Bathroom extractor fan

BOSCH Fan 1500 DH W 125 Bathroom Extractor Fan, Ø125 mm, 182 m³/h, Humidity Sensor and Timer

Starts on its own when humidity rises and dries the bathroom without you touching a switch.

The BOSCH Fan 1500 DH W 125 is a wall-mounted axial bathroom fan for a Ø125 mm duct, with a built-in hygrostat and timer. It moves 182 m³/h of humid air, making it a practical choice for windowless bathrooms and toilets where moisture lingers after a shower. The easy-clean white plastic front hides a backdraught flap that stays shut when the fan is idle.

Hygrostat adjustable from 40% to 90% relative humidity

You set the trigger point during installation to suit the household. Once room humidity passes it, the fan starts by itself and keeps running until the air dries out, stopping condensation on tiles and mould in the grout before it takes hold.

Run-on timer from 3 to 30 minutes

The fan carries on for the chosen interval after the light goes off. Wired to the light switch, it finishes clearing the steam on its own, with no need to go back into the bathroom.

182 m³/h at a 45 dB(A) noise level

Power input is just 18 W, so long timer cycles barely register on the bill. The airflow suits a standard family bathroom connected to a Ø125 mm duct.