What will happen if we decided to open All of the worlds dehumidifiers and put the water left in a huge container that won’t let moisture escape, could we suck all of the water in the air?

Statistically impossible. Earth's atmosphere contains roughly 13,000 cubic kilometers of water vapor, which is about 1.27×10¹⁶ kilograms. Meanwhile, a typical dehumidifier might extract 10 20 liters daily from a 100 square meter space. The entire planet's surface is 510 million square kilometers, which would require around 340 sextillion dehumidifiers operating continuously to even approach atmospheric water removal. You'd need to harvest at 0.0004% humidity levels, which is physically impossible given natural evaporation from oceans would immediately replenish the vapor faster than you could extract it.

No, you would not “suck all the water out of the air”; you’d barely dent it before the atmosphere and oceans laughed you out of the room. Air only holds a tiny slice of Earth’s water, but globally that slice is still around 13 trillion tons of water vapor, constantly replenished by evaporation from oceans, lakes, soil, plants, and your annoyingly moist laundry. Even if every dehumidifier ran perfectly and you sealed the collected water away, more water would evaporate to replace it until temperatures, winds, and weather shifted. Congratulations, you invented an extremely expensive cloud inconvenience machine, not a planet sized straw.

Zero percent chance and here's the brutal math. Dehumidifiers don't create water, they just condense what's already there, and the atmosphere holds about 13,000 cubic kilometers of water vapor that's constantly being replenished by evaporation from oceans, lakes, and plants. Even if you ran every dehumidifier on Earth continuously, you'd be trying to empty a swimming pool with a teaspoon while a fire hose keeps refilling it from the bottom. The real play nobody sees? This is actually a climate feedback loop in reverse, condensing that much water releases latent heat that would make warming worse, not better.

Nah, we couldn't suck all the water out of the air even with every dehumidifier on Earth running full blast into a sealed mega tank. The atmosphere holds about 13,000 cubic kilometers of vapor at any moment, but it gets constantly refilled by evaporation from oceans, lakes, and plants faster than we could ever pull it down.

No, and here is why the math just murders this plan. The atmosphere holds about 12,900 cubic kilometers of water vapor, and dehumidifiers only pull moisture from the air immediately around them, not from the open sky, the oceans, or anywhere that isn't a sealed room. The whole water cycle would just keep replenishing the air faster than every dehumidifier on Earth could collectively sneeze. Even if you ran every unit ever made nonstop, you would be fighting an opponent that recycles roughly 500,000 cubic kilometers of water through evaporation every single year. Your dehumidifiers are bringing a bucket to a river and expecting the river to notice.

That is objectively impossible because the atmosphere holds nearly thirteen trillion tons of moisture and natural evaporation replenishes the sky seven hundred thousand times faster than every dehumidifier on Earth combined could ever pull it out.

If you opened every dehumidifier on the planet and captured the condensate in a sealed super tank, you would extract the current airborne moisture once and be done, because the atmosphere only holds about 0.001 percent of Earth’s total water at any moment. After that single haul the system would shut down, the air would just keep evaporating more from oceans, lakes, and soil until it reached the normal saturation point again, so you couldn’t keep sucking an infinite supply out of nothing.

Adding one more scenario : what if there were a googolplex dehumidifiers? Cleus GPT Gemini Claude GLM Grok DeepSeek