Id be a little concered about the gasses that come off of those units, especially in a confined space. There are several articles that claim you should never use one of those ventless heaters, so do some research on that aspect. That said I do have one in my house but it is only used to heat the house up to temp before the furnace or wood stove can take over.
Even "vent free" units consume oxygen while supposedly producing no harmful gases...so you still need to have a vent or window opened a bit to avoid asphyxiation. Plus, propane heaters are notorious for the volume of moisture they create as condensation.
Ventless propane heaters have oxygen sensors that will shut it off if oxygen is depleted. The real problem is the moisture, it will be raining inside. Windows will look like the water hose is running on them.
Ventless propane heaters have oxygen sensors that SHOULD shut it off if oxygen is depleted. The real problem is the moisture, it will be raining inside. Windows will look like the water hose is running on them.
Fixed that for ya... I've had a ventless heater "Big Buddy" suck the o2 down in a room to well below 19% and keep chugging right along...
I have marine propane wall heater. It uses a 1" exhaust pipe. On low in the winter will keep the 37 foot house boat i have warm and on high it will just be to hot. It barley uses fuel. it has auto off it there is a oxygen issue. but no moisture since it has a flew pipe. plus you can put a coffee cup on it or soup etc. very adjustable plus its very easy to install.
Best heater I have ever used but spendy. SIG MARINE Cozy Cabin Propane Heater | West Marine
Its threaded into the bottom so you could use a hose to tank or even the small screw on bottles. They also sell a diesel unit but my boat was unleaded. I removed this heater and installed propane forced air system ( which does not work a 10th as good and runs my batteries all night. So I'm just moving it to the bus.
ON the boat we have to 7 gallon tanks and they last all season or more running every thing. This heater has small burner but the whole unit becomes a great heat mass and sucks the cold off the floor as the heat rises and creates its own fan if you will. If it gets to dry a coffee cup on the top of it puts moisture back in the air. when its freezing in the winter that air can get dry and makes my nose bleed so I'm a fan of a little moisture.