If it wasn't for the horrible instructions, this heater would be almost perfect. Of course, there is the loud clicking sound from the fuel pump, which I'm intending to replace with a quieter one, but otherwise it does what it promises to do. It heats up the interior of my camper van, which is what I intended it for. I wish the bluetooth app would allow to go into all the settings for time, timer, etc., as for the life of me I can't figure it out from the display on the unit itself with the instructions provided. Complete nonsense! But as I said, otherwise it's a great heater and it works.