Easy instructions, everything came together perfectly no complications, no defects in the manufacturing, good price,  delivered on time. The size of TV I am using is a 50 I will not be able to comment on heat functionality because I bought it in September and it is still to hot in Coastal Georgia to use the heater . But when the unit is first turned on at night the heater comes on automatically and it does heat up quickly . In September and October I will turn off the heater and just enjoy the ambience of the flames. I AM A HAPPY CUSTOMER .