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How Much Water Should a Dehumidifier Collect in a Day?

One of the best inventions for home maintenance of the recent century has to be dehumidifiers. This device’s attention to human lifestyle and moisture control of living space justifies its popularity among the masses.

Homeowners all across the globe have been investing in dehumidifiers a lot recently, given their functionality and commitment to clean living. Before diving into details of its functionality and performance, first, let’s unfold what a dehumidifier is expected to do.

As the name suggests, dehumidifiers absorb the water vapors from the air to control air moisture in a living space.

A dehumidifier is the most effective way to clean the surrounding air from dust mites and mold. Although the market is filled with different companies offering a variety of dehumidifiers, all of them have the same basic principle of operation: to reduce the air’s humidity level.

Dehumidifier users, especially first-time buyers, are always concerned about different functionalities and performance-related questions of dehumidifiers.

The most prominent concern of dehumidifier users is the amount of water they can collect daily. Several factors are affecting the performance and water collection rate of dehumidifiers.

The following section answers all the necessary water collection rates and timelines to guide dehumidifier users.

The capacity and size are the prime determinants of the amount of water a dehumidifier collects daily. However, a typical-sized dehumidifier can collect 10 to 20 liters of water daily. Larger models of dehumidifiers with huge capacities can collect up to 50 liters of water daily.

Several other factors like the season, humidity level, time of the day, dehumidifier brand, and the area where the dehumidifier is placed also determine the water collection rate of a dehumidifier.

Factors Affecting Dehumidifier Water Collection

  1. Capacity

Irrespective of the amount of moisture in your living space where you have put the dehumidifier, it can only collect water that falls within its capacity.

The size of a dehumidifier and its capacity to absorb water must be determined based on the humidity level of the living space you are placing it in.

Dehumidifiers with fewer capacities than the humidity level of the surroundings need to be emptied for maximum outcome.

If you prefer a smaller machine over a large capacity, you must empty the water container of the dehumidifier once it fills up multiple times a day to enjoy the leisure of the dehumidifier.

  1. Humidity Level of Surrounding

Choosing the size of a dehumidifier based on the humidity level of the area, it is expected to be placed in is the prime aspect of benefitting from its use. Large open spaces, kitchens, laundry rooms, and bedrooms all differ in the amount of moisture in the air.

A dehumidifier placed in either of these places will collect the water accordingly. If the surrounding air does not have a lot of moisture and your dehumidifier is small, you can achieve the desire simply by emptying the water container of your dehumidifier once a day.

  1. Humidity Goal

Another prominent factor that impacts the amount of water collected by a dehumidifier is the level of humidity you want to achieve.

Based on the living conditions and temperature of the surrounding, it is common for people to prefer different humidity levels. The average humidity level within homes falls between 30% to 50%.

If you want a relatively less or more moist surrounding air than average in your living space, you will need to set the dehumidifier accordingly.

The water collected by the dehumidifier will increase if you wish to achieve a low moist area and decrease if you only want excess moisture to be absorbed.

  1. Running Time

The time you actively run your dehumidifier is directly proportional to the water it can extract from the air. Based on the area of your room and the humidity level, the running time of the dehumidifier changes.

For an average dehumidifier with 30 liters capacity and 50 square foot area, it takes about 11 minutes to reduce the humidity level of surrounding air from 90% to 40%


How often a dehumidifier tank fills up?

As much as it depends on the surrounding humidity level, the average time for a 2 liters dehumidifier water tank takes about six to seven hours to fill up. The time increases with larger water tanks.

How long do dehumidifiers take to start working?

As dehumidifiers are the recent inventions of the digital era and completely operate on technology, they start working as soon as they are switched on.

Once it is turned on, a typical dehumidifier water tank takes approximately six to seven hours to fill.

Should I always close windows and doors while using the dehumidifier?

Yes, you should if the humidity level outdoors is more. Opening the doors and windows results in increased moisture in the surroundings, resulting in a dehumidifier running a bit longer to suck the required amount of humidity from the air.

However, opening windows and doors can decrease the inside humidity level if outside humidity is lower than indoor humidity.

Should I run a dehumidifier all day long?

When the humidity rate is more than the average 60%, you will need to run a dehumidifier all day long, if needed, even at nighttime. If the humidity level is not so high, you can gain results by running a dehumidifier for a few hours in the daytime.

Can a dehumidifier dehydrate me?

The answer is a clear no! The functionality of the dehumidifier works only in the air. In no way is the dehumidifier capable of dehydrating humans. Irrespective of the time you run a dehumidifier, it will not dehydrate you.

Bottom Line

As the amount of water a dehumidifier can collect a day depends on its capacity, it is important to choose the dehumidifier that suits your living conditions best.

Therefore, considering all the factors that affect the amount of water collected by the dehumidifier before buying is an important aspect of fully enjoying the ease.

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