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Airflow DV400 DIY Kit

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Airflow DV400 DIY Kit
Price From:
£2,611.20 including VAT Excluding VAT £2,176.00

  • High Quality Unit from Airflow 

  • Automatic Boost Function for efficient vent usage 

  • Comes with additional products and accessories for DIY Kit

  • Up to 90% Heat Recovery 

If you require a higher point kit than is provided, please contact us via Phone or Email.

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Price From:
£2,611.20 including VAT Excluding VAT £2,176.00


Airflow DV400 Heat Recovery Kit 

Complete DIY Kit of a Airflow DV400 MVHR unit and comes in Radial Ducting (Recommended), Solid Rigid PVC, Galvanised Steel Ducting.

Our Comprehensive DIY Kits have everything you should require to install a top-quality Heat recovery system to building control regulations  

This kit can be provided from a 8 Point Kit to a 12 Point Kit. (Inquire about other sizes for this kit through Phone or Email) 

Main Kit Features:

  • Top of the range Airflow DV400 heat recovery unit with every feature imaginable and proven reliability from the leading ventilation company, you'll have total peace of mind when buying this outstanding heat recovery unit. 
  • Kits can be bought with the option of 3 different types of ducting, Radial, Solid rigid PVC, or Galvanised Steel Ducting. All ducting types will provide a quiet and efficient system that is suitable for any competent or trades-person to easily install  
  • All products in kits can be changed to suit your specific needs
  • Free delivery to UK Mainland or Ireland address, Worldwide Delivery is available 
  • Free Technical support by our in-house technical team (multiple telephone lines)
  • Free design service, Our In-house designers can provide a easy to follow plan to building control standards with required air flow rates
  • Commissioning, We have a network of commissioning engineers or we can supply you with a DIY airmeter including a commissioning guide 
  • Installation, The systems are suitable for any competent person to install but we also have a large network of installers if required throughout the Uk and Ireland if required
  • 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

Airflow DV400 Heat Recovery Unit - 90000399

The Duplexvent DV400 are highly efficient, side entry mechanical supply and extract ventilation units with heat recovery for an air capacity of up to 400 m3/hr.

Suitable for properties of up to 240 m2

The unit casing is made of high density EPP material which provides significant insulation, eliminates any thermal bridging.

The units include an easily removable, plastic heat exchanger which transfers warmth from the outgoing waste air stream into the incoming fresh air where its thermal efficiency exceeds 90%. At no point do the air streams mix.

Having the latest, low energy EC fan technology, the DV400 comply with the ErP 2015 standards and are tested by TUV laboratories

Key Features

  • Up to 90% Heat recovery
  • Counter flow heat exchanger (pvc)
  • Max Air flow 425 m3/h
  • 400 m3/h @100pa
  • Suitable for houses with Max floor area of  240m2
  • Sound level 36 to 46 @3m db(a)
  • Dimensions LxDxH (mm) 850 x 280 x 820
  • Duct diameter 4x160mm
  • Weight 21kg
  • Wall or floor mounted
  • Filtration 2x G4 
  • Frost protection  
  • 100%  Adjustable air flow rates by LED controller
  • 2 year warranty- Fans 1 year
  • TUV tested (german standard)
  • Construction -EPP 
  • 100% Summer By-Pass

100% Automatic Bypass

The units are equipped with an automatic, 100% bypass which totally isolates the heat exchanger so that no air passes through it. This provides effective cooling in the summer season.

Mounting Positions

Unique to these side entry units is the ability to install the same unit at:

  • Wall / Floor - standing position
  • Ceiling - flat position (with inclination for drainage)
  • Floor - flat position (with inclination for drainage) This provides exceptional flexibility in product specification, installation and storage.


Simple control incorporates the following features:

  •  Variable speed control 100% adjustable by the user
  • Automatic boost function increases air flow when needed (via volt-free contact or 0-10V sensor output)
  • Automatic frost protection reduces the supply ventilation rate for a certain period to prevent ice build-up within the heat recovery cell depending on the outside air temperatu Automatic summer bypass provides free cooling in the summer season. Its motorised damper is triggered by the temperature sensor automatically
  • Heater control for frost heater and post-heater

BPC Ventilation are leading designers and distributors of Quality home ventilation solutions and provide full technical and customer support throughout the UK and Europe

We can also design a bespoke solution if you send us a set of plans in any format to info@bpcventilation.com

Benefits of working with BPC Ventilation

  • In-House design service
  • Largest range of heat recovery systems
  • Technical support including Live chat
  • Specialists in easy to install DIY systems
  • All products in stock in our own warehouse
  • Large Showroom with working units on display
  • Free Delivery to any Uk Mainland or Ireland Location
  • Delivery also available to any worldwide location  
  • Installer network throughout the UK and Ireland
  • Authorised suppliers and distributors for all products
  • All systems comply to all the latest building control regulations
Technical Specification

Technical Specification tab

Technical Specification for Radial Ductings 


DescriptionPart No6pt7pt8pt9pt10pt11pt12pt13pt14pt15pt16pt17pt
125mm Airflow pvc extract valve90000340333445556677
125mm Airflow pvc supply valve900003393455667889910
150mm pipework x 1 meterP150-1888888888888
150mm pipe connectorC150444444444444
150mm 90' bendsB90150101010101010101010101010
Silencer 150 x600ASM150600111111111111
Metre foil backed glass fibre insulationINS22444444444444
150mm exterior grille S/steel louvered CowlSSC150222222222222
10m roll 150mm insulated flexible ductingIFD150111111111111
Roll silver foil tapeST50222222222222
Roll builders strap 10 meterBS50222222222222
Sealant - grey ductSE380111111111111
Jubilee clip 100-170mm (Pack of 10)JC160111111111111
2 meter Overflow pipe with 5 bendsOP22111111111111
75mm x 50 Metre Radial pipe (Quiet-Vent Red)QV75PR222334445566
90` plenum round pipe  (Quiet-vent)QVPLEN9067891011121314151617
sealing ring (pack of 10)QV75SR222222233333
10 Pt Distribution box 160 center spigotQV16064MC2222222     
14 Pt Distribution box 160 center spigotQV160104MC       22222
Adaptor for Distribution box 160-150ADP160150222222222222

Technical Specification for Solid Rigid PVC Ducting 

DescriptionPart No8pt9pt10pt11pt12pt13pt
125mm metal extract valveMW1248910111213
125mm pipework x 1 meterP125-1607070808090
125mm pipe connectorC125151717202022
125mm 90' bendsB90125151719212224
125mm T pieceT125455667
150mm pipework x 1 meterP150-1202030304040
150mm pipe connectorC15055771010
150mm 90' bendsB90150101010111213
150mm T pieceT150223344
150mm to 125mm reducerR150125566778
Silencer 150 x600ASM150600222222
Metre foil backed glass fibre insulationINS22404550556065
150mm exterior grille S/steel louvered CowlSSC150222222
10m roll 150mm insulated flexible ductingIFD150111111
Roll silver foil tapeST50445566
Roll builders strap 10 meterBS50222333
Sealant - grey ductSE380223344
Jubilee clip 100-170mm (Pack of 10)JC160111111


Download Documentation
Radial Ducting