I purchased this stove 11/04/2010. I was attracted to the stove by its looks, styling, 48,000 btu rating, 120 lb. hopper capacity and price. When I started the stove after the "dry run" to season and burn it in, the stove performed very well. Everything worked flawlessly and it heated very well. I am using this stove as a supplemental source of heating. The next day, my wife and I noticed the room blower fan was getting noisy. It got progressively louder until the fan motor seized and blew the fuse. I replaced the fuse and removed the blower assembly. I got the fan freed up, reinstalled it, and started the stove. The blower was even louder than before and failed again. I have requested another blower assembly from US Stove Company. They were courteous and are sending me a new blower assembly at no cost, including shipping.
Ash accumulation is contained in the combustion/firebox, did not leak out of the door seals, and had the consistency of flour. The stove burns the pellets completely. There is no smoke emission from the chimney. My wife enjoys the stove's warmth and I enjoy the stove's 120 lb wood pellet hopper capacity. 1 bag of pellets will last approximately 18-20 hours with the stove's heating range set to 1. The stove has 5 heat range settings, 1 being lowest and 5 being highest. I fully expect this stove to significantly reduce my heating bills this coming winter. The basement was very cozy with the stove on. I hope the stove keeps functioning well long-term.
The new room fan is installed. I received the new room fan 4 days after contacting the company. It appears the new room fan blower assembly has been re-engineered. The new blower works very good, but running noise is still noticeable. The stove is now fully functional and heats well. We have been running the stove on heat range setting 1 and our basement temperature has been staying in the range of 69-70.5 degrees F. On heat range setting 2 the basement temperature is between 71-73 degrees F. Average outside temperatures have been about 28-34 degrees F at night. The stove has been trouble free since I installed the new room fan. The feature I like the most is the large 120 lb hopper capacity. The stove will operate nearly 60 hours before requiring pellet refill. The glass window interior in the door quickly covers with fine ash when the stove is operating but is easily vacuumed & wiped off when cleaning the stove.
After 3 winters of running the stove, I've been experiencing an unceasing cascade of stove failures. First, the burn pot began overfilling during operation. I've been using the same pellet brand since 2011. Found the draft fan electric motor was wearing out, not moving the air volume through the stove, slowing down pellet burn rate & heat output, due to reduced draft fan motor rpm/blower speed. I replaced the draft fan & gasket at $290.00 including shipping. Started the stove and the air pressure switch soon failed. I replaced the pressure switch at $110.00 plus shipping. Then the exhaust temperature thermister failed. I replaced the thermister at $46.00 plus shipping. Restarted the stove and soon experienced error code 6: shorted igniter. I replaced the igniter for $56.00 plus shipping. Restarted the stove and still got error code 6. The 5A fuse was still good but was replaced with a new one, indicating a problem with the PCB igniter board. There probably wasn't anything wrong with the ignitor in the first place.
I've already invested over $461.00 into a still non-functional stove. The cost for a new PCB ignitor board is over $415.00 with shipping, according to customer service at US Stove Company. I'd have over $900.00 in parts, including shipping costs, invested into this stove. That's the cost of the original purchase price of the stove, negates all of the fuel savings accrued over the past 3 winters, and works out to an average cost of over $300.00 a year solely for parts! I can't return the new parts I've installed, to recover some of my out of pocket costs, because they've been used. This stove is now destined for the scrap yard.
The King 5500M pellet stove was a good performer but the crippling and unceasing cascade of failures and high cost of frequent part replacements make this stove uneconomical and cost prohibitive to own in the long run. This is disappointing and unacceptable.
I've gotten exactly what I payed for. I find this stove, overall, an egregious product and very poor long-term investment. Armed with the knowledge I now have, I would have never purchased this stove. This stove will be replaced next season with a higher quality, better engineered wood pellet/multi-fuel stove. If this review accomplishes anything for new pellet stove shoppers, I highly urge you to avoid purchasing ANY products from US Stove Company. US Stove Company and their products, in my opinion, are the automotive equivalent of YUGO.
Take heed readers; you've been duly forewarned!