Though they do say things about flame shielding.The picture gets even murkier when one considers the number of hybrids now on the market and the variations of design and catalyst protection.
Great questions, thanks. Mfg's provided OMNI names of owners. EPA 3rd party design study platform, including requirements of combustors. Minimum 3 cords per year, never removed, never cleaned. These were well used combustors. So the combustors that were 9 years old, had a minimum of 27 cords. Could have been much more of course. But they were not hand picked.The OMNI report mentions only the age of the stoves removed from the houses (who provided them?) and not the hours on the catalyst. An 8 yr old stove only used on nights and weekends could still be under 12,000 cat hours. A cat stove in southern OR is going to see a lot less hours than the same model in AK so the age of the cat is less relevant information than the hours of use.
Nice thinking on the secondary combustion models but OMNI exercised due diligence on that observation, also made by EPA. Their data set included data from units currently certified (to the then requirements and the only tested method) of baffle and tube stoves.Also the "non-catalytic" wood stoves are all lumped together in an average that is contrasted with the catalytic woodstoves.
That suggests to me (given the absence of an explicit noting of the non-catalytic ones being modern tube stoves), that this average for the non-catalytic ones might be relatively high due to the inclusion of old (smoke dragon) stoves, rendering the relative advantage for catalytic stoves artificially high here as compared to when catalytic stoves would be compared to solely modern tube stoves.
So remember the Wood Stove Users Survey done in 2020? It showed that less wood but more frequent fires and cold starts began in Sept-Oct. More wood, fewer cold starts, Oct-March. But your point is well made...and that is defining "winter".I find issue with the claim that 45% of fires in woodstoves occur during non winter months.... Really?
It was thorough, comprehensive and conducted within a controlled environment. To be truthful, we were nervous through the process because we were excluded.Though they do say things about flame shielding.
Bottomline: good to wait for the real study, as if that's worth its weight in a scientific way, it should describe all boundary conditions, caveats, etc.
To me it's much less about the definition of winter and more to do with how they are calling fires. If they are talking about cold starts that may be true but still doubtful.So remember the Wood Stove Users Survey done in 2020? It showed that less wood but more frequent fires and cold starts began in Sept-Oct. More wood, fewer cold starts, Oct-March. But your point is well made...and that is defining "winter".
"Winter" is defined as December 21 - March 20, in every calendar I've ever examined for the dates, and I am surprised the number of fires held outside this window is as low as 45%. I would put more than half of my usage outside this narrow window, as my need for heat is generally from sometime in October to sometime in May. But as folks always say on this forum, we are hardly the average wood burners.To me it's much less about the definition of winter and more to do with how they are calling fires. If they are talking about cold starts that may be true but still doubtful.
Yep, I had filed this away with our purchase package with owner manual, receipt etc……I was sure I had read 10yr somewhere thanks for reminding me. Line item 1 is tad ticklish, lol. In the event the dealer is no longer in service is there an alternate process? I certainly can’t explain the “passage of time” But I can offer that things change with the passage of time ………..Fact: Blaze King, since 2012, has offered a 10 Year, 100% no-fault warranty against thermal degradation and delamination on all our combustors.
Winter can obviously have a broad meaning to most of us who burn for primary heat and here in PA I’ve seen a couple years where my heating demand was as strong or stronger from 10/1-11/30 compared to mild Dec/Jan. As someone who was a month ago running a large non-cat stove and every year at this time I was burned out, lol, no pun intended, and I would not burn the big box Schrader because it was just too much work to try and regulate and burn slowly….so we would kick on our electric baseboard..aka…$$$$ munchers…..fast forward to now our little Princess seems to be in her glory as she nibbles away at a load providing a low comfortable heat through chilly nights and mild days…….I almost will miss burning in a month……ALMOST……come on summer…..I find issue with the claim that 45% of fires in woodstoves occur during non winter months.... Really?
Wood burns Hot….Lol….SAAAYYY WHAT??I certainly can’t explain the “passage of time” But I can offer that things change with the passage of time ………..
Like deciding before loading on Monday night, how warm you need the house to be on Wednesday morning.Many things you can do with a boring system ;-)
That's true for this time of year for all stoves. It may be 40º in the morning when you get up, but could be sunny and 65º by noon. This morning here it was 44º, but I knew it was going to warm up to around 60º. I let electrons heat the house via the heat pump instead of burning wood.Stuffing any BK full of wood in shoulder season is a bit of a gamble, depending on the accuracy of your weather forecast.
That's true for this time of year for all stoves. It may be 40º in the morning when you get up, but could be sunny and 65º by noon. This morning here it was 44º, but I knew it was going to warm up to around 60º. I let electrons heat the house via the heat pump instead of burning wood.
Only if the forecast is reasonably correct. We're in a rainshadow area and often the forecast for Seattle will be rainy and cold while we get sun. Our house is such that the sun during this time of the year floods in the windows and warms it up quickly. We are often 10º warmer than Highbeam is, even though he is only about 30 miles away. Big mountains and Puget Sound make for some interesting microclimates and local weather conditions. A full load of softwood in the T6 is 12 hrs so that is what needs planning for during shoulder season.I'm sorry, but "noon" is far, far better predictable than "next day noon".
Only if the forecast is reasonably correct. We're in a rainshadow area so often, the forecast for Seattle will be rainy and cold and we get sun. Our house is such that the sun during this time of the year floods in the windows and warms it up quickly. We are often 10º warmer than Highbeam is, even though he is only about 30 miles away. Big mountains and Puget Sound make for some interesting microclimates and local weather conditions.
You just reminded me that I'm overdue to rotate my tires.
Of everyone I watch on this forum, it seems @Highbeam is very consistently replacing his combustors before 3 years. He'd be the high (or low?) water mark, on that subject, with very long burn seasons at the lowest burn rates. My question above about hours and not cords comes from a prior conversation with him, as he's surely burning more hours than me, but I'm also surely burning way more cords than him. Our un-scientific conclusion was that the cat is "working harder" at his lower burn rates, possibly also influenced by him burning mostly softwoods and me burning only hardwoods, and that possibly my higher burn rates leave less grams of unconsumed fuel going into the cat per cord burned. It sounded like a good theory, with some anecdotal evidence, however many variables we left unchecked.
In any case, if he's not already watching this thread, it will pop up in his notifications now.
Bottom line, you own a cat stove. This comes with several advantages, and one disadvantage: you will need to replace the combustor someday. Blaze King is giving you a free ride for 10 years, or one free combustor, depending on how quickly you ruin them. After that, figure on an amortization of $50 - $60 per year in combustor cost, to offset the several thousands of dollars worth of conventional liquid or electron fuel you've saved in he process of ruining said combustor. If I get 30 cords out of one combustor, and a cord contains roughly the same BTU's as 180 gallons of oil, I've saved $21,600 in the course of ruining a $200 combustor. I'm okay with that. Heck, if oil stays anywhere near it's present $4.69 local average, we could bump that savings to $25k per combustor, but I do expect it will come back down into the $3.60 range before my next replacement.
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