Like outside it's 85 percent humidity at night, and you accidentally leave the swamp cooler running, will it add enough to reach 100 percent?
I M RIGHT
Favorite Answer
It won't go to 100% - the higher the ambient humidity, the less will evaorate from the swamp cooler. And there will be no cooling effect. Swamp coolers are effect in dry conditions like deserts.
GTB
Most swamp coolers vent their evaporate outside so they should not add to inside humidity however, the degree of cooling they provide is basically small.
elhigh
It won't add more humidity if the air is already near saturation, but it won't provide any cooling either.
Spock (rhp)
no, it won't. I've done it.
STEVEN F
If the humidity is that high, the swamp cooler won't actually cool AT ALL. More than likely, it won't impact the humidity much at all.