I bought this heater to warm my garage and a second to warm my shop. Right out of the box it starts and runs with little to no smoke. Manual was helpful for fuel priming, but as a user you gotta be smart. You can easily overprime which will send fuel out the exhaust and could cause an unsafe situation.
My biggest (and possibly only) gripes are:
1. The remote isn't super resilient. I ended up breaking mine. Vevor replaced it free of charge which was wonderful, but without the remote there is no way to adjust the the heat setpoint.
2. the receiver for the remote is the secondary power button. It's attached only with a cheap piece of two-sided tape which isn't really great in a cold environment. I'm going to 3d print something to hold it in place that will either screw or bolt to the housing.
3. The exhaust pipe bent at 90 degrees doesn't clear the bottom feet, so it needs to be propped up on something. I'm mounting mine on the wall so it shouldn't be a problem but you can't just place it on the ground and route the exhaust outside.