Put it together and added diesel fuel and it worked. Let it run for over an hour and it put out good heat. I am in Colorado at 7350 feet of altitude, and no problems. I have run it a few more times to heat the garage and so far it works without issue. I bought the model with blue tooth because it said it worked for higher altitude. I connected to the bluetooth with no issue as well. i can change the setting from my phone with no problem. Remote control works.. The only thing I have to say is I have not figured out how to change it from celsius to fahrenheit, if possible. But based on the temp range you can tell if it is on low or med or high.