Air circulation
How to organise air movement in a room
A fan does not cool the air, but well-aimed airflow makes the heat easier to bear. Here is how to place and set it up.
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The short answer
Stand the fan on a level floor, leave space around the grilles and aim the airflow where you sit or sleep. For one person, use a fixed direction; for several, oscillation (SWING). SF-5045W has three speeds, NORMAL, NATURAL and SLEEP modes and a timer up to 7.5 hours. A fan does not lower the room temperature — it only makes being in the room more comfortable.
How to position a fan
Aim the airflow towards where you sit, keep the air intake clear and check that the cable does not cross a walkway.
- Fixed direction
- Airflow straight at the armchair, desk or bed — for one person.
- SWING oscillation
- The head turns to cover a wider area — for several people.
- Space behind the guard
- Keep curtains and objects away so they are not drawn in.
- Cable
- Along the wall to the socket, not across a walkway.
Oscillation angles and available settings vary by model. Check your fan’s manual for the options it supports.
Settings for the situation
What to choose on SF-5045W.
Working alone at a desk
Fixed direction, speed 1–2, head at upper-body level.
Several people in the room
SWING for oscillation; speed to taste.
Going to sleep
SLEEP mode and a 0.5–7.5 hour timer.
Still hot in the airflow
A fan cannot remove heat: see the portable air conditioner guide.
NORMAL, NATURAL and SLEEP are selected with the MODE button on the remote.
Where to put it
You need a level, stable floor and clear space in front of and behind the grille: curtains, clothes and paper must not be drawn into the airflow. Do not use the fan near a bath, shower, sink or pool — the SF-5045W manual prohibits it. Run the cable along the wall, not across a walkway, so nobody trips over it.
Height and tilt
On SF-5045W the stand height is adjustable up to 128 cm and the head tilts. For a desk or armchair, lower the head to upper-body level; for a bed, aim slightly above it. After changing the tilt, check the blades do not touch the guard.
Fixed airflow or oscillation
A fixed direction suits a single desk or bed: the airflow is strongest that way. The SWING button turns oscillation on so the airflow covers a wider area, which helps when several people are in the room. Do not keep a strong airflow on one person all the time, especially someone asleep.
Speed, modes and timer
SF-5045W has three speeds and NORMAL, NATURAL and SLEEP modes, selected with the MODE button on the remote. The timer is set in 0.5-hour steps up to 7.5 hours, so the fan switches off after you fall asleep. The remote takes two AAA batteries.
Care and safety
Unplug the fan before moving it or removing the guard for cleaning. Never push fingers or objects through the guard, and keep the fan, plug and cable dry. If you hear an unusual noise, switch off immediately, unplug and contact service; a damaged cable must be replaced by the service centre only.
Airflow checklist
- A level floor and clear space in front of and behind the guard.
- Away from baths, showers, sinks and water.
- A fixed direction for one spot, SWING for several people.
- At night, SLEEP mode or a timer up to 7.5 hours.
- Unplug before cleaning or moving.
Common mistakes
- Expecting a fan to cool an empty room.
- Pushing the fan against a wall or curtains.
- Using it in a bathroom or next to a sink.
- Pushing fingers or objects through the guard.
WetAir manuals and support
Check the exact model requirements
If the fan develops vibration, noise or unstable oscillation, stop it, disconnect power and consult the manual or WetAir service.
Sources and review
Height, modes, timer, remote and safety rules come from the WetAir SF-5045W/SF-5045B manual (a scanned booklet). We did not check a separate SF-7045W manual, so its specifications are not given here.
Frequently asked questions
Can a fan lower the room temperature?
No. It moves air and makes you feel cooler, but it does not send heat outside — that needs an air conditioner.
When should I use oscillation?
When several people are in the room or you need to cover a wider area. For a single spot, a fixed direction works better.
Which mode is best at night?
SLEEP plus the timer: on SF-5045W you can set 0.5 to 7.5 hours in 0.5-hour steps.
Why has the fan become noisy?
Switch it off and unplug it. Check the blades are not touching the guard after a tilt change; if the noise remains, contact service.