This Diesel heater is above avareg Chinese heater .I watched a lot of heaters on YouTube at the end I chose one with out review and I really got lucky . it when start it goes to 10 to 11 wh for May be minute and com down to 2 to 3 wh till get to set temp and will go down to 0.5 to 0.4 wh the. Pump sound you almost you don't hear it and is not sharp bang and really almost no pump sound . I really recommend it and I believe is the best what you can get . I will apdate , but until now this the best after I return 2 from other vender.Dec/20/2019This heater still working perfect nothing change . its very good and I include photo I wonder .I had no error at all and I don't need filter this is only add on but is not necessary and why others try to open every thing and make them self the expert they must watch a lot of England people on you tubes .I never played with the setting fire the heater before I shut it down I run it on higher setting to burn and clean the chamber for about 5 minute and shut it down and automatically it cool and shut down . no fuss no problems no professor or expert. To be fair the heater is perfectly in working order with out rearrengment .my advice buy it instalet put diesel in it and run it no fuss no nothing it will work perfectly.
John Allen 
