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Type Index number Status
Centralised MEV and MVHR systems 500273 Normal
Brand Model name Model qualifier
Vent Axia Astra
     
System type balanced whole-house mechanical ventilation with heat recovery
Duct type rigid  
Minimum duct size 125 mm diameter or 204 x 60 rectangular or larger
Original manufacturer name Vent Axia Ltd
Current manufacturer name Vent Axia Ltd
Manufacturer address Fleming Way
Crawley
West Sussex
RH10 9YX
Manufacturer phone 01293 441535
Manufacturer website www.vent-axia.co.uk
First year of manufacture 2011  
Final year of manufacture current  
Summer bypass no  
Integrated to exhaust air heat pump No  
Entry updated 11/11/2015 10:34  

 

K+n wet rooms SFP (W/l/s) [2009] Efficiency (%) [2009] SFP (W/l/s) [2012] Efficiency (%) [2012]
n = 1 0.61 91% 0.67 90%
n = 2 0.65 90% 0.85 90%
n = 3 0.76 89% 1.09 87%
n = 4 0.94 88% 1.36 86%
n = 5 1.11 87% - -

In-use factors

In-use factors are shown as multiplying factors for SFP or MVHR efficiency

Default In-use Factors

  SFP SFP SFP Efficiency Efficiency Last updated
  Flexible duct Rigid duct No duct Uninsulated duct Insulated duct  
MEV centralised 1.70 1.40       16/12/2011 08:02
MEV decentralised 1.45 1.30 1.15     12/05/2007 09:52
MVHR 1.70 1.40   0.70 0.85 16/12/2011 08:02
Default 2.50 2.50 2.50 0.70 0.70 15/10/2007 12:16

 

Approved Installation Scheme In-use factors

  SFP SFP SFP Efficiency Efficiency Last updated
  Flexible duct Rigid duct No duct Uninsulated duct Insulated duct  
MEV centralised 1.60 1.30       16/12/2011 08:02
MEV decentralised 1.45 1.30 1.15     12/05/2007 09:52
MVHR 1.60 1.25   0.70 0.85 16/12/2011 08:02
Default 2.50 2.50 2.50 0.70 0.70 15/10/2007 12:16

 

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