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hey, so im a DIYer and learn most stuff from youtube tutorials. At the moment am doing a bathroom renewal, and want to replace the extractor fan for a stronger one. I've a very basic understanding of house wiring and electricity, however i think i could do something straightforward like replacing an extractor fan, if i know follow the instructions.

My worries are getting the right power rating fan, so could you guys give me some advice on this?
 
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Wilko

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Hi Fatah and Welcome to the Forum!
Can you tell us what fan you’ve got now? (perhaps upload a pic).
 

Midwest

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Arms
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In my experience, unless your running a rain shower, a Turkish steam room in your bathroom or have a really large bathroom, most of the typical bathroom fans you can buy will suffice.

Where they struggle, is too long or complicated ducting and vent to outside in the wrong place.
 
B

Bobster

An make sure enough free air can be pulled into the room to replace what is being extracted.

A small gap under the door will usually be sufficient.
 
O

Octopus

Why do you think you need a "stronger" fan?

Do you leave the window open too?
Do you have lots of condensation/mould in the room?
Does your existing fan actually "draw" air into it?
Can you feel air exiting from the vent with the fan on?
Is the gap under the door big enough to draw enough air into the room?
Does your existing fan continue to run after the the light is turned off?
 

telectrix

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Mentor
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rule 1..... isolate supply at CU and test for dead.
rule 2.... take a photo of connections before you start.
rule 3 ..... panic.
 

Tony Reidy

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Arms
hey, so im a DIYer and learn most stuff from youtube tutorials. At the moment am doing a bathroom renewal, and want to replace the extractor fan for a stronger one. I've a very basic understanding of house wiring and electricity, however i think i could do something straightforward like replacing an extractor fan, if i know follow the instructions.

My worries are getting the right power rating fan, so could you guys give me some advice on this?
hey, so im a DIYer and learn most stuff from youtube tutorials. At the moment am doing a bathroom renewal, and want to replace the extractor fan for a stronger one. I've a very basic understanding of house wiring and electricity, however i think i could do something straightforward like replacing an extractor fan, if i know follow the instructions.

My worries are getting the right power rating fan, so could you guys give me some advice on this?
hey, so im a DIYer and learn most stuff from youtube tutorials. At the moment am doing a bathroom renewal, and want to replace the extractor fan for a stronger one. I've a very basic understanding of house wiring and electricity, however i think i could do something straightforward like replacing an extractor fan, if i know follow the instructions.

My worries are getting the right power rating fan, so could you guys give me some advice on this?
Most fans have around the same output if they are on an external wall and should be set to run on for 20 minutes to change the air in an average room, if its in ducting then you should use a centrifugal fan
 
  • Thread Starter Thread Starter
  • #10
Hi Fatah and Welcome to the Forum!
Can you tell us what fan you’ve got now? (perhaps upload a pic).
i live in a council house, so they dont replace anything until its broken, even if its degraded or barely functioning. we've temporarily attached a corded fan onto the existing fan, so its hard to see it, but definitely a cheap and old type.

IMG_20190527_223746.jpg

IMG_20190527_223803.jpg
 
  • Thread Starter Thread Starter
  • #11
In my experience, unless your running a rain shower, a Turkish steam room in your bathroom or have a really large bathroom, most of the typical bathroom fans you can buy will suffice.

Where they struggle, is too long or complicated ducting and vent to outside in the wrong place.
hi, my bathroom is roughly 2.5 x 2.5 meters, however;
-it doesnt have a window
-the door is usually closed at all times
-people take lo~ng showers
-decorator (my brother) decided to use wallpaper everywhere(including the ceiling)

and the current fan is barely functional :p
 
  • Thread Starter Thread Starter
  • #12
An make sure enough free air can be pulled into the room to replace what is being extracted.

A small gap under the door will usually be sufficient.
i'll try and see if we can have the door moved upwards slightly, great tip!
 
  • Thread Starter Thread Starter
  • #13
Why do you think you need a "stronger" fan?

Do you leave the window open too?
Do you have lots of condensation/mould in the room?
Does your existing fan actually "draw" air into it?
Can you feel air exiting from the vent with the fan on?
Is the gap under the door big enough to draw enough air into the room?
Does your existing fan continue to run after the the light is turned off?
i think i need a stronger fan because;
-there's no window in the bathroom
-people take long showers, so lots of steam
-the existing fan is barely functioning
-i'm thinking to move the door upwards because current gap is small
-current fan keeps spinning after light is off
here's a some visuals bathroom - https://Upload the image directly to the thread.com/a/RQkEV7c
thanks}
 
  • Thread Starter Thread Starter
  • #14
rule 1..... isolate supply at CU and test for dead.
rule 2.... take a photo of connections before you start.
rule 3 ..... panic.
cmon i wouldn't mind doing that, only problem is that some fan have different amp and volts and i'm not confident about that stuff~
 

AJshep

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Arms
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Advent Win
That fan you had was not a cheap fan it is a Greenwood Airvac CV2gip. They are known as continuous extractor fans, it should have been commissioned on install and flow rates set up for low speed and boost, these all have humidity and timer overrun options built in if a switch wire from the light has bern used.

If you do the calculations as per Part F in most modern propertys a standard intermittent extractor fan will not comply unless you have enough background ventilation and single glazing.

See the video below but I would select both humidity and Timer overrun options

 
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