This model comes in four variations, each with different extras like a Timer, Pull Cord and Humidistat. The variation with a Timer and Humidistat is the most expensive option, but one well worth looking into. If you have access to roof space, an inline extractor fan system would be quieter and more efficient. A PIR motion sensor starts the fan if you move within 4 metres, so for my smallish bathroom it is always on. Can be a pro or a con depending how you see it. Building regulations require that a domestic bathroom fan must extract a minimum of 15 litres per second. However, almost all extractors on the market exceed this and average 21-25 litres per second. There are even some models that go as high as 68 litres per second. Extractors come in two sizes: 100mm/4 inches and 150mm/6 inches. In most cases, the 4-inch fan will remove moist air well enough to keep the bathroom smelling fresh and be less susceptible to mould. The only reasons you would need to consider a 6-inch extractor fan is if:

Bathroom Extractor Fan | Bathroom Fan | Wickes Bathroom Extractor Fan | Bathroom Fan | Wickes

Bathroom 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. This is the cheapest fan we’ve tested, and it holds up well against the competition. Granted, it has less features than others (no timer or PIR) so if those are essential then this isn’t the fan for you. How much extraction you’ll need depends on how large your bathroom is, how well it’s already ventilated, and how many people will be using it. As extractor fans don’t use a massive amount of power, it’s best to go for the most powerful one available within your budget. Your bathroom is on the inside of the building and so has no windows at all. This is more common in flats

If you’re concerned anyone in your home might forget to turn on the extractor, then definitely consider getting a model that includes a humidity sensor. The sensor will detect if the bathroom’s humidity exceeds a certain level and automatically switch on the fan. Even if your fan doesn’t wake anyone, it might simply be an annoying sound. If you’re unwinding in the bath after a long day, the last thing you want is the drone of the extractor fan running.

Bathroom Extractor Fans | Extractor Fans | Screwfix

Available in seven different colours, the Awenta offers an affordable option with features you’d expect. Modern looking, this extractor fan fits in well with newly renovated rooms or extensions. The Envirovent SIL100T is probably the best overall extractor fan choice for a standard bathroom. Coming in white only, it should suit most bathrooms, but leaves it slightly limited when dealing with bathrooms of different colours.The LED is white and reflects off the fan well, especially if you go for a glass front. The PIR motion sensor and Timer are good, although are upgrades and don’t come with the cheapest model. It’s a good idea to look for a fan with an overrun timer. This means it will continue to run for a set period after you switch it off. In most cases, you won’t stay in your bathroom long enough for it to have removed all the humid air before you switch off the extractor. You do have the option of turning it off, but if you allow moisture to build up for a long time, the fan may struggle to get rid of it all by the time you turn it on. If your fan has a humidity sensor, you may not be able to turn it off which could ruin your chance at a peaceful soak. The Xpelair offers two speeds depending on how powerful you’d like it to be. This will vary on bathrooms size, and will have an effect on noise level. The slower the fan needs to work, the quieter it will be. The timer can range from 30 seconds – 30 minutes, again this setting will depend on how hard you need the fan to work.