Do you struggle with musty smells, condensation on your windows, or mold in your home? These issues are often the result of excess moisture in the air. A whole house dehumidifier can be a game-changer for maintaining a comfortable and healthy home environment. However, the installation process can be daunting for those who are not familiar with the process. In this article, we will guide you through the steps to install a whole house dehumidifier and help you create a healthier and more comfortable home.

1. Understanding Whole House Dehumidifiers: What Are They and Why Do You Need One?

What Are Whole House Dehumidifiers and Why Do You Need One?

If you live in an area with high humidity levels, you may have noticed moisture buildup in your home. This can cause a host of problems, including mold growth, musty odors, and damage to your furniture and flooring. This is where whole house dehumidifiers come in.

Whole house dehumidifiers are appliances that are designed to regulate the moisture levels in your home. Unlike portable units, which only control the humidity in one room, whole house dehumidifiers are installed in your HVAC system and control the humidity levels throughout your entire home.

So, why do you need a whole house dehumidifier? Here are some reasons:

  • Preventing mold growth: Mold thrives in moist environments, and a whole house dehumidifier can help keep the moisture levels low enough to prevent it from growing.
  • Reducing allergens: High humidity levels can also lead to an increase in allergens like dust mites and mold spores. By controlling the humidity levels, you can help reduce these allergens in your home.
  • Protecting your home: Excess moisture can cause damage to your home’s structure, including wood rot, peeling paint, and warping hardwood floors. A whole house dehumidifier can help prevent this damage from occurring.
  • Improved indoor air quality: Controlling the moisture levels in your home can also improve your indoor air quality, making it easier to breathe and reducing unpleasant odors.

Overall, a whole house dehumidifier can help improve your home’s comfort level, protect your property, and safeguard your health. In the next section, we’ll discuss how to choose the right one for your home.

2. Choosing the Right Whole House Dehumidifier for Your Home: Factors to Consider

Before purchasing a whole house dehumidifier, it’s important to consider several factors to ensure that you choose the right one for your home. Here are some key factors to keep in mind:

1. Size and Capacity

Make sure to choose a dehumidifier that can handle the size of your home. A smaller dehumidifier may not be powerful enough to effectively remove moisture from the air, while a larger one may be too costly and inefficient for your needs. Check the product’s specifications to determine its recommended area coverage and water removal capacity.

2. Energy Efficiency

Look for a dehumidifier that has an Energy Star certification, which means it meets energy-efficiency guidelines set by the Environmental Protection Agency. This can help you save money on utility bills and reduce your carbon footprint.

3. Noise Level

A noisy dehumidifier can be disruptive to your daily routines, so consider one that operates quietly. Look for models that have been designed with noise-reducing features, such as insulated compressors or fans.

4. Types of Filters

A whole house dehumidifier typically has air filters to clean and purify the air as it removes moisture. Choose a model that has high-quality filters, such as HEPA or activated carbon filters, which can trap pollutants and allergens from the air more effectively than traditional filters.

By taking these factors into account, you can identify the best whole house dehumidifier for your home. Keep in mind that investing in a quality dehumidifier can help you prevent moisture-related problems, such as mold growth, and improve the overall air quality and comfort in your home.

3. Installing a Whole House Dehumidifier: Tools You’ll Need and Preparation Steps

Before installing your whole house dehumidifier, you need to prepare the necessary tools to ensure a smooth installation process. Here are the tools you’ll need:

  • Drill motor: You’ll need a drill motor to create holes for mounting brackets and screws.
  • Tape measure: In order to accurately measure the dimensions and placement of your whole house dehumidifier.
  • Saw: A saw is necessary for cutting openings in your home’s ductwork.
  • Pliers: You’ll need pliers for tightening bolts and nuts that hold the dehumidifier in place.
  • Screwdriver: This tool is used for securing mounting brackets and screws when installing your dehumidifier.
  • Caulking gun and sealant: To seal any gaps between the dehumidifier and your home’s ductwork.

Once you have gathered all the necessary tools, it’s important to prepare the installation site and any necessary ductwork modifications. This may include cutting openings in your ductwork to insert the whole house dehumidifier or adding new ductwork to connect it to your existing HVAC system.

Additionally, you’ll need to make sure the installation site has access to a power source, as whole house dehumidifiers require electricity to operate.

By properly preparing your installation site and having the necessary tools in advance, you’ll be able to streamline the installation process and ensure your whole house dehumidifier functions effectively.

4. Step-by-Step Guide: How to Install Your Whole House Dehumidifier

In this section, we will provide a step-by-step guide on how to install your whole house dehumidifier. Before proceeding with the installation, make sure to turn off the electricity in your home and wear appropriate safety gear.

Step 1: Choose the Right Location

The first step is to choose the right location for your whole house dehumidifier. This should be in a central location, preferably near your HVAC system, to ensure that it effectively dehumidifies your entire home.

Step 2: Install the Drainage System

Next, install the drainage system for your dehumidifier. This usually involves installing pipes and plumbing that will allow the collected moisture to drain outside your home. Make sure to carefully follow the instructions provided by the manufacturer.

Step 3: Connect the Power

After installing the drainage system, connect the power supply for your dehumidifier. This usually involves connecting it to your home’s electrical panel and switching it on.

Step 4: Test and Adjust Settings

Once everything is installed and connected, it’s time to test your whole house dehumidifier. Turn it on and adjust the settings to your desired level of humidity. Make sure it’s working properly by checking the drains for any leaks.

Step 5: Maintain Proper Maintenance

To keep your whole house dehumidifier running efficiently, it’s important to perform proper maintenance. This includes cleaning the filters, emptying the drain pan, and inspecting the drainage system regularly. By taking these steps, you can ensure that your dehumidifier is working properly and improving the air quality in your home.

By following these steps, you can install your whole house dehumidifier with ease and enjoy the benefits of improved air quality and comfort in your home.

5. Maintenance Tips: Keeping Your Whole House Dehumidifier Running Efficiently

Once you’ve installed a whole house dehumidifier, maintenance becomes important to keep it running efficiently and to ensure it lasts for a long time. Here are some tips to help you maintain your whole house dehumidifier:

1. Clean the Filter Regularly

One of the most important maintenance tasks is cleaning the filter regularly. The filter is responsible for removing airborne particles like dust, dirt, and allergens from the air. If the filter is dirty, it can impact the efficiency of your dehumidifier. Check the manufacturer’s instructions to see how often you need to clean or replace the filter. Typically, it’s recommended to clean the filter at least once a month.

2. Check the Drainage Hose

Make sure that the drainage hose is clear and free from any clogs or debris. Check the drainage hose regularly to ensure that water can flow freely. If the hose becomes clogged, it can cause the dehumidifier to stop working properly. You can use a small brush or pipe cleaner to clear any debris from the hose.

3. Monitor Humidity Levels

Keep an eye on the humidity levels in your home and adjust the settings on your dehumidifier as needed. Some whole house dehumidifiers have built-in humidity sensors that will automatically adjust the settings based on the humidity level in your home. If your dehumidifier doesn’t have this feature, invest in a hygrometer to monitor humidity levels. The optimal range for indoor humidity is between 30% and 50%.

Following these maintenance tips will help you keep your whole house dehumidifier running efficiently and provide optimal air quality for your home. Don’t forget to refer to the manufacturer’s instructions for specific maintenance requirements for your particular dehumidifier model.

6. Troubleshooting Common Problems with Whole House Dehumidifiers

Dehumidifiers are known to be reliable devices, but just like any other appliance, they can encounter problems every now and then. Here are some common issues that you may encounter with your whole house dehumidifier, and what you can do to troubleshoot them.

1. Dehumidifier won’t turn on

If your dehumidifier won’t turn on, check the outlet first to ensure it’s working. If the outlet is fine, check the power cord to make sure it’s properly plugged in. If everything is properly connected, check the control panel to see if it’s displaying an error message. If there’s an error message, consult the user manual for troubleshooting tips. If you still can’t find the problem, contact the manufacturer for assistance.

2. Dehumidifier is not removing enough moisture

If you feel like your whole house dehumidifier is not removing enough moisture from the air, there are several things you can do to troubleshoot the issue. First, make sure the dehumidifier is properly sized for the space and humidity levels in your home. If it’s too small, it won’t be able to keep up with the moisture levels. Additionally, check the air filter and make sure it’s clean. Dirty filters can hinder the dehumidifier’s efficiency.

3. Dehumidifier is leaking

If you see water leaking from your whole house dehumidifier, it could be due to a variety of factors. Check the water tank to make sure it’s properly attached and not overflowing. Additionally, check the drainage hose to ensure it’s properly connected and not clogged. If the hose or tank is damaged, it will need to be replaced.

By troubleshooting these common issues with your whole house dehumidifier, you can ensure it runs smoothly and efficiently, keeping your indoor air quality at optimal levels.

7. Enjoying the Benefits: How a Whole House Dehumidifier Can Improve Your Home’s Air Quality and Comfort Level

Installing a whole house dehumidifier not only reduces excessive moisture in your home, but it also enhances the overall air quality and comfort level of your space. Let’s take a closer look at some of the key benefits:

Reduced Risk of Mold and Mildew

High humidity levels can create the perfect environment for mold and mildew to thrive. These unwanted guests can lead to serious health problems, including respiratory issues and allergies. A whole house dehumidifier eliminates the excess moisture that mold and mildew feed on, reducing the risk of their growth and the negative impact on your health.

Improved Air Quality

Excess humidity can also cause musty odors and impurities in the air, leading to poor indoor air quality. A whole house dehumidifier removes the moisture from the air, which in turn reduces the concentration of pollutants and allergens, such as dust and pet dander. This results in fresher and cleaner air in your home.

Increased Comfort Level

High humidity can also make your home feel uncomfortably hot and humid, especially during the summer months. A whole house dehumidifier removes the excess moisture from the air, making it feel cooler and more comfortable. This means you can enjoy your living space without feeling sticky and uncomfortable.

Overall, a whole house dehumidifier can significantly improve the air quality, comfort level, and overall health of your home. Investing in one can lead to a happier, healthier, and more comfortable living space for you and your family.

People Also Ask

How do I choose the right size whole house dehumidifier?

To choose the right size whole house dehumidifier, you will need to calculate the square footage of your home, add together the areas of all the rooms, and then consider the current humidity level in your area. You can consult with a professional to help you choose the right size for your home.

Where is the best place to install a whole house dehumidifier?

The best place to install a whole house dehumidifier is in a central location, such as the basement, so that it can effectively remove moisture from the entire house. It should also be installed at least six inches above ground level to prevent water damage.

What electrical requirements are needed to install a whole house dehumidifier?

The electrical requirements needed to install a whole house dehumidifier depend on the size and type of unit you are installing. Generally, a dedicated circuit with a 20-amp breaker and 120-volt outlet is needed. It is best to consult with an electrician to determine the specific requirements for your home.

Do I need a professional to install a whole house dehumidifier?

While it is possible to install a whole house dehumidifier yourself, it is recommended to hire a professional to ensure that it is installed correctly and safely. A professional will also be able to recommend the best location for the unit and ensure that all electrical and plumbing requirements are met.

How often do I need to clean and maintain my whole house dehumidifier?

You should clean and maintain your whole house dehumidifier at least once a year, or more often if the unit is used frequently. This includes cleaning or replacing the air filter, clearing any debris from the drain line, and checking the unit for any signs of wear or damage.


Installing a whole house dehumidifier can be a great solution for controlling moisture and improving indoor air quality. It is important to choose the right size for your home, install it in the proper location, and ensure that all electrical and plumbing requirements are met. While you can install it yourself, it is recommended to hire a professional for safety and accuracy. Regular cleaning and maintenance will help ensure that your dehumidifier works effectively for years to come.