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Table 1 Average fan running time: hours per day
  kitchen   bathroom  
house n° manual Humidstat manual Humidstat
1 0·14 0·02 0·06 0·14
2 0·31** 0·48 0·25** 0·25 **& 0·28
3 0·11 & 0·23 n/a 0·58 n/a
4 0·02 0·0 0·0 1·6
5 n/a* n/a* n/a* 0·1*?
6 n/a n/a & 0·24 n/a n/a & 0·08
7 n/a 0·05 & 0·03 n/a 0·44 & 0·44
8 0·50 0·35 0·32 0·76
9 0·0** 0·53 0·0** 0·04
10 n/a n/a & 1·13 n/a n/a & 0·0
11 0·21 0·29 0·0 0·0
12 0·06 0·02 0·01 n/a*
13 1·11 0·05 0·17 0·09
14 n/a* n/a* 0·0 n/a*
15 n/a 0·29 n/a 0·74
Overall mean 0·269 0·268 0·139 0·354
Notes:
* – Incomplete data owing to fan failure during period
** – Based on only one-half (no monitoring during other half)
n/a – Fan data not logged or period not monitored at all
House n° 9 failed to complete the study