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| Thread ID: 104925 | 2009-11-12 23:45:00 | Bathroom extractor fan question | globe (11482) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 829648 | 2009-11-12 23:45:00 | I have just had a bathroom extractor fan installed. By my clacs I needed a fan that pumped at around 90m3/hr so the one installed in rated to move 150m3/hr. After my shower this morning I noticed that the ceiling was still damp and that there were odd bits of moisture/condensation on the walls. Is this normal for the performance of an extractor fan os does it sound underpowewred ? Any experiences / advice ? cheers |
globe (11482) | ||
| 829649 | 2009-11-12 23:52:00 | Probably normal. Happens in my bathroom. Cool walls/ceiling + warm moist air will give an ammount of condensation. It will be a lot better than before the fan was installed though. | CliveM (6007) | ||
| 829650 | 2009-11-13 00:11:00 | Doesn't sound right. We recently had a bathroom makeover, including an extraction fan mounted over the shower stall (don't know the specs of the fan). The previous serious condensation problems we had have been completely eliminated in the renovated bathroom. Your problem might be caused by a non-optimum location of the fan. If moist air has to drift along the ceiling and walls before it gets picked up by the fan then there will almost certainly be a bit of condensation. |
Jayess64 (8703) | ||
| 829651 | 2009-11-13 00:11:00 | You have ample power but it will need time to run. If you had a fan fast enough to get rid of all the steam before it condensed you would find you were shivering with the cold drafts. We very rarely use our fan as even though it is low powered we dislike the noise and draft so just leave it. Checking on the bathroom later it is generally pretty dry just from the natural ventilation through the fan opening. |
Thomas01 (317) | ||
| 829652 | 2009-11-13 00:50:00 | Get a Showerdome (http://showerdome.co.nz/). I've had one for a number of years, and it does a brilliant job of keeping the moisture in the shower, rather than getting it all over the bathroom. The trick is to leave the extractor fan off while you're showering (otherwise it sucks the water vapour out through the gaps in the shower enclosure), and once you're done, turn it on just to draw out any bits of vapour in the room. | somebody (208) | ||
| 829653 | 2009-11-13 00:59:00 | I use a fan heater,which gets rid of most of moist air,via a window left ajar. Done this in new house for 5 years and no sign of anything unpleasant(mildew etc). |
Cicero (40) | ||
| 829654 | 2009-11-13 01:22:00 | Where's the replacement air coming from? You need another opening in the room (preferably far from the fan) to allow an air current to develop and take moist air with it. It might even help to leave the bathroom door slightly open (or fit a door grille). | seltsam (13470) | ||
| 829655 | 2009-11-13 02:53:00 | Where's the replacement air coming from? You need another opening in the room . I have one of those. It's called the gap at the bottom of the window. Works perfectly.:lol: |
pctek (84) | ||
| 829656 | 2009-11-14 01:04:00 | Where's the replacement air coming from? You need another opening in the room (preferably far from the fan) to allow an air current to develop and take moist air with it. It might even help to leave the bathroom door slightly open (or fit a door grille). Exactly - the easier the replacement air can come in, the better the moisture clearance. Think blacked fuel filter or vacuum cleaner |
Fishb8 (484) | ||
| 829657 | 2009-11-15 03:01:00 | The colder air in the room, the more moisture will condense from the warm moist air coming out of the shower. If you keep pumping out the warm air and replacing it with cold air, it will make heaps of condensation. If you have zero circulation in the room while the shower is on, the air will be capable of holding a fair bit of moisture. The moment the shower is off, open the highest vent and a low vent on the oppposite side of the room and the warm wet stuff will race outside to form a cloud (in winter) using moisture that didn't land on your walls etc. Haven't got a high vent opposite the door? Use a spade, tool of choice for the house renovator in a hurry. |
R2x1 (4628) | ||
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