Choosing the right size dehumidifier for your basement is crucial to keep the moisture and humidity away from your basement. In addition, opting for the wrong size dehumidifier, for example, having a bigger one than needed, can have a negative impact on your electricity bill as well. So, if you are thinking to yourself, what size dehumidifier do I need for my basement, this is the blog post where you get the best answer to your question. So, let’s start without further ado.
What Size Dehumidifier Do I Need for My Basement?
As we briefly mentioned, choosing the wrong dehumidifier can cause various issues in the long run. In order to stay away from these unwanted circumstances, take a minute and read the below-mentioned points that explain the importance of buying the correct size dehumidifier for your basement.
If you buy a dehumidifier that is too small,
- The primary objective of buying a dehumidifier for your basement is to prevent it from getting damp and humid. If you happen to buy a small one than needed, it won’t do the job you expect.
- When the dehumidifier is too small to cover an area, it has to run constantly to get the desired humidity level. This can lead to increased electricity bill.
- When the dehumidifier is running 24/7 at its full capacity, it can hamper the longevity of the machine.
If you buy a dehumidifier that is too big,
- When a dehumidifier is too big for the area it is kept, it can over-dehumidify removing moisture too quickly. This can be uncomfortable for people and has the potential to cause damage to materials in your basement.
- Obviously, the larger units come with higher prices. You don’t want to pay unnecessary amount for a machine than you really need.
- Yes, it may run less frequently, but when a bigger machine operates, it has a direct impact on the electricity bill.
What Factors Should You Consider When Selecting a Dehumidifier Size?
As now you know the consequences of selecting a dehumidifier that is either too big or too small, let’s look at the factors that you should consider before buying a dehumidifier.
Size of Your Basement
This is the first and foremost factor that you should consider. You must know the overall size of your basement in square feet as larger basements require larger dehumidifiers with high moisture removal ability.
Most products mention their coverage in square feet. So, knowing the size of your basement is imperative before you consider anything. In addition, you should know the height of the ceiling.
A dehumidifier needs to effectively manage the volume of air within the space, and higher ceilings mean more air volume that needs dehumidification.
All in all, you must have a clear idea about the area you intend to cover in the basement with a dehumidifier.
Humidity Level
Without knowing the humidity level in the basement, it will be difficult for you to decide the capacity of the machine you want to buy. You can use a hygrometer to determine the existing humidity level of the basement.
For example, if the humidity is higher than 60%, you will have to opt for a powerful dehumidifier. Usually, the standard humidity level for the comfort of people and other materials is around 30-50%.
Climate and moisture Source
The climate conditions in your local area directly impacts the humidity levels in your basement. If you live in an area where you get a lot of rain the indoor humidity level will be high. This says you must go with a dehumidifier that has a high capacity.
In addition, it is crucial to consider the seasonal weather changes as well. Perhaps you want a dehumidifier only for a certain period of the year. So, make sure to consider this important factor.
Moreover, you should have a clear idea about the source of moisture that you plan to deal with a dehumidifier. Water seepage or poor drainage around your home’s foundation can contribute to higher moisture levels in the basement.
If your basement has such problems, you might need to select a dehumidifier that has a high capacity.
Further, many people forget to consider the activities in the basement when they think of buying a dehumidifier. If you do laundry or have a bathroom in the basement, it can increase the moisture in the premises.
What Size Dehumidifier Do I Need for My Basement?
Here’s a size chart and guidelines to help you select the appropriate dehumidifier based on the size of your basement.
Small Basements – up to 800 sq. ft.
For small basements up to 800 square feet, the required dehumidifier capacity varies based on humidity levels.
- Moderately Damp (50-60% Humidity) – A 10-20 pint dehumidifier is typically sufficient.
- Very Damp (60-70% Humidity) – A 20-25 pint dehumidifier is recommended.
- Wet (70-80% Humidity) – A 25-30 pint dehumidifier is necessary.
- Extremely Wet (80-100% Humidity) – A 30-40 pint dehumidifier is ideal.
Medium Basements – 800 to 1,500 sq. ft
For medium-sized basements between 800 and 1,500 square feet, the dehumidifier capacity should increase to handle larger areas.
- Moderately Damp (50-60% Humidity) – A 20-30 pint dehumidifier is usually adequate.
- Very Damp (60-70% Humidity) – A 30-40 pint dehumidifier is advisable.
- Wet (70-80% Humidity) – A 40-50 pint dehumidifier is needed.
- Extremely Wet (80-100% Humidity) – A 50-60 pint dehumidifier is recommended.
Large Basements – 1,500 sq. ft. and above
For large basements over 1,500 square feet, more powerful dehumidifiers are necessary to ensure efficient moisture control.
- Moderately Damp (50-60% Humidity) – A 30-40 pint dehumidifier is typically required.
- Very Damp (60-70% Humidity) – A 40-50 pint dehumidifier is suitable.
- Wet (70-80% Humidity) – A 50-70 pint dehumidifier is necessary.
- Extremely Wet (80-100% Humidity) – A 70+ pint dehumidifier is ideal, or consider using multiple units for very large spaces.
Adam Voges is a seasoned expert with 11 years of experience in the heating and cooling industry. His deep understanding of HVAC systems and cutting-edge home climate technologies makes him a trusted authority on maintaining comfortable and energy-efficient homes. Adam’s blog discusses the latest innovations, best practices, and troubleshooting tips for heating and cooling devices, helping homeowners make informed decisions about their indoor climate control. Whether you’re looking to upgrade your system, optimize energy usage, or solve common HVAC issues, Adam’s insights are invaluable. His passion for sustainable living and his commitment to enhancing home comfort shine through in every article he writes.
