Do Space Heaters Dehumidify? Exploring Their Moisture-Reducing Abilities.

No, space heaters do not dehumidify. They only provide heat and increase the temperature within a room.

While some space heaters may reduce the relative humidity by a small amount, they are not effective dehumidifiers. Space heaters are an efficient way to provide extra heat in the winter months. However, homeowners may be wondering if these devices can also help reduce the humidity levels in their homes.

While some may believe that space heaters have the added benefit of being a dehumidifier, this is not the case. Space heaters only provide heat and do not have the capability to remove moisture from the air. In this article, we will discuss the differences between space heaters and dehumidifiers, how they work, and why it is important to maintain the proper humidity levels in your living space.

Do Space Heaters Dehumidify? Exploring Their Moisture-Reducing Abilities.


How Space Heaters Work And Their Impact On Humidity

Space heaters have been around for a long time, and they are, without a doubt, a useful tool for warming up a room. But have you ever considered using a space heater to manage your home’s humidity level? We’ll explore the ins and outs of how space heaters can impact the humidity level of the room they are used in.

Explanation Of Space Heaters And Their Types That Use Air As A Medium To Transmit Heat

Space heaters are devices that generate heat and radiate it into the surrounding environment, thereby increasing the temperature in a room. There are three primary types of space heaters: electric, propane, and kerosene. Each of these space heaters uses a different method to generate and distribute heat.

Electric heaters are the most common type of space heater. They come in various shapes and sizes, from portable units that can easily be moved from room to room to larger, fixed installations. These heaters work by converting electrical energy into heat, which is then transferred to the surrounding air.

Propane and kerosene space heaters, on the other hand, use a flame to produce heat. Propane heaters are particularly useful for outdoor spaces and poorly insulated garages because they are relatively easy to set up and use. Kerosene heaters are similar to propane heaters, but they require a fuel source and are not ideal for indoor use because they produce pollutants that can be harmful if not adequately ventilated.

Overview Of The Differences Between Dehumidifiers And Space Heaters

Dehumidifiers and space heaters are two very different devices. A dehumidifier is a device that is specifically designed to reduce the humidity level in a room. It works by removing excess moisture from the air and collecting it in a water tank or draining it out of the building.

A space heater, on the other hand, is designed to increase the temperature of the air in a room. While a space heater may have some impact on the humidity level of a room, its main function is to provide heat.

How Space Heaters Can Increase Or Decrease The Humidity Level In A Room

Space heaters can impact the humidity level in a room in several different ways. For example, if a space heater is used in a room with high humidity, the heat from the heater can cause the moisture to evaporate from the air, thereby reducing the humidity level.

Alternatively, if a space heater is used in a dry environment, it can increase the humidity level by causing moisture to evaporate from nearby surfaces like curtains and carpets and into the air.

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Key Factors That Determine The Impact Of Space Heaters On Room Humidity

Several factors determine the impact a space heater can have on a room’s humidity level. Some of these factors include:

  • The type of space heater that is used.
  • The humidity level of the room before the space heater is turned on.
  • The size of the room in which the space heater is being used.
  • The ventilation of the room.
  • The presence of any damp surfaces or materials in the room.

Overall, while a space heater may not be the most effective way to manage your home’s humidity levels, it can be useful in certain situations. By understanding how they work and how they impact humidity levels, you can use these devices to your advantage and create a comfortable environment in your home.

Understanding The Science Behind Dehumidification

Space heaters are a cost-effective and convenient method to help heat up your home. In addition to warming up an area, there is a common belief that space heaters can also reduce the moisture levels in the air, a process known as dehumidification.

This claim has resulted in one of the primary reasons why people purchase space heaters, but is it true? In the following sections, we will explore the science behind dehumidification and whether space heaters are effective in reducing moisture content in the air.

Dehumidification is the process of eliminating or reducing the moisture levels in the air. This helps in providing a healthier living environment and prevents the growth of mould and bacteria that thrives in a humid atmosphere. The temperature inside the room plays a crucial role in determining the humidity levels.

The higher the temperature, the more moisture the room will contain. As warm air can hold more moisture than cold air, the room might feel more humid when warm air is trapped inside.

Explanation Of The Process Of Dehumidification & How It Impacts Humidity Levels

There are primarily three ways in which water is removed from the air, namely refrigeration, absorption, and adsorption. Refrigeration is the most common type of dehumidification process that uses an air conditioner or a fridge. It cools the air leading to moisture condensation that drips down and gets collected in the water reservoir.

Many dehumidifiers use a similar process.

The absorption process is used to remove moisture from the air through a process known as desiccant dehumidification. Desiccants are materials that absorb moisture. These materials can be in the form of silica gel, activated alumina, or other adsorbent materials.

Adsorption works in a similar way as absorption, but the process is reversed. The water in the air is attracted using adsorbent materials, which can be in the form of aluminium oxide, activated carbon, or silica gel.

How Water Is Removed From The Air: Refrigeration, Absorption, And Adsorption

Space heaters work on a principle of converting electricity into heat through resistive heating elements. They do not come with a dehumidification feature, and their primary purpose is to warm up the room. Although space heaters make the room feel warmer, they do not reduce the humidity levels in the air.

This is because they do not have a built-in evaporator coil or a moisture collection chamber, which are essential features of a dehumidifier.

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Is Space Heater Dehumidification Effective?

As we have learned, space heaters do not have any built-in dehumidification features, and therefore they are not designed to reduce moisture levels in the air. Using a space heater with the expectation of dehumidifying the air can lead to disappointment and affect the device’s longevity.

Therefore, it is always recommended to use a dehumidifier if the primary goal is to reduce moisture levels in the air.

Limitations Of Space Heaters In Reducing Moisture Content In The Air

Although space heaters do not have any dehumidification feature, they are excellent devices for warming up small areas. However, some of the limitations of space heaters in reducing moisture content in the air are:

  • They can’t reduce moisture levels in the room effectively.
  • They might increase the room’s relative humidity levels, making it feel more humid inside.
  • They can cause dampness in the room, especially if the room is poorly ventilated.
  • They can potentially cause electrical hazards if not used correctly and can lead to malfunctioning of electrical sockets and fires if not adequately maintained.

Space heaters are a convenient and efficient way to warm up small areas. However, if the goal is to reduce moisture levels in the air, a dehumidifier is the most practical and effective option. Understanding the science behind dehumidification and the limitations of space heaters is essential to create a healthy living environment.

Practical Tips And Strategies To Reduce Humidity Using Space Heaters

Do Space Heaters Dehumidify? Exploring Their Moisture-Reducing Abilities

Are you tired of that clammy feeling that comes with high humidity in your home? If you are, you might be wondering whether space heaters are effective in reducing moisture. This article will examine whether space heaters can help to reduce humidity and provide practical tips for using them effectively.

Recommended Space Heater Types For Moisture Reduction

Not all space heaters are created equal when it comes to moisture reduction. Some models work harder than others to keep your space dry. Here are some space heaters to consider if you’re looking to reduce moisture in your home:

  • Ceramic space heaters: These heaters use ceramic plates to generate heat, which is then circulated around the room by a fan. They are efficient and effective in reducing humidity.
  • Dehumidifying space heaters: As the name suggests, these heaters focus on both warming and dehumidifying the air. They are equipped with built-in dehumidifiers that extract moisture from the air and release warm, dry air into the room.
  • Forced-air space heaters: These heaters blow hot air into the room, which can help to reduce humidity by increasing air circulation.

How To Select The Right Space Heater For Your Moisture Reduction Needs

When selecting a space heater to reduce moisture, there are certain factors to consider to ensure that you choose the right model for your needs. Here are some things to keep in mind:

  • Room size: The size of your room will play a crucial role in determining the type and size of space heater you should buy. A larger room will require a more powerful heater.
  • Temperature control: Choose a space heater with adjustable temperature controls. This allows you to change the temperature according to your needs, which can help to reduce humidity.
  • Safety features: Space heaters can pose fire hazards when not used properly. Look for a model with safety features like overheat protection and tip-over switch.
  • Energy efficiency: Choose an energy-efficient model to reduce your energy bills while reducing moisture in your home.
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Common Mistakes To Avoid While Using Space Heaters To Reduce Humidity In A Room

While space heaters can be effective in reducing humidity, there are some common mistakes that can compromise their efficiency. Here are some mistakes to avoid:

  • Using a space heater as the sole source of heat in the room: Space heaters are designed to supplement existing heating systems, not replace them entirely. Using a space heater as the primary source of heat can cause it to work harder than it should, reducing its lifespan and efficiency.
  • Placing the space heater near walls or furniture: Objects placed near the space heater can interfere with air circulation, reducing its effectiveness.
  • Leaving the space heater unattended: Space heaters should never be left unattended. Ensure that you turn them off when leaving the room or going to bed.
  • Using the space heater in a damp environment: Space heaters should never be used in wet or damp environments like bathrooms or laundry rooms. This can cause damage to the heater and pose a fire hazard.

Best Practices For Using Space Heaters In Reducing Moisture Content In Your Home

Here are some best practices to keep in mind when using space heaters to reduce moisture content in your home:

  • Use a humidifier: Using a humidifier in conjunction with your space heater can help to maintain optimal humidity levels in your home.
  • Don’t rely on space heaters as the sole source of heat: Space heaters should only be used to supplement existing heating systems.
  • Position the space heater properly: Place the space heater in an open area for proper air circulation.
  • Keep the space heater away from flammable objects: Avoid placing the space heater near curtains or bedding.
  • Clean the space heater regularly: Dust buildup can compromise the efficiency of the space heater, reducing its effectiveness.

Space heaters can be effective in reducing moisture in your home. By choosing the right type of space heater, avoiding common mistakes, and following best practices, you can improve the comfort of your home while reducing humidity.


Based on the research and information discussed in this blog post, it is evident that space heaters do not dehumidify the air in a room. Although they can slightly lower the relative humidity, they are not designed to remove excess moisture from the air.

Therefore, it is important to use a dehumidifier if you are experiencing high levels of humidity in your home. It is also essential to consider the size of the dehumidifier you need and its energy efficiency rating. This will not only ensure that your home is comfortable, but also that you save on energy costs.

Additionally, when using a space heater, it is important to follow safety guidelines and never leave it unattended or use it in a small, enclosed space. By understanding the limitations of space heaters and utilizing the appropriate tools, you can maintain a comfortable and healthy indoor environment.


I am a mechanical engineer and love doing research on different home and outdoor heating options. When I am not working, I love spending time with my family and friends. I also enjoy blogging about my findings and helping others to find the best heating options for their needs.