The outfit i dealt with when i had my harman insert put in is family owned and has be around since the late 1970s.When i went to see them they gave me a complete computer print out of what would be done and how much.A few weeks later i had the stove installed with no problems They do everything! sell,install and yearly maintain.They have a service contract that you can get!They will service the stove and clean out the liner once a year for around $160.A friend of my just had his done a few days ago.He was amazed at what they did! Cleaned the liner,took out the door glass!cleaned it and replaced the gaskets (no extra charge).removed the fan and cleaned that,spray painted some areas.I have chatted with them a few times since with some questions and they where very friendly and helpful.I would give them a B+.