Suction hazards in the swimming pool?
Hello, a question. There are enough reports on the internet that children were sucked into the pool and died. Is something so bad possible for something like this to happen in Germany?
How do I dimension a bathroom fan?
Hello, I have a small (approx. 8m²) bathroom in the basement with no windows. There's a concrete shaft that goes down to the attic floor (approx. 4m) and then leads to the roof via a 1.8m pipe. I bought a ducted fan (90m³/h) and temporarily pushed it into the pipe in the attic to test…