Hi, we don't have an outdoor sauna, but an indoor sauna. We decided on the company Wille and so far everything is fine. It looks good, gets hot, communication was good, and the price comparison was good. It is a rather small company. We would have liked to visit a sauna exhibition as well, but didn't really find one. In FfM there is the company Klaws, which has a few, in Wiesbaden company Teka with a few examples, and in Knüllwald, where the above-mentioned company is located, there are 1-2 more providers.