![]() Please drop us a line if you have any specialist requirements. Mark Wood, of Wire Electricians, York, explains a likely reason for your bathroom or kitchen extractor fan not working.Check out our website. If you have access to roof space, an inline extractor fan system would be quieter and more efficient. The silent fans are particularly popular. Units with integral or inline back draft dampers stop drafts coming back down the ducting and prevent condensation build up within the system.īathroom extractor fans generally need to extract between 10 and 20 times the volume of the area of the room it is applied every hour, depending on use, i.e a 12m3 bathroom / shower area would require an airflow of 120m3/hr to 240m3/hr. As a general rule, small bathrooms typically require about 50 CFM, while large bathrooms require around 100 CFM. Length x Width x Height x 0.13 Number of CFM (round up to nearest 10) For example, 8.5 feet x 9.5 feet x 8 feet x 0.13 83.98 (round up to 90) Choose a fan 90 CFM or larger. Use a centrifugal bathroom fan if your duct run is longer than a 1.5 mtr and up to 12 mtr, although they are physically larger this type of fan motor offer greater pressure. Some manufacturers use the CFM formula below. Dry, well-ventilated bathrooms are important in preventing mold growth in bathrooms.Ĭontrolling moisture with the help of an adequate exhaust fan is key.Bathroom Extractor Fans, quiet fans for wall, ceiling and window mounting, high airflow low dB shower fan options, intermittent or constant extraction available on 230V or SELV Low voltage.īathroom fans of axial type are suitable for mounting through the wall and in the ceiling if using a very short duct run. It may also be a good idea to install a timer switch in bathrooms which will automatically shut off the exhaust fan after a preset amount of time. 15 minutes may be longer or shorter than required to keep your bathroom dry, depending on the bathroom size, building materials, windows, etc. We recommend using bathroom exhaust fans for 15 minutes after using the shower to help move humid air out of the living space. It is also important to make sure that the exhaust fan is vented outdoors. Keeping the extractor fan in your bathroom clean and free from dust and debris can help to keep it running for longer. Keeping the bathroom door open while running the fan will allow for air exchange from other parts of the home. If the fan holds up the toilet paper, then the fan is working properly. Ventilation is key to reduce mold in the bathroomĪ simple way to test your fan’s suction is to take a single square of toilet paper and place it along the fan vent while the fan is running. A bathroom exhaust fan is essential in removing excess moisture and keeping bathrooms ventilated, but how do we know if our exhaust fans are working properly? Just because we can hear them doesn’t necessarily mean that they are effective. ![]() And where there is moisture, there is the possibility of growing mold. How Effective is Your Bathroom Exhaust Fan?įor obvious reasons, bathrooms can be major sources of moisture in homes. Industrial Hygiene and Compliance Testing.Cleaning, Verification & Coronavirus Testing.Second, make sure that the impeller is tightly screwed on. If there’s any damage, then it needs to be fixed as soon as possible. Water Filtration for All Building Types First, check the extractor ducting for damage.
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