Excellent service from Charles from Rudy Cools. My heater wasn't working on my Rheem gas pack unit and the burner was not burning properly. Charles diagnosed then disassembled the unit and cleaned the heat exchanger. Heat is working well now. I was charged a very reasonable price, and most importantly, wasn't told I would need costly repairs. I used this company because several people on the neighborhood website recommended them as honest, reasonably priced, and professional. My experience with them indicates that Rudy Cools were all of these things.