Originally Posted By: supton
I was using "proper" K2, cracked open a door, and the fumes got to me after an hour. Maybe I'm sensitive to it, maybe I sat too close, or maybe I'm nuts. But I decided I wasn't going to use the K2 heater unless if it was last resort. Maybe propane fumes would be more "safe" than K2 fumes, dunno.
I should take it out of the shed and test, come to think of it. It's been sitting for a few years.
A lot of having a good kerosene heater is proper maintenance.
At least once a year you should "burn" the wick. Basically what you want to do is put the heater outside, get as much fuel as you can out of the tank, then light it and leave it alone until it burns out. It's not a bad idea to relight it a couple of times after it extinguishes itself. The heater will smell REALLY BAD while doing this, and much of the reason is because you're burning off tar that has accumulated on the wick. Once the heater has been burned, if there is any remaining tar along the edge it can be manually removed. If its especially bad, you might try trimming the wick or just bite the bullet and replace it.
Before you refill and light it, inspect the chimney very carefully and make sure it's completely clear. The biggest cause of soot and smoke is poor draft, which will happen if the chimney is not clean. Once lit and warmed up, inspect the flame to make sure it's completely even and take a close look at the wire mesh inside the chimney. It should be even in color and in most heaters will be a nice cherry red-if you see any high or low spots in the flame, or variations in color around the chimney you have a spot in the wick that needs some additional attention.
Good K1 white kerosene in a properly maintained heater will smoke slightly at start-up and will vaporizes a little bit when turned off, but overall they don't give off a huge amount of odor.
With that said, I always open the garage door an inch or so when I have mine on.
I have a small propane heater that I keep in the garage also. There's no question that it's the cleaner burning of them-although I'd still be afraid to use it with the garage completely closed. It is a LOT more expensive to run, though, and for a unit the same physical size as my kero heater it puts out a lot less heat.