Envirovent 100mm Classic Bathroom Extractor Fan with Humidistat, Timer & Automatic Shutter | CLAS100XHT

Quiet 4" Bathroom Extractor Fan with Humidity Sensor, Timer & Automatic Shutter

The EnviroVent CLAS100XHT Classic 100mm Extractor Fan is a high-performance domestic ventilation solution, designed to automatically control humidity and improve indoor air quality in bathrooms, shower rooms, WCs and utility rooms.

Featuring an integrated humidistat, adjustable overrun timer and thermo-electric automatic shutter, this intelligent 4-inch extractor fan removes excess moisture only when required, helping to reduce condensation, damp and mould while improving energy efficiency.

Manufactured from durable injection-moulded plastic and powered by a long-life ball bearing motor, the CLAS100XHT offers reliable, quiet operation and is suitable for both wall and ceiling installations.

Available now from Alert Electrical your trusted UK supplier of ventilation systems and bathroom extractor fans.

Features

• 100mm (4") Bathroom Extractor Fan
• Integrated Adjustable Humidistat
• Adjustable Electronic Overrun Timer
• Automatic Thermo-Electric Shutter
• 95m³/h Extraction Rate
• 26 Litres per Second Airflow
• Quiet 32dB(A) Operation
• Ball Bearing Motor
• Suitable for Wall, Ceiling & Panel Mounting
• IP44 Rated
• Double Insulated
• Thermal Overload Protection
• 2 Year Manufacturer Warranty

Intelligent Humidity Control

The built-in humidistat continuously monitors room moisture levels and automatically activates the fan when humidity rises.

Adjustable Humidity Range

• 60% RH
• Up to 90% RH

This ensures effective moisture removal while helping to reduce unnecessary fan operation.

Ideal for:

• Bathrooms
• En suites
• Shower rooms
• Utility rooms
• Cloakrooms

Adjustable Overrun Timer

The integrated electronic timer enhances ventilation after the room is vacated.

Timer Operation

• 50-second activation delay
• Adjustable run-on periods:
• 5 Minutes
• 20 Minutes
• 30 Minutes

Helping remove lingering moisture after showers or baths.

Automatic Thermo-Electric Shutter

The integral automatic shutter:

• Opens when the fan operates
• Closes automatically when switched off

Benefits include:

• Reduced draughts
• Improved energy efficiency
• Prevention of backdraughts
• Protection against insects and dust

Quiet Yet Powerful Performance

Despite delivering impressive extraction performance, the CLAS100XHT operates at only:

32dB(A) at 3 metres

Airflow Performance:

• 95m³/h
• 26L/s

Suitable for compliance with domestic ventilation requirements.

Built for Long-Term Reliability

The fan features:

• Injection moulded housing
• Ball bearing motor
• Double insulated construction
• Thermal overload protection

Designed for years of dependable operation.

Flexible Installation

Suitable for:

• Wall mounting
• Ceiling mounting
• Panel mounting

Compatible with standard:

100mm (4") ducting

Ideal Applications

• Bathrooms
• En Suites
• Shower Rooms
• Cloakrooms
• Utility Rooms
• WC Ventilation
• Residential Properties
• Apartments
• Renovation Projects
• New Build Homes

Why Choose the EnviroVent CLAS100XHT?

The EnviroVent CLAS100XHT combines intelligent humidity sensing, an adjustable timer and an automatic shutter in one compact extractor fan. Its quiet operation, reliable ball bearing motor and IP44-rated construction make it an excellent choice for homeowners and installers seeking effective, low-maintenance bathroom ventilation.