I have two Whirlybird and one was not working well (only spinning with strong wind) so recently replaced one Whirlybird but it's spinning every time.
If there is no wind it stops spinning but my other one always spinning with or without wind.
My neighbour one is also always working. I asked the guy who installed it and he said it's working with the wind so if there is no wind if might not working.
Can you give me any advice?
Whirlybird is not spinning without wind. Is it normal?
BreadTwo on 21/08/2019 - 10:17
Comments
One has an issue on the side of the roof also one side blocked with the wall.
Call a priest, you have poltergeists.
oMg…Ive never thought that :(
ur welcome…
Isn't part of the operation based around temperature differences between the indoor and outdoor, to create ventilation? If so, maybe the temps are not sufficiently different to initiate the ventilation.
Yes, good call. One side of the roof may be on the south. The warm air would generate on the north side, travel up the inside of the roof to the vent on the north side. The hot air wouldn't get a chance to build up in the roof cavity to use the other vent. The other vent may come into play when it's much warmer.
Thanks :)
Lube?
It's a brand new one
Depends where it is. If it's in an area of the roof where:
- It's hotter in the roof than outside
- There's other vents to get air the roof from another place to the area where the hotter air is
- It's in a location were the hotter air builds up
Then the hot air in the roof can so 'push out' of the whirlybird making it spin. The difference between your 2 whirlybirds could be anything that affects those conditions. E.g. One side of your roof is shaded/towards the south so doesn't get as hot where the whirlybird is, or your roof is a lighter colour than your neighbours so the heat build up is slower, etc.
If you're 100% sure though it should be working the same, maybe check that new air can get into the part of the roof where the whirlybird isn't moving as much? E.g. Perhaps a vent in the lower space is blocked with insulation? As air does need to get into the roof to enable it to get back out of the roof.
Thank you! I got the point.
Hot air rising from the roof space will cause the whirlybird to turn
Thank you :)
Whirlybird is not spinning without wind. Is it normal?
I just can't…….. NEXT
blow harder
Tell wind?
Possible whirlybird bearings binding or mounted in a place where it doesn't get strong wind. Also, when fitting you need to make sure that whirlybird is level.
Thanks for the comment!
Ocker's comment is correct - I have 2 on my rooftop.
is the inside of your roof one large open cavity space?