Daily showering is a modern phenomena. Victorian houses were designed around one bath a week, with water warmed on the hearth and then shared by each member of the family in turn. Modern occupiers will struggle with mould and condensation without good ventilation.Roughly 1/2 Lt of water is released per person per day from each shower
- Only about 4% of properties, including new builds, exceed building regulations. A bathroom extractor should exceed 15 l/s. Experience shows that this is never tested and rarely achieved.
- There is a long debate over which type of extractor fan works best, so this is my opinion based on seeing thousand of properties with poorly designed, installed or maintenance fans.
- The simpler the better – less to go wrong, less expensive to replace, which typically is required for any fan about every 5 or so years.
- If you aren’t the occupier, e.g. landlord, use a continuous flow fan, such that they run quietly in the background, no risk of tenants switching them off or tapping them-up because they are too noisy.
- Make sure to keep doors closed, with a 10mm gap under the door, so that humid air goes out.
- Make sure that extractors are set up to overrun for 30 minutes, if there is no over-run, then keep the fan running by leaving the light on for 30 minutes.
- Note overrunning extractor fan and continuous bathroom extractor fans require both electrical wires to the light fitting and to the mains, so such be initially installed by an electrician.