You may want to cite some sources for that claim. Even the very early Kuuma 1 was clean burning, just not computer controlled. It's the sole reason Daryl started in this business, he wanted a clean burning furnace which didn't require constant chimney cleaning. He claims he has not cleaned his chimney in over 30 years. They have been in current form at least since 2010. 10+ years prior to needing to be. They have EPA test results from early 2010 exceeding the overall 2020 standards. They just needed to re-test for the 4 different burn categories specific to the 2020 standard.While Kuuma has been around for years, the furnaces were not always clean burning.
I know, this is the problem I have. It takes government intervention to force advancement when they could have simply done it on their own....to the benefit of all of us. I'm not doubting their ability, I'm doubting their lack of willingness to better the industry. It makes it even worse that they are a multi-million dollar company. These are the companies who should be leading the way with cutting edge technology, not waiting for the government to force them too. Maybe, just maybe, some aspects of government wouldn't be so big if these multi-million dollar companies would take more of an initiative to better the industry they serve.There's zero doubt that SBI can't replicate a furnace similar to the Kuuma, however they were just waiting till definite regulations hit before releasing a new furnace.
Due to what SBI has available at their disposal, I'll be disappointed if they don't come up with something far exceeding that of the Kuuma. If they don't, are they just sandbagging and just doing enough to meet the standard while having something in their pocket for any future even stricter standard? We will never know, but they have the money and resources to do some really good things for the industry.....but will they? This is what endears me to Lamppa. He used his own personal limited resources for the advancement of the industry. I'm not even sure we would have the current 2020 warm air furnace standards sticking (at least so far) if Lamppa didn't show the world it could be done. Not saying others were not capable, but they were not willing. Instead of them using their money/resources to advance their own products, I'm sure some were using it to fight the legislation instead.