How to Choose the Right Bathroom Dehumidifier Complete Guide

Are you struggling to keep your bathroom more comfortable and dry? You have come to the right place!

In this guide, we’ll help you make an informed decision when choosing the best dehumidifier for your bathroom. We’ll cover everything from features and benefits to potential drawbacks so that you can choose the perfect device for your needs.

Humidity levels in the home can create a number of negative health and safety concerns, including condensation build-up, dust mite infestations, mold growth and airborne allergens. A dehumidifier can help to reduce those risks by taking excess moisture out of the air. It can be challenging to choose the right dehumidifier for your bathroom due to the varying sizes, capacities and features offered. To find the most suitable option for your home, it is important to understand what type of unit is needed and how much space is available in your bathroom.

This guide will outline how to identify different types of dehumidifiers and considers key characteristics such as dimensions, water tank capacity, room size coverage and noise emission level when helping you select a model that meets your needs. In addition we’ll touch on basic installation methods for dehumidifiers and offer some top tips on using them safely & effectively in bathrooms. By the end of this article you should have an in-depth knowledge of which type of unit would best suit your differing requirements when choosing a bathroom dehumidifier system.

Factors to Consider

When choosing a dehumidifier for your bathroom, there are several factors you should consider. These include the size of the area you need to keep dry, the type of dehumidifier, and the associated cost. Additionally, some models come with additional features that may be beneficial to consider depending on your needs.

Size: The size of a dehumidifier is determined by its capacity and coverage area and is measured in pints per day (ppd) or liters per day (lpd). If your bathroom is less than 500 square feet in size, then you will most likely only need a small capacity model with 25 ppd or lpd as this will adequately cover this area. However, if your bathroom is larger than 500 square feet then you may want to consider purchasing a unit with greater capacity. Depending on the type of dehumidifier unit you buy, it may draw 30-60 watts of power which can affect costs over time.

Type: Dehumidifiers can generally be broken down into three categories – desiccant or absorbent models; refrigerant models; and hybrid models which use both methods. Desiccant units use moisture sucking technology while refrigeration units cool the air to create condensation which is collected in an internal reservoir. Alternatively, hybrid models often use both methods working in tandem to provide efficient drying capabilities.

Features: Many dehumidifiers come with some additional features such as auto shut off when they reach their desired humidity levels; digital display screens; sensors that allow for continuous monitoring; timer / scheduling functions; storage baskets/bags for drips; as well as portability options for easy transfer from one area to another within your home.

Room size and dehumidifier capacity

When selecting a dehumidifier for your bathroom, it is important to consider the size of the room you want to dehumidify. A small bathroom may need a unit with half-a-pint moisture extraction capacity whereas a larger one may need up to four or five pints or higher. The capacity of the dehumidifier should exceed the amount of moisture in the air in order for it to be most effective.

If there is too much humidity and your chosen dehumidifier fails to adequately remove it, you may find that condensation forms on walls and other surfaces, leading to further issues including dampness and mould growth. In general, units with higher capacities are also more expensive than smaller ones so bear this in mind when choosing your model.

Humidity level and required moisture removal

When considering the purchase of an air dehumidifier for your bathroom, it’s important to first determine the level of humidity in your bathroom and the amount of moisture that needs to be extracted from the air.

Different dehumidifiers have different capacities for removing moisture from your space. Generally, a larger capacity should be purchased for regions with a high level of humidity and in spaces not frequently ventilated.

Selecting a unit with too small a capacity can result in wasted energy as the unit will constantly need to be operated and emptied even when it is not likely necessary, while selecting a unit that is too large can increase energy bills by running more than necessary.

Humidity levels should also be checked often because they can fluctuate quite quickly due to weather or activity levels in your home.

Energy efficiency

When buying a bathroom dehumidifier, consider the unit’s energy efficiency rating. Choose a model that has been rated highly for energy efficiency by independent testing organizations. Look for Energy Star certification and the specific percentages that indicate how much the appliance will save on your electricity bills. Most Energy Star-rated dehumidifiers are very efficient and cost effective to run, helping you save money in the long run.

In addition, select models with adjustable humidity settings so you can adjust the level as needed depending on your specific needs. This will allow you to conserve energy while still controlling excess moisture levels in your bathroom.

III. Types of Dehumidifiers

When selecting the best dehumidifier for your bathroom, there are three main types to choose from: whole-house dehumidifiers, portable dehumidifiers, and in-line dehumidifiers. Determining which type will suit your needs depends on the size and layout of your bathroom, as well as other factors like convenience of use and noise level.

Whole House Dehumidifiers A whole house dehumidifier is the perfect choice for large bathrooms or bathrooms with an open floor plan. As it is designed to pull moisture out of several rooms at once, you can be sure that every corner of your bathroom stays comfortable and dry. These models usually require professional installation, so keep that in mind when making your purchasing decision.

Portable Dehumidifiers These small units are perfect for bathrooms with limited space or budget constraints. Portable units are designed to be placed inside any room without a need for additional ventilation or ductwork. They come in a variety of shapes and sizes to fit virtually any budget and space limitation. Portable dehumidifiers can be found in both standalone and wall-mounted varieties, so depending on what fits best in your bathroom you have plenty of options!

In-line Dehumidifiers In some cases, an inline dehumidifier may be best for dealing with excess humidity in a bathroom setting. These models are installed inside the ductwork that ties into a central air conditioning system – making them ideal for large networks of air conditioners found in commercial settings or larger areas with multiple bathrooms connected together. An inline system is configured precisely to target excess moisture build up within a given area while also boosting efficiency of overall climate control measures within the building its used in!

Refrigerant dehumidifiers

Refrigerant dehumidifiers are some of the most popular options for bathrooms, and also the most efficient. The working principle of these models is based on a cooling coil that collects the excess humidity from the air, condensing it and converting it into water. This internal system cools down the air inside the bathroom, eliminating dampness and avoiding possible damage due to moisture.

Refrigerant dehumidifiers come with different settings depending on their capacity. Generally speaking, they require very little maintenance and have a long-lasting lifespan – up to 10 years with regular care. They are also relatively quiet compared to other types of dehumidifiers, making them ideal for both small and large bathrooms because they won’t overwhelm your space with noise.

Desiccant dehumidifiers

Desiccant dehumidifiers, also known as chemical or silica gel dehumidifier, are an ideal solution for bathrooms where moisture is a problem. Rather than using condensation to absorb moisture like a traditional refrigerant apparatus would, desiccant dehumidifiers rely on a special chemical material known as a “desiccant” to absorb and filter moisture from the air. Desiccants can absorb more water vapor than conventional materials and come in various forms, including small bead like packets found in clothing bags or large blocks called “cake” which is often used in food storage applications.

Desiccants do not require cooling coils, so they are lightweight and less bulky than evaporative or condensing systems. Furthermore, desiccants do not produce cold air making them ideal for use in bathrooms that many times require heating. Desiccant dehumidifiers can reduce humidity levels quickly and effectively making them great choices for bathrooms with both high relative humidity and low temperatures.

Before selecting a bathroom dehumidifier, it is important to consider factors such as size of the room, availability of power outlets, cost of operation/maintenance and noise levels generated by the unit. In most cases users should seek out energy-efficient models with adjustable speed settings that will provide maximum performance at minimum cost to the user. It should be noted that although desiccants tend to be lighter weight the amount of water they will pull from an environment is less than evaporative or condenser types so those seeking high humidity reduction should consider those systems first before selecting a desiccant-type model for their bathroom needs.

Placement and Maintenance

Placement is one of the most important factors when choosing a dehumidifier for your bathroom. Before you buy, consider how much space you have available to place it and how visible the dehumidifier will be during use. You may want to avoid large, unattractive models if you want it to blend in with the decor. When you install the dehumidifier, keep it away from direct sunlight or near any heating or cooling vents that might affect its functionality.

When placing a dehumidifier in your bathroom, ensure that there is adequate air circulation since some models need plenty of space around them to work effectively. Additionally, make sure to follow the manufacturer’s recommendations on placement and cleaning regularly, paying close attention to any special maintenance instructions such as emptying water tanks and changing filters as instructed. With proper placement and routine maintenance, you can increase the lifespan of your bathroom dehumidifier and enjoy fresher air in all rooms of your home!

The 6 Best Dehumidifiers For In the Bathroom [2023]

Ideal placement for bathroom dehumidifiers

When choosing the ideal placement for a bathroom dehumidifier, there are several considerations to bear in mind. First and foremost, ensure that the unit can be positioned in a place that it will not be obstructed or out of reach. It should also be placed away from sources of heat or moisture, such as showers and baths.

The unit should also be placed at least two feet away from any walls or other obstacles in order to allow for adequate air circulation. Ideally, you want to allow it to suck up as much air as possible without creating an airflow obstruction. This will maximise its humidity-reducing capabilities.

It is best to place your dehumidifier near your bathroom ceiling fan if you have one installed. As the fan circulates air throughout the room, it will help to expel the moist air out of your bathroom more quickly while increasing its capacity. You should also make sure that there is sufficient space around all sides of your device to ensure efficient operation.

Budget Considerations

When it comes to budget considerations, the price of a bathroom dehumidifier will vary greatly depending on its size, type, branding and features. Smaller units start at around $50 while larger units can range up to $400 or more. Additionally, many bathroom dehumidifiers come with built-in air purifiers, water removal tanks and/or humidity gauges that may add to the unit’s cost but also increase its functionality.

People living in high-humidity climates or in damp environments should keep in mind that these more expensive options may be worth the extra money due to their added capability of removing more moisture from the room. It’s important to remember that a unit with a larger capacity can usually cover a bigger space than one with a smaller capacity—so consider this when budgeting for your purchase.

Furthermore, before settling on any model or brand, make sure to read customer reviews and compare prices between different retailers so you’re getting both quality and value for your money.

Balancing cost and features

When shopping for a bathroom dehumidifier, it’s important to consider the cost and features available. While the cost should be weighed against features such as energy efficiency, capacity, and noise level; the higher quality units tend to come with a higher price tag.

It is also important to choose a unit that will be appropriate for the size of your bathroom. Large bathrooms may require more powerful dehumidifiers while small bathrooms might be able to get away with more basic models.

When considering energy efficiency, look for features such as low wattage use or timers and humidistats that allow you to control when the dehumidifier is on or off, thereby reducing energy consumption over time.

Finally, it’s important to check for noise levels before making your purchase – many units are designed with noise reduction components such as insulated cabinets or mute modes in order to keep sound levels down and provide a comfortable environment.

With a bit of research, careful consideration of all elements involved – including budget – you can find the perfect unit for your home.

Reviews and Recommendations

Reviews and recommendations are a great way to determine which dehumidifier is right for you. Read through online reviews of different models and investigate ratings by industry experts. Compare functionality, noise levels, and energy efficiency to determine which model best fits your needs. It can also be helpful to ask friends or family members who have personal experience with a particular dehumidifier model.

In addition to reviews, check the availability of replacement parts and the company’s expected service life of their products. The better brands tend to have longer expected lifespans due to their higher quality construction materials and superior engineering designs. It’s also wise to compare the coverage offered by your warranty before making a decision on a purchase so that you can be sure that you are choosing the right model for your needs.

Top-rated bathroom dehumidifiers on the market

A bathroom dehumidifier is an essential appliance for any humid bathroom, as it helps to maintain comfortable humidity levels and prevents mold from forming. There are many different types of dehumidifiers on the market, each with its own unique features, so it’s important to understand how to make a wise purchase decision. This guide will provide information on some of the top-rated bathroom dehumidifiers on the market today.

When choosing a dehumidifier for your bathroom, you’ll want to consider a few factors first. First, decide if you need a standalone model or one that can be easily attached to an existing ducted system. If you opt for a ducted system, you’ll also have to consider its size and power capacity in order to ensure it can handle your specific needs.

It is also important to take into account the features available in each model. Factors such as adjustable humidity sensors, digital displays and alarms can be useful when trying to keep humidity levels in check and make sure moisture levels stay within desirable ranges. You may also want to consider models that come with auto restart capabilities so they can restart automatically if power outages occur. Additionally, if you are looking for energy efficiency you will want to select models that carry Energy Star ratings or those with Smart-Home technology that allow the user remote activation and programmable controls for convenient energy savings and environmental safety regulations compliance.

In maintaining your home’s optimal balance of comfortable humidity levels while preventing mold formation in bathrooms or other moisture-prone areas read through this guide of top rated bathroom dehumidifiers on the market today; ensuring you get the right appliance tailored precisely for your needs!

How to Choose a Dehumidifier That's Right for Your Home — Bob Vila


In conclusion, choosing the right bathroom dehumidifier can be a difficult task. It is important to consider all of the factors discussed in this guide, such as humidity level, size, noise level, energy efficiency and storage capacity. Additionally, pay attention to the features that are important to you in order to ensure you select a dehumidifier that fits your needs and budget.

With the right information and help from an HVAC professional and home improvement expert, your bathroom will be comfortable and dry no matter what season it is.


How do I choose a bathroom dehumidifier?

When choosing a bathroom dehumidifier, consider the size of the bathroom, the level of humidity, and the features you need. Look for a dehumidifier with a small tank that can fit in your bathroom, and choose a model with an automatic shut-off feature to avoid spills.

What size dehumidifier is best for bathroom?

The best size dehumidifier for your bathroom depends on the size of the room and the level of humidity. A dehumidifier with a capacity of 30 to 50 pints is typically suitable for most bathroom sizes.

How do I know what size dehumidifier to buy?

To determine what size dehumidifier to buy, consider the square footage of the room you want to dehumidify and the humidity level. Use a dehumidifier sizing chart or consult with a professional to help you choose the right size.

What is the best percentage for a dehumidifier?

The ideal humidity level for a dehumidifier is between 30% and 50%. This level helps prevent the growth of mold, mildew, and bacteria.

Should you use dehumidifier in bathroom?

Yes, using a dehumidifier in the bathroom can help prevent the growth of mold and mildew by reducing the moisture in the air. It can also improve the overall air quality and prevent damage to walls and fixtures.

What is recommended bathroom humidity?

The recommended humidity level for a bathroom is between 30% and 50%. Any level above this range can promote the growth of mold and mildew.

Do dehumidifiers use a lot of electricity?

The electricity usage of a dehumidifier depends on its size and features. Generally, smaller units use less electricity, but all dehumidifiers are designed to be energy-efficient.

Is a 10 Litre dehumidifier big enough?

A 10-liter dehumidifier may be suitable for a small bathroom or a room with low humidity levels. However, for larger bathrooms or areas with high humidity levels, a larger capacity dehumidifier may be necessary.

What happens if dehumidifier is too big?

If a dehumidifier is too big for a room, it may remove too much moisture too quickly, which can cause the air to become too dry. This can lead to discomfort and health issues, such as dry skin, nasal irritation, and respiratory problems.

How many ml dehumidifier do I need?

The required capacity of a dehumidifier is measured in pints per day (PPD) or liters per day (LPD) and is based on the size of the room and the humidity level. Consult with a professional or use a dehumidifier sizing chart to determine the appropriate capacity for your needs.

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