BonzaiDuck
Lifer
I never investigated this possibility before, but my electronics technician friend in Woodbridge, VA swears that it yields vast improvements for noisy fans.
Apparently, the fan bearings can be lubricated. Again, forgive my naive enthusiasm about this, but I never considered it before.
A small pocket-knife blade can be use to lift the round manufacturer's label on the exhaust-side of the fan. Under the label, probably in dead-center, there should be a plastic or rubber seal which just lifts up with the seal -- stuck to the adhesive side.
My friend suggests that a drop or two of teflon grease significantly decreases the noise attributable to fan bearings.
One wonders whether manufacturers test noise-level only for well-lubricated fans with no motor whine, or if they simply choose "typical" product sample.
Apparently, the fan bearings can be lubricated. Again, forgive my naive enthusiasm about this, but I never considered it before.
A small pocket-knife blade can be use to lift the round manufacturer's label on the exhaust-side of the fan. Under the label, probably in dead-center, there should be a plastic or rubber seal which just lifts up with the seal -- stuck to the adhesive side.
My friend suggests that a drop or two of teflon grease significantly decreases the noise attributable to fan bearings.
One wonders whether manufacturers test noise-level only for well-lubricated fans with no motor whine, or if they simply choose "typical" product sample.