The noise level of my product is louder than statedUpdated a year ago

Please note, when these noise levels are tested for our products, they are tested in special sound chambers in independent laboratories which ensure the product is being tested in an environment where there is 0dB background noise. The lab is then able to measure the noise level on each individual fan speed, and they then take an average of those four measurements and repeat this ten times on different fans from the production line. This is called the sound power level, what you are measuring in your domestic environment is called the sound pressure level.

The sound pressure level is a different measurement completely and will take into account all background noise and then all other factors e.g. distance from the product the measurement is taken at and the quality of instrumentation used.

Our data is therefore completely different as we are quoting sound power and you are measuring sound pressure.