Infinity NB / Filterless-NB

Filterless WC, Bathroom & Kitchen Extractor Fan

EnviroVent’s Filterless Extract Fans are the only fans with patented Cyclone Technology (No. 0402041.8). This ensures that all particles, humidity and dust in the air are drawn into the fan and extracted outside the property, without the need for filters that can become clogged. This enables the fan to deliver the maximum of performance to control moisture and humidity using the lowest energy consumption.


EnviroVent has been continuously refining its Filterless Extract Technology since inventing it 15 years ago. Which has reduced social housing landlord’s extractor fan maintenance costs by tens of millions of pounds. The Infinity-NB and Filterless-NB model has been specifically designed and future-proofed to meet the requirements for social housing newbuild homes as whole-dwelling ventilation rates increase

Key Features

  • Patented cyclone technology
    Patented cyclone technology

    For maximum performance to control moisture and humidity.

  • Exchangeable cartridge system
    Exchangeable cartridge system

    Provides the lowest ever lifecycle costs to save housing providers millions of pounds in maintenance and replacement costs: should never end up on a landfill site.

  • Ultra low energy consumption
    Ultra low energy consumption

    Long trouble free life, less costs

  • Pullcord or wireless boost switch option
    Pullcord or wireless boost switch option

    Can be switched to boost mode with the use of a pullcord or optional wireless boost switch.

  • 5 Year Warranty (Filterless-NB)
    5 Year Warranty (Filterless-NB)

    High quality products for peace of mind, saving time, money and hassle.

  • Made In The UK
    Made In The UK

    Supporting our local economy, lowering the carbon footprint.


    Protection against low pressure jets of water from all practicable directions

  • Removable impeller. No filter.
    Removable impeller. No filter.

    For hassle-free, rapid and safe cleaning.

  • Future-Proofed to Comply
    Future-Proofed to Comply

    Meets the airflow requirements of a typical new build dwelling

  • Quiet running
    Quiet running

    Eliminates one of the biggest complaints about noisy fans

  • 7 Year Warranty (Infinity-NB)
    7 Year Warranty (Infinity-NB)

    High quality products for peace of mind, saving time, money and hassle.

  • Intellitrac<sup>®</sup> Technology
    Intellitrac® Technology

    Incorporates Intellitrac® unique humidity tracking.

  • IPX4

    Protection against splashing and spraying water from all practicable directions.


Future Proofed to Comply

There is nothing more frustrating than finding out that a fan that does not comply to the airflow rates when installed. With whole-building ventilation rates expected to increase, the Infinity NB and Filterless NB has been designed to meet the requirements of a typical new build installation.

Intellitrac® Vapour Tracking

Running continuously on trickle, the Infinity NB and Filterless NB ensures that condensation and high humidity levels are kept at bay. No user intervention is required as the intelligent vapour tracking controls constantly monitor the humidity level. 

As this rises and falls, the motor speed rises and falls in direct correlation. This controls condensation both quietly and efficiently, eliminating the problem of noisy extract fans and reducing the periods of time when the fan operates on maximum speed, saving energy.

One Fan Fits All

The Infinity-NB and Filterless-NB is ideal for WC, bathroom, kitchen and utility room installations, delivering high performance extract ventilation to meet the building regulations and beyond. 

From simple through the wall installations, window and ceiling installations, the Infinity-NB and Filterless-NB fan fits all with the use of easy to install accessory kits.


Guaranteed to last longer than any other fan with an incredible 7 year (Infinity-NB) and 5 year (Filterless-NB) no quibble, maintenance-free warranty, the Infinity NB offers the lowest life-cycle costs on the market.


The Infinity NB and Filterless NB has also been designed for the easiest installation ever with power cable entry accessible through all points of the compass, Simple selection switches for commissioning, An IPX4 sealed chamber housing all electronics and the SELV version is supplied with a power supply unit incorporating a fixed fuse spur.

Usage Meter as Standard

This is built into the central cartridge as standard to enable landlords to monitor operational life.

Product Codes
230V version with intellitrac® and pullcord
230V version with intellitrac® and wireless boost switch
SELV version with intellitrac® and pullcord
SELV version with intellitrac® and wireless boost switch
Wall kit
Ceiling mounting kit
230V window kit
SELV window kit
Product Specification

Performance Curve - EF/INF-NB 230V

Performance Curve - EF/INF-NB SELV

Airflow Performance

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