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The Ultimate Dehumidifier Buying Guide

Humidity is an essential factor affecting our living spaces' comfort levels, but too much humidity can cause problems such as mould, mildew, and even respiratory issues. This is where a dehumidifier comes into play, providing a solution for excess moisture in your home or office.


Dehumidifiers come in different sizes, types, and models, so choosing the right one that fits your needs is important. Some models are designed for small rooms, while others are suitable for larger spaces. There are also portable dehumidifiers that can be moved around easily, and whole-house dehumidifiers that are installed in your HVAC system.


In this article, we'll explore the types of dehumidifiers available, which types of dehumidifiers you might find in our DID stores nationwide, their features and benefits, and how to choose the right one for your needs. Whether you're looking to buy a dehumidifier or simply curious about what they can do, this guide will provide you with all the information you need to make an informed decision.

What is a dehumidifier?

A dehumidifier is an essential household appliance that helps reduce the amount of moisture in the air, making the environment more comfortable and healthier. Dehumidifiers work by removing excess humidity from the air, preventing mould and bacteria growth, and reducing the risk of health problems caused by poor air quality.


Dehumidifiers are particularly useful in areas with high levels of humidity or dampness, such as basements, bathrooms, and laundry rooms. They can also be used to prevent damage to furniture, clothes, and other household items caused by excess moisture.


Different types of dehumidifiers are available on the market, including portable and whole-house units. Portable dehumidifiers are small, easy to move around, and ideal for small spaces. They come in different sizes, with different capacities to suit different needs. Whole-house dehumidifiers, on the other hand, are installed in the HVAC system of a house and can dehumidify the entire house.

Dehumidifiers are also available in different styles, including refrigerant, desiccant, and electronic dehumidifiers.

  • Refrigerant dehumidifiers use a compressor to cool the air, causing the moisture to condense and collect in a tank or drain.
  • Desiccant dehumidifiers use a desiccant material to absorb moisture from the air.
  • Electronic dehumidifiers use an electric current to remove moisture from the air.

In summary, dehumidifiers are essential appliances for creating a comfortable, healthy, and safe living environment. They come in different types, styles, and sizes to suit different needs, and choosing the right one will depend on the space you need to dehumidify and your personal preferences.

How Dehumidifiers work

The process of dehumidification can be confusing for some, so we want to explain it in plan and simple terms for you. Here is a 5 step process on how dehumidifiers work:

  • Dehumidifiers draw in air through a filter to remove airborne particles and allergens.
  • The air is then passed over cold coils, which causes moisture in the air to condense into droplets.
  • The water droplets are then collected in a tank or drained away through a hose.
  • The dehumidifier's fan then blows dry air back into the room, reducing the overall humidity level.
  • This process helps prevent mould, mildew, and bacteria, making the environment more comfortable and healthier to live in.

5 Reasons to Buy a dehumidifier

We could list endless reasons why you should buy a dehumidifier, but here are 5 of the main reasons we feel like a dehumidifier might be a good investment for you:


  1. Reduces the risk of mould and mildew growth: High humidity levels can cause mould and mildew to grow, which can be harmful to your health and cause damage to your home. A dehumidifier reduces the level of moisture in the air, making it less hospitable for mould and mildew to thrive.
  2. Improves air quality: High humidity can also cause musty odours, making the air feel heavy and uncomfortable. A dehumidifier helps to improve air quality by reducing humidity levels and removing allergens such as dust mites and mould spores from the air.
  3. Protects your home and belongings: Excess moisture in the air can cause damage to your home and belongings, such as warping wooden furniture or causing paint to peel. A dehumidifier helps to protect your home and belongings by reducing moisture levels.
  4. Increases energy efficiency: Air conditioning systems have to work harder in high humidity, which can lead to higher energy bills. A dehumidifier reduces the amount of work your AC has to do, which can lead to lower energy bills.
  5. Creates a more comfortable living environment: High humidity can cause discomfort, making it harder to sleep and relax. A dehumidifier helps to create a more comfortable living environment by reducing humidity levels and keeping the air fresh and dry.

If you like the sound of using a dehumidifier in your home after reading this, then perhaps you could check out our collection of dehumidifiers and air purifiers here at DID. Feel free to pop into our stores across Ireland or order one from the collection online for click and collect or fast and efficient delivery.

Dehumidifers and Energy Savings

Many households are looking to reduce their energy bills. While changing to LED bulbs, investing in an air fryer and upgrading to energy-efficient appliances is a great way to start, we need to think of innovative ways to reduce our bills.


So at DID, we have created an energy-saving bundle! As an alternative to your tumble dryer, this Beldray drying rack and dehumidifier are a great combination for getting your clothes dry on a rainy day while keeping the costs down. It's perfect for compact homes with no garden space. It is also a great alternative to drying on your radiators, which greatly increases your energy bills and can cause warping issues for doors and wooden flooring in your home. 


Check out more energy saving tips in our Blog.

Dehumidifier FAQs

How do I know if I need a dehumidifier?

If you notice condensation on windows or walls, musty odours, or if you or your family members are experiencing allergy symptoms, such as sneezing or coughing, you may benefit from a dehumidifier. Additionally, if your home feels uncomfortable or damp, a dehumidifier can help to create a more pleasant living environment.

How often should I empty the water tank?

The frequency of emptying the water tank depends on the tank size and the humidity level in your home. In general, you should check the tank every few days and empty it when it is full. Some dehumidifiers also come with a hose attachment, allowing you to drain the water away without emptying the tank.

Can a dehumidifier help with my allergies?

Yes, a dehumidifier can help to reduce the number of allergens in the air, such as dust mites, mould, and mildew. By reducing humidity levels, a dehumidifier can help make the environment less hospitable for these allergens, alleviating allergy symptoms.

Can a dehumidifier replace an air conditioner?

While a dehumidifier can help to reduce humidity levels, it is not designed to cool the air like an air conditioner. If you live in a hot and humid climate, you may need both a dehumidifier and an air conditioner to keep your home comfortable. However, using a dehumidifier can help reduce the workload on your air conditioner, leading to lower energy bills.

How do I clean my dehumidifier?

Regular maintenance and cleaning of your dehumidifier is important to ensure optimal performance. Follow the manufacturer's instructions for cleaning and replacing filters, and empty the water tank regularly.

How often should I run my dehumidifier?

The frequency of use depends on the level of humidity in your home. It is recommended to run your dehumidifier as needed, especially during periods of high humidity or when you notice condensation on windows or walls.

Where should I place my dehumidifier?

It is best to place your dehumidifier in a central location in the room, away from walls and furniture, to ensure maximum airflow.

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