Hello all
Opened the cover of an old extractor fan as I had a feeling it was full of dust and needed a clean out. I had a suspicion it may not be performing as it should as it has never been cleaned out in its life. Upon opening the unit, it was indeed full of dust.
It is an old (circa 1970s) nuair centrifugal fan. It is very quiet and seems to perform OK, although I have no airflow figures for it.
According to my calculations the bathroom should use a fan that moves 77m3/hr. I have no idea if this fan achieves this.
It is however powered by the light switch only, and whilst hoovering inside I could see it only had three connections, switched live (I assume), neutral, earth.
Does this mean, without a rewire, I cannot replace it with either a timed and/or humidistat model as I can see no permanent live?
The bathroom has no window so the fan is quite important. While the bathroom does not suffer from any mould, a timed and/or humidistat model may be an improvement in this situation.
In the mean time the clean out should have, at least, helped performance.
As a caveat, I would not be replacing the fan myself, I just wanted to know what is possible based on the current wiring set-up.
Opened the cover of an old extractor fan as I had a feeling it was full of dust and needed a clean out. I had a suspicion it may not be performing as it should as it has never been cleaned out in its life. Upon opening the unit, it was indeed full of dust.
It is an old (circa 1970s) nuair centrifugal fan. It is very quiet and seems to perform OK, although I have no airflow figures for it.
According to my calculations the bathroom should use a fan that moves 77m3/hr. I have no idea if this fan achieves this.
It is however powered by the light switch only, and whilst hoovering inside I could see it only had three connections, switched live (I assume), neutral, earth.
Does this mean, without a rewire, I cannot replace it with either a timed and/or humidistat model as I can see no permanent live?
The bathroom has no window so the fan is quite important. While the bathroom does not suffer from any mould, a timed and/or humidistat model may be an improvement in this situation.
In the mean time the clean out should have, at least, helped performance.
As a caveat, I would not be replacing the fan myself, I just wanted to know what is possible based on the current wiring set-up.
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