The only negative we have found with the product is the heat source. As many buyers have said, it does not provide the heat that it should. Part of the problem is the heat output is at the top of the unit and in most real fireplaces the firebox is preventing what heat there is from blowing into the room. not a great design. other units we shopped had the heat source on the bottom. other than that we like the unit alot and would recommend to friends