Bathroom Fans: Fan Size, Extract Rate and Decibel Level
What size enthusiast do you need? For the majority of bathrooms, a 4" (100mm) fan is sufficient and is indeed the standard. If you are looking to replace a preexisting Best Bathroom Fans 2019 , and don't really know what size it is, may measure the front! Typically the measurement is taken from the back of the fan, and it is the diameter of the spigot, or pipe, which protrudes from the back of the fan that needs to be scored. If you can't remove the enthusiast, (you will get a certified electrician to do it) it is probably a 4" one. A 6" extractor fan is not normally required for a bathroom. These are generally more powerful and only necessary for kitchens.
In my thoughts and opinions, the 2 most significant things you should be looking at would be the extract rate of the fan, and the decibel level of the fan. Obviously, the best scenario is an extremely powerful fan with an extremely low decibel level. These seem to be the 2 factors in an enthusiast which are overlooked the most! A lot of individuals seem to go just on looks, and feel that all fans are generally the same.... big blunder! 4" fans range from an extracting rate of 54m3 per hour (the minimum level required because they build regulations) up to 118m3 per hour. For a standard bathroom I'd recommend anything from around 75m3 per hour, and when you take lots of baths or showers, creating lots of condensation, then anything above 90m3 hourly should so the job.
But since I say, look out there for the decibel stage of the fan, as a noisy fan can be particularly annoying, in particular when you are having a nice relaxing bath! Because a guide, anything below 25dB is considered very quiet. 35 dB would be classified as mid-range, and 45dB or above noisy.
Another thing that could be taken into consideration is the amount of energy that the bathroom fan uses. Nowadays, you can get precisely what is often classified as "low-watt" bathroom fans, with energy usage levers of 5-10 watts. However, even a vintage fashioned bathroom fan usually uses no more than 30w, considering how short a time they normally are on for, the cost difference in running these fans is only pence each month. I wouldn't focus on this is a major point to consider in your purchase.