6 Things to Know About Xiaomi S40 and H40 Noise Levels

Both models run at nearly the same noise level On standard mode, the S40 and H40 both operate around 55-60 dB, comparable to a normal conversation.

The S40 gets slightly louder at max power Its extra suction makes it a bit noisier on the highest setting, but the difference is minor.

Noise alone shouldn’t decide your purchase The gap between them is too small to matter for most people.

Standard mode is quiet enough for daily use 55-60 dB won’t disturb others in the same room during normal cleaning.

Max mode is noticeably louder on both Expect a significant jump in noise when you need full power, regardless of model.

Focus on other specs instead Choose based on suction, battery life, or price rather than noise, since they’re effectively tied here.