Humidistat Fan
Ideal for bathrooms, a humidistat helps to prevent condensation, mould and mildew for a fresh and clean bathroom.
It works by measuring the humidity levels in the room and turns on or off automatically, based on a pre-set condition to ensure optimal humidity levels in a room.
We stock a huge variety of humidistat fans from leading brands like Vent Axia and Osily, for great performance you can rely on.
We also stock a range of continuously running extractor fans known as DMEV (Decentralised Mechanical Extract Ventilation) extractor fans, which provide low-level background ventilation throughout the day.
These 'trickle and boost' extractor fans will automatically boost extraction when they sense a rise in humidity levels, quietly improving airflow and quality, as well as reducing damp, mould and lingering odours and reducing maintenance and repair costs in the long-term.
Our range of dMEV extractor fans are designed to meet parts F & L of building regulations, and ensure compliance with SAP appendix Q for new build developers.
Filter by key features such as size, extraction rate, functions, price, noise level and colour to find the right bathroom fan for your home.
Browse our range below and get free UK delivery on all orders over £50 (ex VAT).
Zone 1 Extractor Fan with Humidity Sensor, 100mm, 97m³/h, 25dB, Chrome
Continuous Running Extract Fan with Humidistat, 100mm, 35l/s, White, IPX5
Monsoon Energysaver Zone 1 Silence Extractor Fan with Timer/Humidistat/Pullcord, 100mm, 97m³/h, White
100mm Bathroom Extract Fan with Humidity, Thermoelectric Shutter and Timer, 83m³/h, 36dB, IPX7, White
100mm Bathroom Extract Fan with Humidity, Thermoelectric Shutter and Timer, 107m³/h, 36dB, IPX4, White
100mm SDF Axial Extractor Fan with Timer & Humidistat
100mm Bathroom Extract Fan with Humidity, Thermoelectric Shutter and Pullcord, 107m³/h, 36dB, IPX4, White
FAQs
What are the Benefits of Using a Humidistat Fan?
Too much humidity in a room can lead to mould and mildew growth, especially in small or poorly ventilated household bathrooms or shower rooms, perhaps those without a window and natural light.
A humidistat fan draws the excess moisture out of the air and reduces the risk of mould growth and minimises the risk of health issues associated with mould over a long period, such as shortness of breath, watery eyes and a runny nose.
A humidistat timer also helps to combat overly dry air which can lead to irritation and dry, itchy skin. Excess humidity also creates an ideal environment for pollutants and allergens such as dust mites and bacteria.
A humidistat fan helps to improve overall air quality and keep your bathroom or toilet fresh and hygienic, particularly after bathing. As a humidistat only operates when needed, it is energy-efficient to run and consumes less energy than a traditional fan that relies on manual operation, which is more economical and can help to lower energy bills.
Here at YESSS Electrical, our fantastic collection includes several noise level options for quiet running at night, with no compromise on efficiency.
What Is the Difference Between a Bathroom Extractor fan and a humidistat fan?
An extractor fan and a humidistat fan both remove excess moisture, warm air, unpleasant odours and allergens from a room.
The extractor fan operates by pulling in air from the room and expelling it through a vent or duct.
However, a humidistat fan is designed for the sole purpose of removing moisture from the air by monitoring humidity levels and activating or turning off as needed.
It's automatic, so there's no need for a pull cord next to your light switch.
How do I Set Up a Humidistat Fan?
Building regulations state that Humidistat extractor fans should be installed as high as possible on the wall, no more than 400mm below the ceiling. Once connected to a power source, the humidity sensor can be adjusted to turn on or off automatically once humidity levels reach a certain threshold.
Always refer to the manufacturer's guidelines and employ the help of a qualified electrician when needed for installation.
How do I Know if I Need a Humidistat Fan?
Humidistat fans are suitable for rooms that are prone to excess moisture in the air. For instance, condensation and mould growth is a strong indicator of a high humidity level and excess moisture. A humidistat extractor fan will help to reduce moisture, condensation and mould growth.
How Should I Clean and Maintain a Humidistat Fan?
Regular cleaning of your humidistat fan will ensure it is operating at max efficiency once installed and can extend its lifespan.
For example, regular dusting of the grille and fan blades will prevent build-up of dirt and allow free, constant airflow without blocking the humidity sensor.
What is a DMEV Extractor Fan?
A DMEV Extractor fan, short for Decentralised Mechanical Extract Ventilation, is a continuously operating ventilation fan installed in individual rooms rather than as part of a single central system. It runs at a low background speed to help remove moist and stale air throughout the say and increases the airflow when higher humidity is detected, supporting cleaner air and bette moisture control in your home.
Are DMEV Extractor Fans Energy Efficient?
DMEV extractor fans are designed to operate over long periods. When running at their normal low speed, they typically use very little power because they rely on steady airflow rather than frequent high-speed operation, they can be an efficient ventilation option for domestic use.
Are DMEV Extractor Fans Loud if They Run All the Time?
DMEV extractor fans are designed for continuous use and operate at a low 'trickle' running speed for most of the time. At this level, they are generally veery quiet and unobtrusive. When boost mode is activated to deal with increased humidity, the fan speed rises temporarily before returning to its normal background setting.
Do DMEV Extractor Fans Comply With UK Building Regulations?
Our DMEV extractor fans are designed to meet the ventilation requirements set out in UK building regulations, including Approved Document F. They are commonly used to provide continuous ventilation in domestic settings, particularly in modern and new build housing where airtight construction increases the need for controlled airflow.