It is very inferior compared to other heaters in the market. Bought four units of the 1800 model less than two years back and ALL of them are not running. Worst, nobody would fix it; can't send it back to the company since one year warranty has expired though I told the Lily Distributor in Morristown and Knoxville Tennessee that I am more than willing to foot the bill incurred. Now, I have 4 space occupying literally trash space heaters in my garage...short of that they look like brand new but worthless!!! Take note I have 4 of them breaking down after over a year!! What a n expensive joke!!!