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  • Al The Vent Axia fan won't give you the performance, so you can dismiss that one. The other 2 will give you the performance but at a cost of a high noise level with the Envirovent fan being the quietest at 36dB(A) at 3 metres compared to the Vent…
  • no problem let us know if you need anything else
  • Al Based on your info you now need around 150m/3hr of air at about 60Pa pressure loss. The best solution would be a Manrose 100T or vent Axia 100T they're both the same fans but with different branding (or something similar), run the fan at low sp…
  • Alex We would need the sizes of the bathroom and WC, and the proposed duct run including bends, it may be easier if you could send us a DM with a sketch and dimensions of what your thinking and we can take a look. As long as both Rooms remain und…
  • PPeetteerr Building regulations suggest you need 108m3/hr of ventilation based on a Utility Room if you want it to be more effective based on the size of the Room as well as the type of Room I would suggest 260m3/hr is more like the amount of venti…
  • Al That's quite a large bathroom and you need to decide if you want to meet building regulations, which states you need to move 54m3/hr or if you want the fan to actually clear the bathroom. If you go down the building regs route your 4" pipe is f…
  • Hi Could you confirm the ceiling height in the bathroom is also 11ft and could you confirm the size of the Louvre you're hoping to use
  • Edi In the first instance I would do the checks to see if the fans are actually working, if they are send a message with the fan details. You have a number of issues, issue one is the summer effect where for a few weeks in a year any indoor enviro…
  • Matt Please find info below as requested. If you advise the Fan design Duty we can forward a more accurate spectrum, but this shouldn't be far off. The silencer insertion loss is based on a 450mm dia x 1D Straight through. Hope of some help Its d…
  • Sorry I'm a little confused. Are you saying the Cooker hood rattles and this noise can be heard through the ceiling vent ? If yes I assume its the ceiling vent your covering with Cling film, if again this is yes, then this should be OK as long as th…
    in Noisy vent Comment by admin October 2017
  • We’ve found these sites that offer a simple online calculator to make life a little simpler when trying to calculate what size / airflow you need for your Toilet https://www.tlc-direct.co.uk/Technical/Ventilation/Ventilation4.html http://www.nfan.…
  • We’ve found these sites that offer a simple online calculator to make life a little simpler when trying to calculate what size / airflow you need for your Utility Room https://www.tlc-direct.co.uk/Technical/Ventilation/Ventilation4.html http://www…

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