Greenwood HRV1FIL Filter for HRV1 Heat exchanger hood_type_built_in Consequently they are more responsive

Consequently they are more responsive to run only when required

Greenwood Airvac were the first people to re-think the aesthetics  of a standard extractor fan when they introduced solid fascias to blend more effectively with modern interiors

otherwise wasted

Instead they constantly measure humidity levels and only activate when man-made spikes in humidity - caused by showering

it looks at the duration of occupancy to define running time rather than have a fixed running period

Greenwood HRV1FIL Filter for HRV1 Heat exchanger hood_type_built_in Consequently they are more responsiveGreenwood HRV1FIL Filter for HRV1 consisting of material x 2, handles x 2 and steel frames x 2 Each filter dimension 27cm x 14. 5cm x 2cm