Have stayed warm and comfy this amazing winter, camping in as low as -7F. Still had a 0F sleeping bag just in case but completely opened up and used as a comforter coz it was a toasty 55-60F inside the tent on just the 2nd or 3rd heat setting. Really quiet but I also wouldn’t mind the hum and click of the diesel motor coz it’s white noise for me. Use the shortest hose you need, too long will cause heater to overhear and shutdown on middle and higher settings. Making the middle of the night when you wake up from the cold, terrible.