Flame works well. Heater worked for one hour and I got an E-3 message. Did everything the manual said and still didn’t work. Phone customer service and they are sending new fireplace insert. It took 4 hours to put stand and fireplace together and now I have o disconnect all devices to replace insert. One day later ( after service call ) the heater started to work. When replacement come I will keep it for a couple of weeks to insure old one works. Other than that problem we have had many complements on the unit. It is very wel made.