With service call done, he cleaned up the work area, threw out the old part. Cheery fellow, signed off on paperwork and left.