One year now, I am happy with the stove. Recently one of the wires in the four wire connection was visibly broken, this was on the top monitor, where it plugs into the back. When I put the wire back in the slot it broke off from, the stove would work, but every time I opened the hopper I had to do this. Pretty obivious this was the problem. Last year when I put on the optional hoppper, I didn't replace the four pronged wire with the longer cord. I called Comfortbuilt tech help, he immediately read off a list of parts I need, including a new mother board. He said he could give me a 75% discount, but didn't give me a price. So, I asked him what the price would be, I think he said around $250. He was clearly trying to sell me something I didn't need, not what I would expect from a technician who I called for advice. He said, rather nastly I thought, "well, I'm just tryng to be helpful, I can't gaurantee the broken cord is your problem". Well, the wire was visibly broken, and when I put the wire in the slot on the connector, the stove worked, but every time I opened the hopper the wire came loose., and the stove would shut down. I would guess that is the problem, don't you think? As the saying goes, I wasn't born yesterday. I ordered the longer four wire cord, on my own, and replaced it, and have had no problem since. That cord was $30, with shipping, too expensive for what it is, but a lot cheaper than $250, for parts I didn't need. So, really, really poor service from Comfortbuil, a total rip-off if I had believed the technician, I found this experience to be an insult to my intelligence.