Are Tent Heaters Safe?

I performed several tests with an industrial gas detector as well as other safety tests... what was the verdict?  Is it ever a good idea to use a heater in a tent?

If you want to see which heater I would recommend if you want to use it in a tent, check out my video, here: Best Tent Heater (Industrial-Detector...

During my research, I reached out to Mr. Heater and they actually made some false claims.  You can see what they said in my other video here:  Mr. Heater Lied To Me

If you want to see the results of all my tent heater tests, you can see the data here on my website: https://decideoutside.com/tent-heater...