I don't think going after existing stoves or fireplaces is going to bring in much revenue. The real revenue is in electric power and fuels that they an tax. Obama wants electricity rates to skyrocket and that isn't to save the planet, but to get revenue to pay off his campaign contributors. The key to getting all the money is to keep people from buying new wood stoves. My stove is about $100 a month whereas propane would run about $500 a month even before the taxes Obama would want.
OTOH you have a point. These regulations are like gun laws, first they ban they sale of something but allow you to "keep" existing ones, then they turn around and ban the existing ones. IMO if they do that with wood stoves they would get enough backlash to lose significant political power. So while I am against their encroachment, it s the kind of political fight I would like to have.
Really? How about when they decide that there really is no difference between a newly-manufactured stove and a previously-manufactured one, and then levy retroactive taxes on them for their alleged dangers? THEN they decide to guesstimate how much wood each stove is capable of burning and levy another tax on the owners based upon that? How much wood, exactly, is your wood stove or fireplace capable of burning?
My experience is that tax-estimators (Infernal Rectalvue Sphincterplumbers) ALWAYS estimate on the attitude of Whatever-Gets-The-Most-Taxes-In, and you will surely be SOL when that happens.