I think one of the most important accessory for any wood burner is the thermometer , and was surprised when 3 of my friends told me they had bought incerts and had them installed and when I mentioned thermometer they said what for ...... I said to maintain a safe operation temp and protect your stove from warping..... they at no point did a dealer mention it to them. One guy burnt all his wood really fast because he ran it so hot broke a weld and a fire brick.... I have 3 on my stove and stack and use them as a guide on how to run the stove ..... To me they are a must....They all thanked me later and said there getting better and longer burns ...