This was my first time using AirNow Services. My heater went out during the freezing cold weather and I needed someone to come out right away. They arrived fairly quickly but it took them a while to get the unit fixed. The technician did say that the part that needed to be replaced was really hard to get to and I assume that is what took the greatest amount of time. The plus side is that they had the part with them and a return visit was not necessary and with the temperatures at freezing this was a big plus! The service technician was polite and professional and the unit is now working. The cost of the repair was a little more than I had expected but I am not going to quibble about the price because I did hire them to do the job. I would consider using them again but would want to get a price quote upfront before committing. All in all, they did a great job of getting the furnace working at a time when the temperature was freezing!