National Ventilation UMD100T White In-Line Mixed Flow Extractor Fan at Discount Electrical for £30.50 - HotUKDeals
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gap30 Avatar
2m, 1w agoFound 2 months, 1 week ago
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#1
How difficult is it to swop over a 4" manrose ceiling fan 23l per sec over to this bad boy?
#2
Typey1
How difficult is it to swop over a 4" manrose ceiling fan 23l per sec over to this bad boy?

not hard, just put this in the loft and buy some duct and grill vents

http://www.toolstation.com/shop/Electrical/d190/Fans/sd280/PVC+Flexible+Ducting/p32740

http://www.toolstation.com/shop/Electrical/d190/Vents+%26+Grilles/sd3148/Round+Ducting+Louvred+Grille+154+x+154mm/p95425
#3
gap30
Typey1
How difficult is it to swop over a 4" manrose ceiling fan 23l per sec over to this bad boy?
not hard, just put this in the loft and buy some duct and grill ventshttp://www.toolstation.com/shop/Electrical/d190/Fans/sd280/PVC+Flexible+Ducting/p32740http://www.toolstation.com/shop/Electrical/d190/Vents+%26+Grilles/sd3148/Round+Ducting+Louvred+Grille+154+x+154mm/p95425
So fix the unit above existing fan with a bit of framework then attach the ducting? Thanks
2 Likes #4
Typey1
gap30
Typey1
How difficult is it to swop over a 4" manrose ceiling fan 23l per sec over to this bad boy?
not hard, just put this in the loft and buy some duct and grill ventshttp://www.toolstation.com/shop/Electrical/d190/Fans/sd280/PVC+Flexible+Ducting/p32740http://www.toolstation.com/shop/Electrical/d190/Vents+%26+Grilles/sd3148/Round+Ducting+Louvred+Grille+154+x+154mm/p95425
So fix the unit above existing fan with a bit of framework then attach the ducting? Thanks

take the existing fan out and fit a vent where the hole is and attach the new fan inline ie with the ducting and vent out to wherever
#5
Typey1
gap30
Typey1
How difficult is it to swop over a 4" manrose ceiling fan 23l per sec over to this bad boy?
not hard, just put this in the loft and buy some duct and grill ventshttp://www.toolstation.com/shop/Electrical/d190/Fans/sd280/PVC+Flexible+Ducting/p32740http://www.toolstation.com/shop/Electrical/d190/Vents+%26+Grilles/sd3148/Round+Ducting+Louvred+Grille+154+x+154mm/p95425
So fix the unit above existing fan with a bit of framework then attach the ducting? Thanks


If it will be in an uninsulated roof space, I'd use thermally insulated ducting plus a condensation trap if there is likely to be a lot of moisture in the extracted air, to prevent water condensing in the fan or dripping out of the ceiling vent. The condensation traps needs lots of tape as they are made to fit soil pipe rather than ducting.
#6
Fitted two last year to replace our ceiling fans in our shower room and bathroom, the difference is amazing. No more condensation in the rooms. I just lagged the ducting with loft insulation and that works ok, but will be fitting proper insulated ducting before the end of the summer.
Wish I'd installed these years ago instead of replacing the ceiling fans every couple of years.
#7
melted
Typey1
gap30
Typey1
How difficult is it to swop over a 4" manrose ceiling fan 23l per sec over to this bad boy?
not hard, just put this in the loft and buy some duct and grill ventshttp://www.toolstation.com/shop/Electrical/d190/Fans/sd280/PVC+Flexible+Ducting/p32740http://www.toolstation.com/shop/Electrical/d190/Vents+%26+Grilles/sd3148/Round+Ducting+Louvred+Grille+154+x+154mm/p95425
So fix the unit above existing fan with a bit of framework then attach the ducting? Thanks
If it will be in an uninsulated roof space, I'd use thermally insulated ducting plus a condensation trap if there is likely to be a lot of moisture in the extracted air, to prevent water condensing in the fan or dripping out of the ceiling vent. The condensation traps needs lots of tape as they are made to fit soil pipe rather than ducting.

Whilst I agree with your comment

I have never done this or had the condensation problem

And I fit 12 inch fans this is a baby fan for showers ( in most cases domestically )

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