Mainly used as an exterior vent to extract damp and moist air from inside a building. Hob extractors, kitchen extractors, cloakrooms, wc, bathrooms, ensuites and tumble dryer outlets are the main uses. It does suit period properties although its quite a statement piece even on contemporary buildings. It has been used on a significant number of listed buildings and properties in conservation areas. The conservation vent has been instrumental in improving extractor efficiency as installers have been able to extract close to where the fan is positioned whereas in the past theyve ducted metres and metres of flexi pipe to terminate on a back wall to comply with building consent.
It can also be used as an interior vent to allow air in for combustion especially with regards to stoves.