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Polypipe Silavent HRX-D DIY Kit

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Polypipe Silavent HRX-D DIY Kit
Price From:
£1,542.00 including VAT Excluding VAT £1,285.00

  • Up to 88% Heat Recovery 

  • EPP construction for good thermal efficiency

  • Multiple Control Options 

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


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Price From:
£1,542.00 including VAT Excluding VAT £1,285.00


Polypipe Silavent HRX-D Kit

Complete DIY Kit of a Polypipe Silavent HRX-D MVHR unit and comes in Radial Ducting (Recommended), Solid Rigid PVC, Flexible 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 4 Point Kit to a 7 Point Kit. (Inquire about other sizes for this kit through Phone or Email) 

Main Kit Features:

  • High quality and cost efficient Heat recovery unit from Polypipe that has Summer Bypass, and fully adjustable air flow rates, Ideal for developers and home builders requiring a quality unit at an economical cost

  • Kits can be bought with the option of 3 different types of ducting, Radial, Solid rigid PVC, or Flexible 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

Polypipe Silavent HRX-D Unit

Cost efficient Heat recovery unit from Silavent with Summer By-pass with a 2 year warranty

Ideal for developers and home builders requiring a quality unit at economical cost 

  • Up to 88% Heat recovery
  • 235 m3/h @100pa suitable for houses with Max floor area of 150m2
  • Specific fan power as low as 0.63 wls
  • EPP construction for good thermal efficiency
  • EC motors
  • 100% Summer Bypass  
  • 100% Adjustable air flow rates via proto meter
  • 2 x G3 Filters
  • 35 Max sound db(a) @ 3m 
  • 11.5 Kg Weight
  • Dimensions LWH 564-290-775
  • 125mm duct size
  • Multiple control options
  • SAP Appendix Q listed
  • left or right hand orientation possible
  • external wiring for easy install
  • 2 year warranty
  • Developed and manufactured in the UK

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:

Flexible Ducting Kits -


DescriptionPart No2pt3pt4pt5pt6pt7pt
125mm PVC valveAV125234567
125mm pipework x 1 meterP125-1111111
125mm pipe connectorC125 23456
125mm 90' bendsB90125      
125mm T pieceT125 12345
125mm pvc grilleGPVCW222222
10m roll 125mm insulated flexible ductingIFD1252034567
Roll silver foil tapeST50111122
Jubilee clip 100-170mm (Pack of 10)JC160      
Cable ties x 550mm (pack 10)CT550222233

Solid Rigid Ducting Kits -


DescriptionPart No2pt3pt4pt5pt6pt7pt
125mm metal extract valveMW124234567
125mm pipework x 1 meterP125-1203040506070
125mm pipe connectorC12581216202428
125mm 90' bendsB90125151719212224
125mm T pieceT125 12345
Silencer 125 x600ASM125600222222
Metre foil backed glass fibre insulationINS22101520253035
125mm exterior grille S/steel louvered CowlSSC125222222
10m roll 125mm insulated flexible ductingIFD125111111
Roll silver foil tapeST50122334
Roll builders strap 10 meterBS50222333
Sealant - grey ductSE380223344
Jubilee clip 100-170mm (Pack of 10)JC160111111

Radial Ducting Kits -

DescriptionPart No4 pt5pt6pt7pt8pt9pt10pt
125mm Airflow pvc extract valve900003402233445
125mm Airflow pvc supply valve900003392334455
125mm pipework x 1 meterP125-16666666
125mm pipe connectorC1252222222
125mm 90' bendsB9012510101010101010
150mm to 125mm reducer pvcR150125P    222
Silencer 125 x600ASM1256001111111
Metre foil backed glass fibre insulationINS223333333
125mm exterior grille S/steel louvered CowlSSC1252222222
10m roll 125mm insulated flexible ductingIFD1251111111
Roll silver foil tapeST501111111
Roll builders strap 10 meterBS501111111
Sealant - grey ductSE3801111111
Jubilee clip 100-170mm (Pack of 10)JC1601111111
2 meter Overflow pipe with 5 bendsOP221111111
75mm x 50 Metre Radial pipe (Quiet-Vent Red)QV75PR1112233
90` plenum round pipe  (Quiet-vent)QVPLEN9045678910
sealing ring (pack of 10)90411331122222
6 Pt Distribution box 125 center spigotQV12560MC2222   
10 Pt Distribution box 160 center spigotQV16064MC    222
Adaptor for Distribution box 160-150ADP160150    222


Download Documentation
Flexi Ducting
Radial Ducting