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Vent Axia Lo-Carbon Multivent MVDC-MS Kit

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Vent Axia Lo-Carbon Multivent MVDC-MS Kit
Inc Vat £282.00 Excluding VAT £235.00
Vent Axia Multivent MVDC-MS Kit - VMSMEVPK
£0.00 including VAT Excluding VAT £0.00


Vent Axia Lo-Carbon Multivent MVDC-MS Kit - VMSMEVPK

The Multivent continuous mechanical extract ventilation range is designed for the simultaneous extraction of up to several bathrooms/ Wet Rooms to a centrally positioned unit normally installed in the attic space

Complete DIY Kit of a Vent Axia MVDS-MS multiple room extraction unit with insulated Flexible Ducting and fittings suitable for extraction of 7 separate areas

Our Comprehensive Diy Kits have everything you should require to install the system to building control regulations  

Please note - 

You can purchase the unit with or without the ductwork on this listing and the Unit and room ducting kits include the unit

This kit can amended if required (please contact us)

Main Features

    • Vent Axia MVDC-MS multi room extraction unit
    • installation kit
    • Free Technical support by our inhouse technical team (multiple telephone lines)
    • Kits and products are in stock ready for delivery
    • Any products not required can be returned for full refund (excluding return delivery cost)
    • Any extra products required will be discounted to the Kit Price (excluding delivery)
    • Price Guarantee - We will guarantee the lowest cost for this top quality system

Vent Axia Lo-Carbon Multivent MVDC-MS unit - 437634

With a DC motor the Multispeed Multivent is one of the most efficient central extract units in the UK. The Multivent MVDC MS offers the option of ‘Close Control’ both in the residential and the commercial sectors . 

Extended guarantee to 5 years is offered on the MVDC LoWatt energy saving motor.

Please note 

You can purchase the MEV unit with or without the ductwork on this listing and the Unit and room ducting kits include the MEV unit


  • Variable speed settings
  • Max Airflow of 350m3/h
  • Best in class Specific Fan Power (SFP) as low as 0.15 wls
  • Dimensions (mm) 340 long x 310 wide x 249 high
  • Ultra quiet - acoustically lined for low noise levels
  • Fitted with four extract 125 or 100mm diameter spigots allowing quick connection to ducts
  • Recognised in SAP Appendix Q
  • Complies with Building ADF (System 3)
  • Option of wall, ceiling and loft mounting
  • Improved controllability
  • Switched Live Boost connection
  • Fully variable normal and boost speeds
  • Fully serviceable unit with all parts accessible
  • 2 year standard or optional 5-year parts warranty: 



The potentiometer controlled speed selector allows accurate setting of airflow

The unit has 2 fully variable speeds for trickle and boost, with an inbuilt humidistat activation for the boost speed.

A switched live (LS) can also be used to select boost speed when wired through an Isolator Relay (Part No. 442030 - not supplied).

An additional third speed (purge) is available using a second switched live connection.


PVC outer casing with an acoustic lining is included as standard, ensuring minimum noise levels.


The unit has Long life, low energy multispeed DC motor


ceiling, wall or floor Installation is recommended 



Benefits of working with BPC Ventilation

  • Authorised Vent Axia distributors
  • In-House design service
  • In-House Technical support
  • Specialists in easy to install DIY systems
  • 1000s of products in stock in our own warehouse
  • Large showroom with working units on display
  • Installer network throughout the UK and Ireland
  • All systems comply to all the latest building control regulations 
  • 0% Finance available 




Ducting Kits

Ducting kits

Vent Axia Multivent MVDC-MS Kit - VMSMEVPK

List of Products in Kit

part numberDescription2 point kit3 point kit4 point kit5 point kit
437634Multivent MVDC-MS1111
MW124125mm Metal extract valve3345
C125125mm pipe connector 1 2 3 4
GPVC125W125mm PVC external grille (white) 1 1 1 1
IFD125125mm Insulated flexible ducting X 10 Meter 1 2 2 3
ST75Roll 75mm x 10m silver foil tape  1 1 1 1
JC160Jubilee clip 100-150mm (pack 10) 1 1 12
T125125mm T piece0012

Technical Specification

Technical Specification

Tectical Info on the MVDC-MS 

Dimensions (mm)

A      B      C     D     E     F      G     H     I    J   



Further Information

Further Information

Passivent house


(MEV) systems provide continuous ventilation from up to 7 batrooms .

Centralised mechanical extract systems (c-MEV) also known as a Multipoint and Central Extract System draw moisture-laden air from multiple wet rooms of a property, Essentially the concept is to provide simultaneous, low level extraction from kitchens, bathrooms, shower rooms, utility rooms and toilets to a central extract fan typically located in a loft space or hallway cupboard via a system of ductwork and grilles to control humidity levels.. The extracted air is then normally discharged to outside via a single duct and grille/cowl.

Decentralised mechanical extract fan (d-MEV) also known as a continious running fan is perfect for single applications such as bathroom, kitchens or utility rooms if a (c-MEV) is not suitable

As this type of system has to work 24 hours a day, 7 days a week, 365 days a year, low noise levels and reliability are critical.

Our MEV systems are cost-effective and offer many benefits to home-owners:

  • Elimination of condensation dampness

  • Healthier living environment

  • Removal of musty odours

  • Low running costs and low-energy operation

  • Easy installation and low maintenance

MEV Suitable Applications:

  • Ideal apartment ventilation solution where there is possibly only one external wall.

  • Homes with more than one wet room.

Building Control System 3

Building Regulation  Part F - System 3 covers continuous mechanical extract ventilation (MEV). This can be either a whole house centralised MEV system, or localised decentralised MEV fan.

Current Building regulation requires such systems be designed to provide background extraction at a rate equating to approximately 0.3 to 0.5 air changes per hour or individual room rates of 13 kitchen,and 8l/s for bathrooms (whatever higher is used) with the ability to boost by approx  25% for times when increased ventilation is required e.g. during cooking.

Replacement air is normally able to be provided via structural air leakage with older buildings above 5ma@50Pa or if  the home is built to good airtight standards with background ventilation openings like trickle vents and wall vent having a minimum equivalent area of 2500 mm2 should be fitted in each room, except wet rooms, from which air is extracted 

Always refer to your local building contro regulations as this information can change.


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