Are Dehumidifiers Worth It? An In-Depth Look At The Costs And Benefits

Dehumidifiers are appliances that remove excess moisture from the air in your home. With their ability to control humidity levels, dehumidifiers can help mitigate mold/mildew growth, allergies, and more.

If you’re short on time, here’s a quick answer to your question: For most homes, a dehumidifier is worth the investment for the benefits of reducing humidity and preventing moisture damage and mold growth, provided you get a properly sized unit and use it correctly.

The costs are reasonable for most models that adequately dehumidify average rooms.

In this comprehensive guide, we’ll look at the pros and cons of dehumidifiers, what features to look for, initial costs vs. long term savings, proper sizing and placement, operation costs, alternatives, and help you decide if purchasing a dehumidifier is worthwhile for your home.

Benefits and Use Cases

Dehumidifiers offer a wide range of benefits, making them a worthwhile investment for many homeowners. Here are some of the key benefits and use cases of using a dehumidifier:

Controlling Humidity and Reducing Mold/Mildew

One of the primary reasons people invest in dehumidifiers is to control humidity levels in their homes. Excess moisture in the air can lead to the growth of mold and mildew, which can cause serious health issues and damage to your property.

By removing excess moisture from the air, dehumidifiers can help prevent mold and mildew growth, creating a healthier and safer living environment.

In fact, according to the Centers for Disease Control and Prevention (CDC), indoor humidity levels should be kept below 50% to reduce the risk of mold growth. Using a dehumidifier can help achieve and maintain these optimal humidity levels.

Allergy and Asthma Relief

Dehumidifiers can also provide relief for individuals suffering from allergies and asthma. High humidity levels can worsen allergy symptoms and trigger asthma attacks. By reducing humidity, dehumidifiers can help alleviate these respiratory issues by creating a drier and more comfortable indoor environment.

According to the American Academy of Allergy, Asthma & Immunology, keeping humidity levels below 50% can help reduce the presence of dust mites, a common allergen, and improve overall indoor air quality. This can lead to reduced allergy symptoms and improved respiratory health.

Preventing Moisture Damage

Excess moisture in the air can cause damage to your home and belongings. It can lead to peeling wallpaper, warped wood, and musty odors. By using a dehumidifier, you can prevent these issues and preserve the integrity of your home.

A dehumidifier can be particularly beneficial in areas of the home that are prone to moisture damage, such as basements, bathrooms, and laundry rooms. By maintaining optimal humidity levels, you can protect your home from costly repairs and maintain its value.

Cost Considerations

When considering whether dehumidifiers are worth the investment, it is important to evaluate the various costs involved. Let’s take a closer look at the purchase price, energy usage, and maintenance expenses associated with dehumidifiers.

Purchase Price

The initial purchase price of a dehumidifier is an important factor to consider. The cost can vary depending on the size, brand, and features of the unit. Basic models can range from $50 to $200, while more advanced models with additional features can cost up to $500 or more.

It is important to assess your specific needs and budget before making a purchase decision.

Energy Usage

Another cost consideration is the energy usage of a dehumidifier. Dehumidifiers consume electricity to remove moisture from the air. The amount of energy used can vary depending on the size and efficiency of the unit.

Energy-efficient models are designed to minimize energy consumption and can result in lower electricity bills. It is recommended to look for dehumidifiers with an ENERGY STAR certification, as they meet strict energy efficiency guidelines set by the Environmental Protection Agency.


Maintenance expenses should also be taken into account when considering the overall cost of owning a dehumidifier. Regular maintenance is necessary to keep the unit running smoothly and efficiently. This includes cleaning or replacing the air filters, emptying the water tank, and occasionally cleaning the coils.

The cost of replacement filters and any necessary repairs should be factored into the overall cost of owning a dehumidifier.

It is also worth noting that some dehumidifiers come with additional features, such as built-in humidistats or automatic shut-off functions. While these features may increase the initial purchase price, they can help save energy and potentially reduce maintenance costs in the long run.

Ultimately, the costs associated with dehumidifiers can vary depending on factors such as the size of the unit, energy efficiency, and maintenance requirements. It is important to carefully consider these cost considerations and weigh them against the potential benefits of improved air quality and reduced humidity levels in your home.

Choosing the Right Dehumidifier

When it comes to choosing the right dehumidifier for your home, there are several factors to consider. These factors can help ensure that you select a dehumidifier that is not only suitable for your specific needs but also provides you with the most benefits.

Here are three important considerations to keep in mind:

Unit Capacity for Room Size

One of the first things to consider when choosing a dehumidifier is the unit’s capacity in relation to the size of the room you intend to use it in. Dehumidifiers come in various sizes and capacities, and it’s important to choose one that can effectively remove moisture from the air in your specific space.

A general rule of thumb is that a dehumidifier with a capacity of 30 pints per day is suitable for a small room, while a capacity of 50 pints per day is better for larger areas. However, it’s always a good idea to consult the manufacturer’s guidelines or seek professional advice to ensure you choose the right capacity for your specific room size.

Features Like Humidistat and Drainage

Another important factor to consider is the features that come with the dehumidifier. Some dehumidifiers have built-in humidistats, which allow you to set a desired humidity level and have the unit automatically turn on and off to maintain that level.

This can be particularly beneficial if you want to maintain a specific humidity level in a room, such as a basement or a bedroom. Additionally, dehumidifiers with drainage options, such as a built-in pump or a hose connection, can make it easier to empty the collected water without the need for frequent manual emptying.

These features can enhance the convenience and effectiveness of the dehumidifier.

Reliable Brands and Models

Lastly, it’s important to consider the reliability and reputation of the brands and models available in the market. Investing in a dehumidifier from a reputable brand can give you peace of mind knowing that you are purchasing a high-quality product that is likely to last longer and perform better.

Researching customer reviews and ratings can be a great way to gauge the reliability and performance of different dehumidifier models. Additionally, seeking recommendations from friends, family, or professionals can also help you narrow down your options and choose a dehumidifier that is worth the investment.

Remember, choosing the right dehumidifier is essential to ensure you get the most out of your investment. By considering factors such as unit capacity for room size, features like humidistats and drainage options, and reliable brands and models, you can make an informed decision that will provide you with the benefits you need to maintain a comfortable and healthy indoor environment.

Proper Installation and Use

Placement Guidelines

Proper placement of a dehumidifier is crucial for its efficient operation. When deciding where to place your dehumidifier, consider the areas in your home that are most prone to excess moisture, such as basements, bathrooms, or laundry rooms.

These areas typically have higher humidity levels and are more susceptible to mold and mildew growth.

It is recommended to place the dehumidifier in a central location within the room, away from walls or furniture that could obstruct airflow. Ensure that there is enough clearance around the unit for proper ventilation.

Avoid placing the dehumidifier near sources of heat, such as radiators or direct sunlight, as this can affect its performance.

For larger areas, multiple dehumidifiers may be necessary to effectively control humidity levels throughout the space. Consider consulting with a professional to determine the ideal number and placement of dehumidifiers for your specific needs.

Operating Tips

To maximize the efficiency and effectiveness of your dehumidifier, follow these operating tips:

  • Set the humidity level to the recommended range for your home, typically between 30% and 50%. This range helps maintain a healthy and comfortable indoor environment while preventing excessive moisture buildup.
  • Keep doors and windows closed while the dehumidifier is running to prevent outside humidity from infiltrating the room.
  • Regularly check and empty the water collection container to ensure uninterrupted operation. Some dehumidifiers also offer the option for continuous drainage, which eliminates the need for manual emptying.
  • Consider using a timer or programmable settings to control when the dehumidifier operates, saving energy and reducing overall costs.


Proper maintenance is essential for the longevity and efficient operation of your dehumidifier. Here are some maintenance tasks to keep in mind:

  • Clean the air filter regularly according to the manufacturer’s instructions. A dirty filter can hinder airflow and reduce the dehumidifier’s effectiveness.
  • Inspect the drain hose (if applicable) for any clogs or obstructions, and clear them if necessary.
  • Occasionally wipe down the exterior of the dehumidifier with a damp cloth to remove dust or debris.
  • Consider scheduling annual maintenance by a professional technician to ensure the internal components are in good working condition.

By following these installation and usage guidelines, you can optimize the performance of your dehumidifier and enjoy the benefits of maintaining a healthier and more comfortable indoor environment.

Alternatives to Dehumidifiers

Improving Home Ventilation

One alternative to using dehumidifiers is improving the ventilation in your home. Proper ventilation helps to circulate fresh air throughout the house, reducing the moisture levels and preventing the growth of mold and mildew.

Opening windows and using exhaust fans in bathrooms and kitchens can promote air circulation. Installing a whole-house ventilation system, such as an energy recovery ventilator (ERV) or a heat recovery ventilator (HRV), can also be an effective way to bring in fresh air while removing excess humidity.

DIY Dehumidification Methods

If you’re looking for cost-effective alternatives to dehumidifiers, there are several do-it-yourself methods that you can try. One option is using moisture-absorbing materials like silica gel or calcium chloride crystals in areas prone to high humidity, such as closets or basements.

These materials can help to absorb excess moisture from the air and reduce humidity levels. Another DIY solution is using natural dehumidifiers like bamboo charcoal or salt. These materials have the ability to absorb moisture and are often used in small enclosed spaces like shoe closets or drawers.

Additionally, you can also make use of proper insulation and sealing in your home to prevent the entry of moisture. By ensuring that windows, doors, and other potential sources of air leaks are properly sealed, you can reduce the amount of moisture that enters your home.

This can be especially helpful in preventing condensation and high humidity levels in basements or crawl spaces.

While these alternatives to dehumidifiers may not be as effective in extreme cases of high humidity, they can be a good starting point for maintaining comfortable humidity levels in your home. It’s important to note that the effectiveness of these methods may vary depending on the specific conditions of your home and the level of humidity you’re dealing with.

For more information on improving home ventilation and other DIY dehumidification methods, you can visit reputable sources like the U.S. Environmental Protection Agency (EPA) or the U.S. Department of Energy.


Overall, a quality dehumidifier that is properly sized and used can provide beneficial humidity control in most homes, helping prevent moisture issues and improve comfort levels.

While not free of costs and maintenance requirements, dehumidifiers offer a reliable way to reap the advantages of regulating your indoor air humidity levels. Weighing your specific needs against the costs can help determine if getting a dehumidifier is a smart investment for your home.

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