VentFree.org FAQs. I learning stuff here!!!
But it still makes me uncomfortable! Grew up in a time when everything gas operated had to be vented. Many home gas fired appliances still have to be vented. i.e. hot water tank and clothes dryers. If a gas meter reader sees a improperly vented hot water tank, they turn off your gas supply to this day!!!
Living in the cold wintery north, hardly a year goes by that one does not read locally about someone dying in a RV in the winter time because of improperly operated heaters. And often read locally about who families dying from CO (carbon monoxide) deaths because of defective or improperly vented furnaces. I remember when "vent free" heaters came on the market and were available in some states and not in others. We could buy one in the neighboring state of Pennsylvania, but not in NYS. And no respectable appliance installer would be caught installing such a heater!!!
But it appears that when installed and operated properly that "vent free" is perfectly safe. It is amazing that a old dog can still be taught new tricks! But the key is proper installation and proper operation. Improperly installed and improperly operated can bring things we don't want to think about. And I'm not installing any heating appliance in my home or RV that is not certified by a authorized agency.
