Glad to hear that, bob. I had a bad experience years ago living in a remodeled "loft" over a tractor shed on a farm, a little too air tight, using a kero heater, got pretty sick, so you can imagine I'm just a wee paranoid. Hence the search. I enjoyed the RV furnace in my 28 ft class C, but it was a fuel hog, not to mention forced air which beat heck out of the house batteries. So, when I found this one I thought, hmmm, vented, exhaust blower, catalytic, compact. Small model specs are 3k BTU, 12Vdc, 1/8 lb per hr propane consumption, operating cost about .04 per hr, Current draw at startup (2 minutes)is 5 amps, operating draw less than 0.5 amps, H=14",W=12", D=5 3/8". And thermostatic control. Might be a bit pricey, haven't heard back yet. But guess I'd rather be pricey and alive than frugally dead...LOL I believe the info page said something about zero emissions and zero condensation as well, which is a plus in such a confined space.<br>From their site..."<br><p align="left">THE PLATINUM CAT utilizes a power vent system which exhausts all combustion by-products to the outside of the living area, which automatically replace oxygen used for combustion. The vent system prevents buildup of unhealthy indoor air pollution and eliminates any chance of accidental asphyxiation.</p> <p align="left">All hydrocarbon- fueled heaters (kerosene, gas, coal, wood, oil, etc.) produce undesirable combustion by-products, regardless of how efficiently the heaters combust the fuel. These by-products can include carbon dioxide, nitrogen dioxide, sulfur dioxide, carbon monoxide, and water vapor. Unless vented outside the living space, these by-products can drastically increase the level of indoor air pollution. They are especially harmful to the elderly, small children, pregnant women, and those suffering from respiratory or cardiovascular diseases. In addition, all hydrocarbon fueled heaters produce carbon monoxide. However, because of the low combustion temperatures at which they operate, catalytic heaters produce far less carbon monoxide than flame combustion heaters. The level of carbon monoxide produced increases dramatically when the oxygen level in the living space is reduced, because the lower oxygen level reduces the efficiency of the combustion process.</p><p align="left">5200 BTU<br></p><p align="left"><img alt="6P12B" src="
http://ventedcatheater.com/images/6p12b.jpg?869" align="middle" border="0" hspace="0"></p><p align="left">3000 BTU<br></p><p align="left"><img style="FILTER: alpha(opacity=NaN); WIDTH: 171px; HEIGHT: 168px; opacity:NaN;filter:alpha(opacity=NaN);FILTER: alpha(opacity=NaN); WIDTH: 171px; HEIGHT: 168px; opacity: NaN" alt="_3P12B" src="
http://ventedcatheater.com/images/_3P12B.jpg?869" align="left" border="0" height="473" hspace="0" width="600"></p>