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10 Best humidity sensor extractor fan

Welcome to our top 10 product reviews for humidity sensor extractor fan. We've scoured the market to bring you the best of the best, with products ranging from a 7.1 score up to a whopping 9.8 score!

Updated January 2026
bestBest value
3
FANTRONIX NAZAIR White 100 mm Quiet Powerful Bathroom Extractor Fan with Humidity Sensor Wall Ceiling Mounted Ventilation Damp Environment Control for 100 mm Ducting Silent Toilet Shower Ventilator
9.5
Excellent

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FANTRONIX NAZAIR White 100 mm Quiet Powerful Bathroom Extractor Fan with Humidity Sensor Wall Ceiling Mounted Ventilation Damp Environment Control for 100 mm Ducting Silent Toilet Shower Ventilator

Main Highlights

FEATURES: 4-inch smart extractor fan with a built-in Timer and condensation Humidity Sensor. Ideal solution for Bathrooms, toilets, showers, and other humid places. The fan is equipped with a specially designed backdraft damper.

LOW NOISE & ENERGY SAVING: The modern design of the impeller delivers a high 90 m3/hour extract airflow rate of 25 l/s. Special exhaust air straitening gators deliver low noise, only 25 dB(A) sound level. Energy rating: A+.

EASY INSTALLATION: The fan is designed for ventilation shaft mounting or air duct connection to ∅ 100 mm. Can be mounted on the wall or ceiling. For remote ventilation shaft location, it is recommended to use a flexible duct connection. Ingress protection rating against access to hazardous parts and water ingress is IP44.

MAINTENANCE FREE: Impressive maintenance-free bearings contain enough grease for 40 000 hrs of non-stop operation. Fitted with a reliable German motor.

ADDITIONAL TECHNICAL DATA: The humidity sensor activation threshold is adjustable from 60 % to 90 % & Turn-off delay timer is from 2 to 30 minutes. The fan is rated for operation at ambient temperatures ranging from +1 °C to +45 °C. Building Regulation Part F and L compliant.

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9.5
Excellent
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4
VENTS CRYSTALIS 100 mm 4 inch Silent Black Bathroom Extractor Fan with Humidity Moisture Sensor & Modern Design Glass Cover for Powerful Efficient Shower Kitchen Wet Rooms Ventilation
9.2
Very Good

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VENTS CRYSTALIS 100 mm 4 inch Silent Black Bathroom Extractor Fan with Humidity Moisture Sensor & Modern Design Glass Cover for Powerful Efficient Shower Kitchen Wet Rooms Ventilation

Main Highlights

VENTS CRYSTALIS is a beautifully designed residential extractor fan with a black glass cover. Created to complement any bathroom, kitchen or other wet room, while delivering quiet and efficient ventilation. The extractor fan can be easily connected to ∅ 100 mm air ducts and ventilation shaft mounting.

MODEL OPTION: 4 inch Extractor Fan with Condensation Humidity Sensor and Timer. The built-in humidity sensor activation threshold is adjustable from 60 % to 90 %. In addition, the fan is equipped with a specially designed backdraft damper to prevent backflow and heat losses during the fan standby.

HIGH QUALITY MOTOR & PERFORMANCE: High airflow rates are achieved with low noise levels due to the unique coupling of mixed flow technology with our energy-efficient AC German motor. Maintenance-free bearings contain enough grease for 40 000 hrs of non-stop operation.

TECHNICAL DATA: Powerful 90 m3/hour extract airflow rate 25 l/s. Energy rating: A+. Power: 8W.

SAFE & EFFICIENT: The Ingress protection is rated to IP44 and can be securely installed in Zones 2 & 3. The extractor fan meets all the energy requirements to date with very low specific fan power at 0.32 w/l/s, and is compliant with Building Regulation Parts F and L. Energy rating: A+.

Wattage : 8.0 watts

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9.2
Very Good
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Why Trust One Clear Winner?

One Clear Winner spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own.

About One Clear Winner

How We Tested

We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

Learn more about testing

51

Products Considered

62

Consumers Consulted

24

Hours Researched

Why Trust One Clear Winner?

One Clear Winner spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own.

About One Clear Winner

How We Tested

We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

Learn more about testing

51

Products Considered

62

Consumers Consulted

24

Hours Researched

6
XIIW 4'' 100mm Bathroom Extractor Fan with Humidity Sensor and Timer Overrun Delay, Silent Bathroom Fan with Backflow Flap, 95 m³/h, 12 Watt / 34 dB for Bathroom, Toilet, Kitchen - White
8.8
Good

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XIIW 4'' 100mm Bathroom Extractor Fan with Humidity Sensor and Timer Overrun Delay, Silent Bathroom Fan with Backflow Flap, 95 m³/h, 12 Watt / 34 dB for Bathroom, Toilet, Kitchen - White

Main Highlights

With humidity sensor: when indoor humidity reaches the threshold value you set, the bathroom fan works automatically until the humidity is below the specified threshold. Perfectly solve the problem of unpleasant odour and mould in the room

Timing function: bathroom fan has a timer function that you can set according to your wishes (1 minute - 30 minutes), easy installation and operation, extremely cost-effective maintenance.

Backflow conductor: the fan has a backflow protection to prevent insects from flying into the house, backflow flap is prevented from cold or damp air from the outside by the switched off, for wall mounting.

Quiet operation: the exhaust fan uses a bearing motor, which has the characteristics of quiet operation (<34 dB) and a long service life. White bathroom fan compatible with a variety of decoration styles, provides a comfortable and healthy environment.

This bathroom fan does not need to be connected to the grounding cable, the installation instructions can be found on the detail page. OPTIMAL ROOM SIZES: WC: 3-4m², Bathroom: 3-9m², Bedroom: 7-13m², Kitchen: 3-7m², Office: 5-13m².

❤️At low room humidity, the product starts very frequently and with a long delay time, it works continuously. Please set the humidity setting to 3 lamps (80%) and the delay time to 5 minutes.

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8.8
Good
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7
SBONNI 4 Inch Bathroom Extractor Fan with Timer, Humidistat, Thermostat – Powerful and Silent Ventilation Fan with Real-Time Humidity & Temp Display for Shower Toilet Ceiling Wall (With Plug)
8.6
Good

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SBONNI 4 Inch Bathroom Extractor Fan with Timer, Humidistat, Thermostat – Powerful and Silent Ventilation Fan with Real-Time Humidity & Temp Display for Shower Toilet Ceiling Wall (With Plug)

Main Highlights

👌 30-day refund, 3 years warranty, 24/7 customer service, and patented design.

Versatile Functionality Extractor Fan: Automatically detects and adjusts humidity and temperature levels, effectively preventing mould and condensation. Features an independent timer (The timer needs to be set each time) .Choose ON mode for 24/7 continuous operation or OFF mode for instant shutdown—simple, efficient, and tailored to your needs.

Smart Control Box Design: Equipped with an LCD display, the control box shows real-time humidity and temperature levels at a glance. Easily adjust humidity (0%-99%), temperature (0℃-99℃), and timer (0min-9h50min) —no need to disassemble the unit, making operation effortless and convenient.

Unique Replaceable Sensor: Say goodbye to costly repairs! Easily replaceable external sensor extends the extractor fan bathroom's lifespan and reduces maintenance costs. It avoids motor heat interference, ensuring precise and reliable performance.

Easy to Install: The bathroom fan extractor comes with a 1.5m BS power cable and plug for plug-and-play convenience. Easy to install on walls, windows, or ceilings. Ideal for bathrooms, kitchens, garages, and any humid space. Polished panel for easy clean.

Note: The 100mm extractor fan automatically turns on when the set humidity or temperature is reached. To prevent frequent on/off switching and extend lifespan, it only turns off when the humidity drops 4% below and the temperature drops 2°C below the set values.

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8.6
Good
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