All of the above extractor fans are suitable for 100 mm ducting but the designs mean that they vary in size. For example, some include a fascia that adds to the aesthetics but doesn’t contribute to the performance of the fan. We advise that you choose a size that best suits your bathroom décor and can be easily installed without additional drilling required. Over Run Timer Finally, if you think you (or anyone else in the house) will forget to turn the fan on, consider a model with a humidity sensor. This automatically activates the fan when the level of moisture in the air exceeds a certain threshold. This sensor may need occasional cleaning, though, or the accumulation of dust or grime will hinder its effectiveness. What about noise? The rate at which air can be extracted from the bathroom is one way of determining the performance of an extractor fan. The measurement used for the extraction rate is litres per second (L/s) or metres cubed per hour (m3/hr). Unless you are renovating an old house or extending your property, you’ll more than likely be replacing an old unit rather than installing it from scratch. Therefore, to replace a bathroom extractor fan, follow the ten steps below:

We found the Best Humidistat Extractor Fan to be the Xpelair C4HTS. It is one of the most popular humidistat extractor fans on the market, runs quietly at just 16dB, has two speed options (15l/s and 21 l/s), features a run-on timer, and more! Are humidity extractor fans any good? We turned the timer down to the lowest so we can better see when/why it's turning off and we put the humidistat to the highest so that presumably it should only go on when we're showing and not running needlessly. Most extractor fans for domestic bathrooms attach to 100mm openings. Therefore, if you are replacing an old unit, the installation shouldn’t take too long as there is no need to create a hole in the outside wall. In terms of noise output, they’ve improved massively over the years and all of our recommendations output less than 30 dB, which is considered almost silent. Older extractor fans are known for being noisy and this can be highly frustrating. However, manufacturers have gone to great lengths to make them far quieter than they once were.IPX4 rated, the Simply Silent C4HTSR range is suitable for use in bathrooms, toilets and cloakrooms in Zone 1 if protected by 30mA RCD, otherwise Zone 2 and can be window, wall, ceiling or panel mounted. Applicable to the following models: C4S C4R C4SR C4TS C4TR C4TSR C4HTS C4HTR C4HTSR C4PS C4PR C4PSR These fans have both an overrun timer and a humidistat. There is an automatic mode and manual modes. This means the fan will either come on when the ambient humidity in the rooms goes above the set point. Or the over run timer will function the same as above to help clear excess humidity after the switch has been turned off

The extraction rate of most bathroom extractor fans ranges from 18 to 26 litres per second. In short, the higher the volume an extractor fan can extract will result in improved performance with regards to reducing moisture and odours. However, too much extraction can lead to a negative air pressure, which can result in coldness in the room.The quality of the bathroom extractor fan also plays a big part because once the fan begins to age, it can become noisy. This is because motor bearings can begin to wear and blades may start oscillating against the housing. Therefore, choosing the best possible fan you can get your hands on will ensure that the quality remains for many years. The Size

Electricity and wet environments don’t match and it’s vital that the extractor fan you choose is safe to use. All manufacturers of bathroom extractor fans will state an industry standard known as an “IP Rating”.

The precise duration of the overrun is normally configured during installation, with most fans offering a range between 30 seconds and 30 minutes. You might as well tend towards the latter end of the scale as the cost is very low: on average, a fan like this uses around 8W. Flow straighteners guide air through ducting which reduces turbulence, smoothing and making the air flow laminar. Humidity extractor fans can be very effective in reducing excess moisture in a room or area. They work by drawing in humid air and expelling it outside, which can help prevent mould growth, reduce the risk of respiratory problems, and improve overall air quality. However, the effectiveness of a humidity extractor fan depends on several factors, such as the size of the fan, the size of the room, and how often the fan is used. It is also important to properly maintain the fan, including regularly cleaning the filters and ensuring that it is installed correctly. Overall, humidity extractor fans can be a useful tool in managing humidity levels, but it is important to do your research and choose a high-quality fan that is appropriate for your specific needs. Hands-On Expertise & Collective Knowledge: Our team boasts extensive DIY experience and in-depth knowledge. The C4SR range comes with a two year UK guarantee for peace of mind. Features of Xpelair Simply Silent Contour C4HTSR Include:

Installing a bathroom extractor fan from scratch can be far more complex due to the holes and ducting required. For a detailed tutorial, we highly advised that you read this guide before attempting the installation yourself. Conclusion Vent-Axia has really pushed the boat out with this brand-new model. Aside from shifting up to 39l of damp air per second, this bathroom extractor comes crammed with more sensor tech than any other model on the market. In fact, it has a sensor for everything, even odour. Yes, that’s right, when this clever little air mover detects a nasty smell, it either switches itself on or, if already running, speeds up the fan, returning the bathroom to its original sweet-smelling scent in a thrice. Industry Connections: We maintain close ties with manufacturers and brands, offering insights into trends and upcoming products. Depending on this rating will determine how close the fan can be installed to the bath or shower. These areas are known as zones and they are located a specific distance away from the bath or shower. How To Replace a Bathroom Extractor Fan Will comply with Building Regulation Parts F and L if installed in accordance with the manufacturer's instructions and by a competent person.To help you make an informed buying decision, below is our detailed guide to extractor fans for bathrooms. Extraction Rate