So, for example, if your bathroom is 54 metres square, you will need a 54m3/hr fan. If your bathroom is 100 square feet or less, you will need an extraction rate of at least 1cm cubed per square foot of room area. In order to know what size bathroom exhaust fan you need, refer to the cm3 (cubic metres squared) measurement of your fan. This size refers to the size of the impeller (the revolving part inside the extractor fan that sucks the air out). However, the most common type of extractor fan typically found in homes is the axial fan.Īre bathroom extractor fans a standard size?ĭomestic extractor fans tend to come in two sizes: 4 inch/100mm and 6 inch/150mm. This also means you will need a more powerful fan - usually a centrifugal fan. If your bathroom is a long distance from an external wall, or you are fitting it in the ceiling, you will require a longer 'duct run’. This refers to the hose that carries the old air from inside to the external vent, similar to that you’d find in a tumble dryer. You will probably hear the term ‘ducting’ when searching for your extractor fan. These are usually fitted in the ceiling and can be used for extra-long distances of 40 metres or more. They can move air long distances along their ducting, which means they have a more powerful extraction rate - and are often noisier. Centrifugal - These are designed for bathrooms that are not close to an external wall (over 1.5m away).Axial - These connect directly through an external wall and are used when the air doesn't need to be moved long distances.There are a few different types of extractor fan for you to be aware of. Which one is best to buy for your bathroom? When it comes to choosing your bathroom fan, you may be wondering where to begin with all the different types available on the market. Read more: How to Remove Bathroom Mould What different types of bathroom fans are there? Installing a suitable form of ventilation ensures you can enjoy your bathroom at its best for as long as possible. This is because water and steam can more easily disperse around the room and wreak their havoc! If you have a wet room, you will find a bathroom fan especially useful. A fan helps keep your air nice and fresh! Finally, all that damp, stale air can lead to unpleasant smells in your bathroom. An extractor fan is a great line of defence against this. They can damage your bathroom fittings such as shower screens and curtains, mirrors, vanity units, and tiles. Condensation and mould are both destructive forces in your bathroom. Proper ventilation can help stop it from forming. The condensation your shower creates can lead to a worse problem: mould. Everyone can attest to the amount of steam a shower produces. The main benefits of installing an extractor fan are: However, they also have benefits beyond your legal regulations. What are the benefits of a bathroom extractor fan?Ī bathroom extractor fan is the easiest way to ensure that your bathroom meets air ventilation requirements. If, for example, mould or dampness are persisting issues, a fan can help reduce their effects. If you have an old bathroom with only a window as a source of ventilation, it might still be a good idea to provide extra ventilation. It is pretty much standard for bathroom exhaust fans to meet these requirements, though it should be stated in the product description of your fan check before you choose it. Basically, the 15l/s, or 54m3/hr, refers to the measurement of how much old air is replaced by new air. You might be wondering what the last point means.
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