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Xpelair Simply Silent CV4SR Extract Fan

£123.60 £103.00
In stock
Delivery Time:
4-6 Weeks Delivery
5 Years
Quick Code:
Order Line:
01977 663331
  • Very low noise level: 28 dBA at 3m
  • Timer adjustable 30 sec - 30 minutes
  • Automatically adjusts the speed of the fan
  • Flow straighteners guide air through ducting which reduces turbulence

Xpelair Simply Silent CV4SR Extract Fan

Maintains a constant volume of extracted air ideal for south westerly facing installations

A unique sensor is located in the duct airflow and is continuously calculating and recording the flow rate, taking hundreds of measurements each second.

When the technology senses consistent changes in airflow, brought about by reduced ducting efficiency or a strong wind applying back pressure in the duct, it adapts the fan intuitively to maintain a constant volume of extracted air.

Intelligent Adaptiflow Sensing works cooperatively with the products active humidistat.

This means that when the humidity increases rapidly, or reaches the fans pre-set humidity level then the required flow rate increases.

The sensor will reflect this in the information it is sending to the fans high speed central processor.

Delivering constant volume performance is that the home-owner can be assured that the desired airflow is achieved for the lifetime of the product.

Please see attached download for ventilation for domestic bathrooms, shower cubicles, toilets, utility rooms and kitchens - Includes both round and square facias. 

  • Humidistat: Operated by built-in humidity sensor adjustable from 50-90% RH
  • Timer: Operated by remote switch usually a lighting circuit, timer adjustable 30 sec - 30 minutes
  • Eliminates odours and mould growth in bathrooms, shower rooms, cloakrooms and toilets
  • Operation Speeds 4 providing a constant volume extract fan with active humidistat
  • Ghost Air Movement Technology for effective near-silent control of humidity
  • Automatically adjusts the speed of the fan, ensuring the correct airflow
  • Integral hour run meter shows exactly how long the fan has been running
  • Front cover is easy to remove or replace
  • Intermittent hour-run on timer suitable for wall, ceiling, window and panel mounting
  • Flow straighteners guide air through ducting which reduces turbulence
  • A cone reduces turbulence in front of the fan and air is directed straight into the impellor
  • Ball-bearing motors suppress noise from the motor for ease of installation
  • Strengthened ducting reduces duct distortion on fitting and avoids breakage
  • Radial screw slots for easy alignment of back plate prior to final fixing
  • Features a level line at bottom of back plate for ease of alignment
  • Large cable access for ease of wiring
  • Includes both round and square facias. 
  • Easy cleaning thanks to twist and turn baffle
  • The fan is IPX4 rated not suitable for shower cubicles
  • Electrical Power Rating (W): Bathroom 1.6/1.9/2.9
  • Electrical Power Rating (W): Kitchen 1.9/2.3/2.9
  • Extract Performance (m3/h): Bathroom 18/29/65
  • Extract Performance (m3/h): Kitchen 29/47/65
  • Motor Type DC
  • Noise level: 15-28 dBA at 3m @ 18 litres per second
  • Complies with building regulations Part F and L


Product Code 078377
Electrical Power Rating (W) 1.6/1.8/2.3/2.10
Extract Performance (FID, M³/h) Max/Min18/29/47/66
Extract Performance (FID, l/s) Max/Min5/8/13/19
Extract Performance (FID, l/s) 0.32/0.24/0.18/0.16
Operation Speeds 4
UK Guarantee (Years) 2
IPX Rating 4
Humidistat YES
Trickle Facility YES
File-1436805159 (2.90 MB)
File-1436805223 (5.33 MB)
File-1436805280 (1.30 MB)

    What do i do if the fan is faulty?

    All Xpelair fans are backed up with a 2 Year Onsite Warranty. If the fan stops working within the 2 year warranty period, please contact Xpelair direct on 01733456789. They will advise you if they need to send an engineer out to repair.

    Our Delivery Charges and times are explained:


    Delivery Charges
    All deliveries have a standard charge of £7.99 + VAT up to 20kg. Where stated, certain products are delivered FREE of charge (mainland UK only*). Check the description of the desired product and if it says free delivery then you will not be charged for delivery*

    Extra Charges
    Where the weight is over 20kg we reserve the right to charge more dependent on product type and delivery postcode, our customer service team will be in touch and inform you of any extra charges before we despatch.

    Delivery Times
    All products will have a delivery time stated in their description. Next Working Day - these products will be delivered Next Working Day if ordered before 12.00, or in certain circumstances up until 4:00 pm. Please call if you require a Next Working Day and we will try our best to get it to you. Certain products will state within 48hrs, within 3 Days or within 5 days. These products will be delivered within the time stated. If you require delivery on a certain day please put this in the comments and we will aim to deliver on that day.

    Certain products such as radiators are delivered after 5 working days, when purchasing a radiator please put in the desired delivery date which is 5 working days after ordering. In some cases, stock permitting, we can get radiators out sooner. Please call or put in the customer comments if you need something urgently and we will try our best.

    Saturday Deliveries
    We can arrange for a Saturday delivery for certain products, please call 01977 663331 for more details.

    Please note: Although we will do our utmost to deliver your product in the time stated we cannot be held responsible for any unforeseen delays. Please do not book a plumber, electrician, etc until you have received the goods as we will not be held responsible for their time. Please read our terms and conditions for further details.

    additional charges may be applicable dependent on your location please double-check with our customer service team

    Our Returns Policy - Please click here!