Keep looking -- sealed stoves do exist. I have a Vermont Castings "Dutch West" stove made about five years ago, that came from the factory with an with outdoor air hook up. I have been using the stove for several years, and it's a fine piece of work. We use it as supplemental heat in a semi-occupied (office and study) basement.
If you are not dead set against fossil fuel, a direct vent high efficiency propane may work for you.
Thanks for the info, Don. I built a house and installed a Vermont Castings Dutch West in '02, and at that time, either they didn't make one with an outside air hookup, or I just didn't find it. I'm glad to hear it's available now, because it's a great woodstove.
Elizabeth, I'm not familiar with woodstoves that also do cooking and water heating, but my little woodstove worked well even without an outside air connection. The house was tight (840 cfm50, 1.7 ACH50), so I'd just crack a window when I was getting the fire going. Once it was established and I closed the damper to send the exhaust through the catalytic converter, it used little air, and I could close the window.
Please post here anything else you find out about sealed combustion or direct vent woodstoves.
Beware of the cook stoves like the Vermont Bun Baker as they are almost always exempt from EPA certification and you have no way of telling if it is a low emission stove. Ask them first. A good but expensive way to go is a masonry stove with a oven. Tulikivi has great ones but it might be more heat than you need. Otherwise, there are lots of good European stoves with ovens, including some marketed here. Many should come with the dedicated outside air kit.
I don't have the answer to the question that you're looking for, but what I did for my wood stove (which is a half-step), is purchased a Fresh 80 (Swedish air ventilation device), and mounted it very close to the woodstove. Though not sealed combustion, the unit does a fairly good job of providing fresh combustion air without creating drafts when the stove isn't operating. This unit has an adjustable opening, so you can supply enough air for the stove running at full load, but not having wasteful, uncontrolled infiltration. My unit is distributed in the US & Canada by Thorma-Stor Products from Madison, WI.
Check out page 11 of 42 of this user's manual. There's a 'knock out' plate for mobile homes to bringin fresh air in a more controled manner. I couln't imagine his stove in a trailer home though!