How to Choose the Right Dehumidifier

Too much moisture at home isn’t just uncomfortable—it can lead to visible dampness, mould growth, and even structural damage. Common signs include condensation on windows, a musty smell in certain rooms, or laundry that takes forever to dry, especially when it’s chilly and windows stay shut.

We’ve put together a complete guide to help you find the right dehumidifier. Here, we cover everything from the types of units and room sizing to essential features and energy efficiency.

Link to Dehumidifiers Explained: How They WorkDehumidifiers Explained: How They Work

A dehumidifier pulls in damp air, cools it down to condense the moisture, and collects the water in a tank or drains it away. Afterward, the dry air is recirculated back into your space.

Here’s a quick overview of the main types:

• Compressor Dehumidifiers: These work much like air conditioners, using cold coils to condense moisture. They’re best suited for temperatures above 15°C, making them ideal for most homes. However, they’re less effective in spaces cooler than 15°C, like basements.

• Desiccant Dehumidifiers: These use a chemical to absorb moisture, making them perfect for colder, unheated areas such as basements and garages. They also release warm air, which can be a nice bonus in chilly rooms.

• Peltier (Thermo-Electric) Dehumidifiers: Small and simple, these are good for compact areas like closets, boats, or caravans. While they’re not as powerful, they’re handy for minor humidity problems in small spaces.

For more detail on each type, check out our article on types of dehumidifiers.

Link to Choosing the Right Dehumidifier: Step-by-StepChoosing the Right Dehumidifier: Step-by-Step

Link to 1. Evaluate Your Room’s Size and Moisture Level1. Evaluate Your Room’s Size and Moisture Level

When choosing a dehumidifier, consider both the room’s size and humidity level. Dehumidifiers are rated by how many litres of moisture they can extract per day. Choosing the right size keeps the unit efficient and your electricity costs down.

Here’s a quick guide based on dampness level:

For an even more precise recommendation, use our [Dehumidifier Size Calculator] to estimate the capacity based on your room’s size and moisture conditions.

Link to 2. Decide Where to Use the Dehumidifier2. Decide Where to Use the Dehumidifier

Your home’s conditions will help determine which model works best:

• Living Spaces: For heated areas like bedrooms, living rooms, or kitchens, compressor dehumidifiers are usually the most energy-efficient. Some good options are the PureMate 20L and Meaco Arete One 25L.

• Cooler Areas: For unheated spaces like garages or basements, desiccant dehumidifiers perform better, as they don’t rely on cold coils and work well even in lower temperatures.

Link to 3. Features to Look for in a Dehumidifier3. Features to Look for in a Dehumidifier

Today’s dehumidifiers come with many options designed to improve convenience and efficiency. Here’s what to consider:

• Humidistat Control: Lets you set a target humidity level, automatically turning the unit on or off to maintain it. Some models, like the Meaco Arete One 25L, offer advanced controls.

• Automatic Shut-Off and Drainage Options: Don’t want to empty the water tank? Look for a continuous drain option, allowing water to empty directly into a drain. Automatic shut-off prevents spills by stopping the unit when the tank is full. Check out models like the PureMate 20L and Pro Breeze 30L Smart Dehumidifier for these features.

• Laundry Mode: Perfect for households that dry washing indoors. Units with this feature, like the PureMate 20L and Pro Breeze 30L Smart Dehumidifier, can help speed up drying times.

• Noise Level: If you’re planning to use a dehumidifier in a bedroom, noise is a factor. Aim for models operating under 50 decibels, such as the EcoAir DD1 Classic MK6 and MeacoDry Arete® One 12L Dehumidifier.

• Defrost Mode: Essential for use in colder rooms, this feature keeps the unit from freezing up when temperatures drop.

• Mobility: Moving the unit between rooms? Go for models with wheels and a handle, like the PureMate 20L and MeacoDry Arete® One 12L Dehumidifier, both of which are compact and easy to transport.

Link to Energy EfficiencyEnergy Efficiency

Running costs are a key consideration. Our energy cost calculator can help estimate daily running costs based on wattage and electricity rates.

Typically, compressor dehumidifiers are more energy-efficient, especially in warmer conditions. For colder rooms, desiccant models may consume more energy but can also reduce heating needs by releasing warm air.

Link to Dehumidifier Placement TipsDehumidifier Placement Tips

Placement can make a big difference. A central spot, like a hallway, helps pull moisture from multiple rooms, or place it directly in problem areas, like a musty basement. Leave 30 cm of space around the unit to ensure airflow and avoid blocking it with furniture.

Link to Choosing Between BrandsChoosing Between Brands

The market is full of choices. Here’s a quick look at a few popular brands:

• Meaco: Known for energy-efficient and quiet models, ideal for bedrooms or living spaces. Check out our review of the Meaco Arete One 25L Dehumidifier.

• Pro Breeze: A versatile brand offering both compressor and desiccant models, often with convenient features like laundry modes and smart humidistat controls. See our review of the Pro Breeze 30L Smart Dehumidifier.

• Ebac: Designed for the UK climate, these models perform well in cooler conditions, such as basements and conservatories.

• De'Longhi: Known for durability and dependable performance, with options like electronic controls and low noise. For details, see our review of the De'Longhi DEX214F Dehumidifier.

Link to Common Questions About DehumidifiersCommon Questions About Dehumidifiers

Link to Can a Dehumidifier Be Too Big?Can a Dehumidifier Be Too Big?

Yes, using a dehumidifier that’s too large can be wasteful on energy and make the air uncomfortably dry. Use a dehumidifier size calculator to find the best fit.

Link to Setting the Ideal Humidity LevelsSetting the Ideal Humidity Levels

Aim for 30-50% humidity in your home. During winter, keeping it around 40% helps prevent condensation on windows. If your dehumidifier doesn’t have a humidistat, use a hygrometer to keep an eye on levels.

Link to When Is the Best Time to Use a Dehumidifier?When Is the Best Time to Use a Dehumidifier?

Autumn and winter are typically best for managing indoor humidity, though year-round use may be needed in damp areas. Many models also have a laundry mode to help with drying clothes indoors on rainy days. For a model with laundry mode, consider the Duux Bora Smart Dehumidifier or MeacoDry Arete® One 12L Dehumidifier.

Link to Wrapping UpWrapping Up

Finding the right dehumidifier doesn’t need to be complicated. By matching the unit to your room size, conditions, and preferred features, you’ll get a model that keeps your home comfortable and free from dampness. Plus, focusing on energy efficiency can help keep those electricity costs in check!