Bests & Worsts Reviews from Amazon

I don't write too many reviews but, I felt guilty not giving one for this product because it saved my life last February. I am a full time van lifer and last winter I used a Mr. heater buddy propane heater to keep us warm. One night after hanging out with some friends at their place, my dog and I left to go to the woods to find a quiet spot to sleep for the night. I usually turn the heater on to warm up the van and then turn it off before bed time but this time I decided to not turn it off and just sleep with it on. I swear I remember cracking the max air fan vent because this heater only needs 9 square inches of fresh air to work at. Apparently I didn't do that and was awoken around 3 am by a disorienting loud beeping, I quickly got up open the door and turned the heater off. At that point I had no idea if this thing worked but it saved our lives and I am thankful. I have since switch to a safer diesel heater which exhausts outside the van and also am buying a back up CO detector, just in case. I have since learn to test them by lighting some incense, blowing out the flame and putting the detector in a pot with a lid and with the incense. This thing is still working great. Don't hold it in front of your car exhaust to test it, it damages them.