Buyers Guide for Bathroom Extractor Fan

Buyers Guide for Bathroom Extractor Fan

Installing a reliable Bathroom Extractor Fan unit in your bathroom will remove excess moisture and unpleasant odours from the air, making it more breathable to live with. You can move to our list but first, let’s go over some of the factors that will influence your choice of extractor fans.

When buying the best powerful 100mm extractor fans for the bathroom, a few things you should know for an educated purchase decision.

Extraction Rate

Prior to focusing on appearance, there are specifications that may be the most important feature. You’ll want to know how fast a fan extracts air and how much air it can move in a given time period.

The extraction rate is determined by motor speed and air circulation, which is measured in cubic feet per minute (CFM). The average speed is between 20 and 30 CFM, which is sufficient to clear the humid air of a shower or medium size bathroom.


The extractor’s size will determine where it can be installed on your bathroom ducts. You will need to measure your ducts to determine the best unit to install.

Normally, four inches (100mm) of ducts are required for extractor fans; however, six inches (152mm) extractors need a larger six-inch wide duct to necessitate proper airflow. When you go through our recommendations, check the fittings size for your requirements.

Fan Noise

If you want a fan without a nose, there are some units that offer less noise with a soundproof design. You will need to look for lower decibel measurements. The lower the number means the quieter the sound, which is ideal to place in domestic bathrooms

Normally less than 20dB is considered an ideal level for notice-free extractions. However, cheaper units, on the other hand, have relatively high sound output.

Timer and Humidistat Features

The timer feature is a good choice because it will run the exhaust fan for 30 seconds to 30 minutes after you use the bathroom. The settings can be adjusted to the desired time limit and then turned off themselves.

On the other hand, a humidistat is an inbuilt sensor that detects humidity levels and turns on fans when it detects atmospheres. This is a must-have feature if you want to save time by automatically removing humid air and moisture after a shower without the need for a manual push.

Ben Wells
Ben Wells is a tech enthusiast and expert in the field of auto accessories and electronic household items. With a background as a PC critic and editor for a tech blogger, Ben has spent the past four years writing objectively about home appliances and leisure technologies for BestB. Known for his unbiased coverage, Ben is passionate about staying up-to-date on the latest technological advancements in the automotive and home electronics industries. When he's not reviewing the latest products, Ben enjoys camping and travelling.