Review on Portable Propane Heater: Mr. Heater MH9BX - Massachusetts/Canada Approved by Mike Goodwin

I bought 2 of these. The first was from a hardware store. It is said to have an oxygen sensor to prevent carbon monoxide. "I fell and hurt my ribs. I've been so dizzy since morning. The liver swells up,” said my friend in the tent. These are symptoms of carbon monoxide poisoning. I fixed this with a piece of chimney from the dryer that supplies fresh air to the heater. Then someone accidentally knocked him over. It never worked again. It was submodel number 000. The company discontinued it so I couldn't find a replacement. Revain to the rescue! I bought a submodel 232. It broke after a day or two. I threw away the packaging material and still couldn't send it back. I'm glad the engineers are working hard to make it work. If you buy it, keep the packaging material as you may need to return it soon.