Patterson did a great job fixing my AC and heater. Good and friendly service, good and accurate cost estimate, and they were able to do the work a few days after estimate. The only con was that they said it would be done in 4 – 6 hrs, and instead it was more like 11 hrs. The tech stayed until everything was done, which was great, but better timeliness would have made it 5 stars. But overall, great service and very professional.