I have sused this device for a while now in my CampingTrailer and it works very well mounted in theoutside box. Now in Aplil/Maj season has it been super to use it in the lowest powermode only take 0.1/Lhour and keep the home perfektly tempered in outside temp 2-6 degreeds celsius.Low noice in these lower effects, easy and clear control panel.Remember to use the primefunction when you install the device or run out of fuel.We will buy more of these for other applications