We were sold a Ramsond generator when it came the battery was dead. We were told it would run well in the bay of our bus by the customer service at Ramsomd as long as it was vented. It was vented but it burnt up after only 4hrs of running. We called and ask for a part and they told us it would cost us. If you are thinking of buying this product burn your money instead at least you will get heat out of it.