How Much Water Should a Dehumidifier Collect In a Day?

Did you know that a dehumidifier does more than just reduce the atmospheric humidity levels? It plays an essential role in keeping the environment healthy by eliminating mold and dust. It is the process that also keeps pests like spiders, cockroaches, and silverfish at bay. 

Besides, as it reduces the dust in your home, you don’t have to keep cleaning your home often. It also lowers energy bills because it improves your air conditioner efficiency. 

Dehumidifiers reduce humidity levels by absorbing water from the air. For best results, run the unit in all rooms, including the kitchen, closet, bathroom, and even closed spaces. 

It’s while you do all this that you wonder how much water a dehumidifier extracts in a day. Well, read on for your answer! 

How Much Water Should a Dehumidifier Collect In a Day?

There is no fixed amount or answer to the question. Depending on your home humidity and dehumidifier capacity, it can hold anywhere between 10 to 100 pints of water.

And it doesn’t stop there. Other factors that determine the amount of water a dehumidifier can collect in a day like:

  1. Relative humidity levels
  2. How much water vapor and moisture there is in the atmosphere
  3. Current room temperature
  4. The unit’s power, fan speed, and rate of moisture extraction
  5. Size of the container for collecting extracted water

How a Dehumidifier Works And Collects Water

It’s an exciting process that starts with the atmospheric air entering the dehumidifier. This air passes over icy coils cooled by a refrigeration system.

The cold coils condense the vapor, and the resulting liquid collects in the collection bucket below.

Frequently Asked Questions 

Here are a few of the common questions people ask about dehumidifiers.

Do Dehumidifiers Continuously Collect Water?

It depends on the dehumidifier type.

Portable electric dehumidifiers have a container to collect the water for as long as it runs. However, different models have different-sized containers to empty. You can do it manually, regularly, or use a pipe for water draining purposes. It depends on factors like how long you run the unit and the container’s capacity.

Desiccant dehumidifiers however do not collect water but instead absorb it. You need to recharge them to run continuously and maintain humidity levels.

How Quickly Should a Dehumidifier Fill Up?

If you wonder how long it takes for a dehumidifier to start collecting water, it’s usually once switched on. How quickly they fill up takes about six to seven hours if the container can hold 0.5 gallons of water. 

Once again, it depends on how many hours you use the unit, it’s capacity and power consumption, and the room’s humidity levels.

Why Is My Dehumidifier Not Collecting Water?

There are various possible reasons for a dehumidifier that runs but does not collect water. They include:

  • Current humidity level. Dehumidifiers collect water only if the immediate surrounding temperature is more than 65°F.
  • A faulty fan motor requiring attention.
  • Frozen coils. The best solution for this problem is to let the coils defrost or invest in a dehumidifier with automatic defrosting coils.
  • Absence of any motor overload protection.

Do Dehumidifiers Remove Standing Water?

No, because dehumidifiers only remove surrounding moisture. The best way to remove stagnant or accumulated water is with the help of a pump or manually removing it.

What Does It Mean When The Dehumidifier Fills Quickly?

If you wonder why your dehumidifier is filing up so fast, it’s because of excessive atmospheric moisture. And this is usually a result of:

  • Increased humidity levels.
  • A water leak from cracked basement pipes or crawl spaces.
  • Excessive laundry room moisture.

It’s worth investing in humidity detectors if you notice your dehumidifier tends to fill up fast. They help you keep track of your home’s actual humidity levels.

Why Is My Dehumidifier Collecting So Much Water?

Once again, it’s because of excessive atmospheric humidity. 

Is It Okay To Drink The Water Collected In a Dehumidifier?

No. It’s not safe to drink the water that collects in a dehumidifier. It is not treated or filtered and thus isn’t potable water.

How Long Should I Run a Dehumidifier After a Water Leak?

You will have to use your unit for a few days to a few weeks to dry the space after a water leak. Various factors determine how long porous surfaces take to get completely dry. 

Examples are:

  • The environment.
  • How severe the leak is.
  • Humidity levels.

When Will a Dehumidifier Stop Collecting Water?

Dehumidifiers stop collecting water once the humidity levels are back under control. The unit automatically reduces its moisture extraction functioning upon reaching the ideal relative humidity levels. 

And most models have a feature that ensures automatic shutoff. Another reason for the dehumidifier to stop collecting water is device problems.

Will a Dehumidifier Help In Drying a Wet Carpet?

Yes, you can use both fans and dehumidifiers to dry a wet carpet. They both extract moisture in the atmosphere and carpet, and foul odors, and also prevent mildew growth.

Does Everyone Need a Dehumidifier?

No, not everyone needs one because a dehumidifier dries the air. So it’s of no use to someone living in a dry climate like the desert or a high-altitude area. It’s also not required in places where you use gas or electricity to heat the home.

Besides, it also does more harm than good if someone suffering from a dry cough or stuffy nose uses it.

Related article: Can a Dehumidifier Dehydrate You?

Is a Dehumidifier Needed In Summer?

The excessive moisture in the summer months makes the air sticky and unpleasant. A dehumidifier helps in reducing humidity levels and increasing your home’s comfort levels in summer.

Besides, high humidity levels also make the surrounding air seem warmer than it is.

Where Are Dehumidifiers Used?

Dehumidifiers are most needed and used in places with moisture problems. They include bathrooms, bedrooms, indoor pool areas, laundry rooms, basements, and crawl spaces.

How Do I Know If I Need a Dehumidifier?

A few signs indicate the need for a dehumidifier like:

  • The rooms feeling stuffy.
  • Mold visible around you.
  • Presence of moist or wet stains on ceilings and walls.
  • A musty odor.
  • Excessive moisture.
  • Condensation-covered windows.

At What Point Do I Need a Dehumidifier?

You may need a dehumidifier to reduce more than 60% humidity levels. You must reduce the atmospheric moisture to prevent possible property damage and mold or mildew growth.

Should I Use a Dehumidifier In Summer Or Winter?

While you can use dehumidifiers in the spring, summer, and fall, it isn’t necessary during the dry winter. It’s, however, better to unplug before stowing the unit away to prevent its possible damage.

Also, make sure you empty and dry the water tank before storing the unit, to prevent mildew growth in the tank.

Do Dehumidifiers Work In Cold Rooms?

No, because they do not function properly in cold rooms. Most dehumidifiers work best at a temperature of 65 degrees Fahrenheit. However, there are some units with special defrost functions that work below this temperature. 

What Is The Best Time Of Day To Use a Dehumidifier?

It’s better to use a dehumidifier between 10 pm, and 7 am. This is only because this is when most energy companies charge less for electricity. Other than that, there is no best time to use dehumidifiers. You can use it anytime and as long as required.


By now you should have your answer to the question, how much water should a dehumidifier collect in a day. It depends on your unit, which is why you should carefully select and invest in the right dehumidifier.

Related articles:
Best Quiet Dehumidifiers for Homes
Best Dehumidifier for Indoor Pool

Do I Need A Wardrobe Dehumidifier
Do You Use A Humidifier In The Summer

Leave a Comment