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Replace Inline Exhaust Fan in the roof cavity

bara3
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Replace Inline Exhaust Fan in the roof cavity

I have one of these inline exhaust fans for one of our bathrooms and it is powered by a standard electrical outlet. one day we smelled a Burnt Motor smell and then noticed this was no longer working. I plugged something else into the electrical outlet and confirmed the outlet was still functioning.

 

it would appear to be a simple replacement, The most difficult part would be mounting and reattaching the duct

just wanted to ask here to see what I would need to prepare

 

I believe I have 15 CM ducts in the bathroom. I can enter the roof cavity it's a bit dark but otherwise fine.

I can see the duct going into this fan which is next to a post (red). there is a strip of metal that curves around the fan holding it up. I have not examined this closely as I was in a hurry and it was very dark

 

 

Screenshot 2026-01-12 195319.png

 

do you know why it is mounted in this fashion?

my existing fan has more of a hump in the middle not like the photo above. I don't know what the difference is but it is a mirvac home so it's probably the lowest common denominator equipment 

 

how do I choose which fan is the most suitable? It extracts into the ceiling cavity and the existing duct is there. it is a two Storey townhouse the bathroom is small and probably does not need to be super strong

 

Do all inline fans come with a standard plug you can plug into any electrical outlet?

 

EricL
Bunnings Team Member
Bunnings Team Member

Re: Replace Inline Exhaust Fan in the roof cavity

Hello @bara3 

 

In order to get a similar inline fan with more or less the same power, I suggest looking at the model tag attached to the fan. You'll see how many watts it uses, how much air it moves and how powerful it is. Make sure to take a picture of the tag so that you can compare it to the in-line fans available at the store, please make sure to check the Bunnings website as well. Please note that not all in-line fans are plug in type, it will be necessary to engage the services of an electrician if you get one that does not have a plug type end.    

 

I suggest using Kinetic 159-181mm 304 Stainless Steel Hose Clamp in combination with 3M 48mm x 18.2m Duct Tape - Yellow to see what sections you've joined up. An inline bathroom fan is purposefully hung on wires, straps, or cords to provide vibration isolation and significantly reduce noise transmission into the building structure. 

 

I suggest checking out the store's Exhaust And Heat Lamp Installation Service, especially if you are looking for a professional to install your in-line fan. My best advice is to make sure that the fan is facing in the right direction. 

 

If you need further assistance, please let us know.

 

Eric

 

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