This has an aluminum case unlike other heaters with a plastic case. That leaves the fan as the only thing that can burn. The kits online are all the same and ussually made by Vevor or with parts from the same factory. I do like this one bc it has the case and alpine mode. Alpine mode can be used at lower elevations also - it just runs the fuel air leaner which is good esp on low. I opened it after 3 months and the chamber was clean and only has a few fragments of soot at 4500ft elev. All diesel heaters don't have a cylinder so the only thing that happens when you run leaner is less fuel is used w more air. Richer fuel esp on low and at any altitude will clog the burner with soot - See youtube. It uses a 55 gallon drum of diesel over 2 month on setting 1&2 out of 6 in temps from 4 deg F to 35 deg F. It runs 24 hrs a day in a 20x10 room and only occasionally on setting 3 when at lowest temps for example 4 deg F during the day and we are awake and home. At night it runs on 2 at those outside temps and is in the mid 60s inside. This is typical for all these heaters - I own 6 total. The older style without alpine mode requires adjusting the admin settings via a youtube instructional video.I use a marine fuel tanks for some, drum, and the tanks from the kits for my camp trailer mounted on the tongue for easy filling. The largest tank I have seen in a kit is 15L, this kit with 10L can run for 3 days max, maybe 4 days on only setting 1 out of 6. But ussually in cold environments where it needs to run 24/7 it needs a higher setting at night. On setting 6 it 10L lasts 24hrs.I do like the remote which is actually digital not push button as pictured.The newer style remotes that are red and blue have wierd up amd down buttons to the Left and R of the power buttton L is up amd R is down. I wish there were vertical not horizontal, but its really not a big deal.This is currently the only diesel heater/furnace I would buy. But if Inwanted to spend double there are other brands w