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Places where it’s appropriate to find mould: in Penicillin or your favourite blue cheese. Places where it’s not appropriate to find mould: any place indoors, including your home. If you’ve got a damp or mouldy home, experience hot humid summers or cold wet winters, or simply want to dry clothes inside occasionally, a dehumidifier could be your new best friend.
Unlike a humidifier which adds moisture, the best dehumidifier draws moisture out of the air, helping to prevent mould and quickly and efficiently drying your home. It’s also easy to use thanks to a range of handy features, like a timer and different power levels. Here’s our guide to the best dehumidifiers in Australia, drawn from hours of research into expert testing and real consumer insights.
How we picked
Our first stop was CHOICE, Australia’s leading consumer advocacy group. They’ve tested a range of dehumidifiers and gave us an idea of how some of them performed in a test environment.
But we wanted to know how they performed in real Aussie homes. For that, we turned to ProductReview.com.au, Australia’s first consumer opinion website. We looked for dehumidifiers that got great reviews (ideally, 4 stars or more) from a good number of reviews (30 plus).
Between those sources, we got a range of contenders.
To narrow them down, we focused on features, including how much moisture they claimed to extract from the air daily, ease of use and handy things like timers. Bonus points were given to those that were Sensitive Choice programme approved. This programme was set up by the National Asthma Council Australia to help consumers identify asthma and allergy-aware products.
We felt getting the tick from this programme meant that the dehumidifiers would do a good job at improving your home environment by helping to remove asthma and allergy-triggering allergens, preventing mould and mildew and reducing things like mould spores and dust mites. If air quality is a concern for you, check out our guide to Australia’s best air purifiers.
This guide covers both refrigeration and desiccant dehumidifiers. Refrigeration dehumidifiers draw air in, filter it and cool it to condense the moisture. Then they reheat it and push warmer, dryer air back into the room. These models work best in hot and humid conditions. That’s because hotter air is easier to cool and extract moisture from. Which means refrigeration dehumidifiers may be the best choice for Aussie homes.
Desiccant (or absorption) dehumidifiers use absorbent material to extract water from the air. The damp section then goes through a drying process, usually a heating element. This evaporates the water and collects it in the tank. Currently, desiccant dehumidifiers are thought to be less energy efficient than refrigeration ones. They suit cold spaces best, like unheated basements.
Best dehumidifier for most
Choose this if
Effective, convenient and easy to use - the Ausclimate NWT Large 35L has it all. Removing up to 35L of moisture daily, it’s crammed with features, including a huge 6L water tank, LCD display, 12-hour timer and auto defrost. It comes with a 2-year warranty from a family-owned Aussie company.
What we love
35L extraction daily
Capable of extracting 35L of moisture from your home’s air daily, it’ll help keep your home warm and dry.
Large coverage area
It can be used in rooms up to 50m2.
Extra-large water tank
At 6L, you won’t be emptying the water tank every few hours.
Continuous drainage feature
With the included 1m drainage hose, you can connect it to an outlet for easy draining and no water tank emptying.
Easy to move
Despite its size and weight, it’s easy to move thanks to its sturdy castor wheels and 2 handles.
Allows you to easily see the room temperature and humidity.
2 fan speeds
For when you need to boost its dehumidifying power.
Simply set and forget. The auto restart after a power failure means if you’ve set the timer, it’ll pick up where it left off when the power’s restored.
The full water tank auto shutoff means even if you forget to empty the tank, it’ll shut off automatically before it poses a risk.
For very damp and cold-feeling homes, this feature ensures the dehumidifier will continue to work effectively.
Which is impressively long for an electronic product.
Ausclimate is a family-owned Aussie business so you can feel like you’re supporting the local economy if you choose this.
Great consumer reviews
It gets almost 5 stars on ProductReview.com.au, with Aussies raving about its effectiveness and great customer service.
Sensitive Choice programme approved
Which means it’s a good choice for anyone with asthma or allergies.
The not so good bits
No cord storage
It might be easy to move around, but the cord might get in the way.
Which mean the air is only blown in 1 direction, rather than moved around the room.
When choosing a dehumidifier, you want one that’s effective, convenient and easy to use. We reckon the Ausclimate NWT Large 35L is a winner on all those counts. A large dehumidifier, it extracts up to 35L of moisture per day. This makes it suitable for rooms up to 50m2 or 125m3.
Its extra-large 6L water tank means it can go longer between you emptying it. It also offers a continuous drainage feature. There’s a 1m drainage hose included so the water can be emptied directly into an outlet. This saves you having to empty the water tank.
Because it’s a 35L dehumidifier, it’s quite large - 34cm (w) x 25cm (d) x 54cm (h). However, it comes with sturdy castor wheels and 2 handles for easy moving.
We like its full electronic controls with LCD display. This makes it easy to see at-a-glance what the dehumidifier is up to and for you to make changes. It includes the room temperature and humidity. You can also control the 2 fan speeds. Its other handy features include a 12-hour timer, allowing you to choose when it runs and doesn’t; an auto restart after a power failure; a full water tank auto shutoff; and auto defrost. This means the dehumidifier can work in cool indoor climates by thawing the ice that may form on its cold coils. Which might be useful for you if you have a very cold, damp home.
It comes with a 2-year warranty and has been reviewed by CHOICE. On ProductReview.com.au it has almost 5 stars and it’s Sensitive Choice programme-approved.
Bonus: Ausclimate is a family-owned Aussie company.
Best eco dehumidifier
Choose this if
For the same price as our winner, the Ionmax ION632 gives you more speeds and modes, automatic louvres, a built-in heater and silver nano technology. But you’re compromising on daily moisture removal (10L to our winner’s 35L), water tank size (3.5L to our winner’s 6L), and no LCD display.
What we love
It can remove moisture from large rooms up to 50m2.
Continuous drainage feature
With a 3.5L water tank capacity, you can get around frequent tank emptying with the continuous drainage feature. You need to buy the hose separately.
3 power levels
Allows you to dehumidify the room to your exact needs, including a turbo mode.
All dehumidifiers are good at drying your laundry but the Ionmax has a dedicated laundry mode for even better results.
If you’ve got a cold house, you might enjoy the built-in heater that puts some warmth back into the room.
For even air distribution. You can choose from 3 directions.
Set a 2-, 4- or 8-hour timer so it only runs when you need it to.
Including auto restart after a power cut and fall-down, water full and abnormal temperature detection.
Because it’s a desiccant dehumidifier, it uses a non-toxic, long lasting Zeolite disc.
Silver nano technology filter
Which helps prevent the growth of bacteria on the filter.
Visible water level
So you can see how full the tank is.
The not so good bits
No digital display
Which means you can’t see the room temperature or humidity. Its buttons are large and well-labelled, however.
Weighing around 8kg, there are no wheels for easy moving. You have 1 carry handle instead.
At over 50 decibels, it can be annoying if you’re watching TV, chatting or sleeping. To understand what this sounds like, most fridges’ constant humming run at 30-40 decibels.
Smaller water tank
The tank is 3.5L which could mean you need to empty it frequently.
Less moisture removal
Because it’s a desiccant dehumidifier, it can’t remove as much moisture as its refrigeration / compressor sister. You’re getting 10L per day.
Which isn’t great, considering it’s the same price as our Auclimate pick which offers a 2-year warranty.
A worthy alternative to our Ausclimate pick is the Ionmax ION632. Coming in at the same RRP (around $600), it’s similar in size (46cm (w) x 18.6cm (d) x 52cm (h) to the Ausclimate's 34cm (w) x 25cm (d) x 54cm (h)) but removes up to 10L of moisture per day. Our Ausclimate pick removes up to 35L. Like the Ausclimate it can handle large areas up to 50m2.
It has a 3.5L water tank, almost half the size of the Ausclimate's 6L. It does have an optional continuous drain feature to get around frequent tank emptying. You need to buy the hose separately.
It comes packed with features. This includes a turbo mode, laundry mode and a built-in heater. Its louvre is automatic, and you can choose which of 3 directions to point the air in. It has 3 power levels (auto, low and high) and a 2-, 4- or 8-hour timer. As you’d expect, it has good safety features too. These include auto restart after a power cut and fall-down, water full and abnormal temperature detection.
Although it’s around the same size as the Ausclimate, it weighs less (around 8kg). Which might explain why it doesn’t have wheels but does have a fold-down carry handle.
The Ionmax ION632 claims to have more eco credentials than our Ausclimate pick. This includes it being a desiccant dehumidifier rather than a refrigeration / compressor dehumidifier. It uses a non-toxic Zeolite disc rather than potentially environment-damaging refrigerants. According to Ionmax, this disc “regenerates itself in the dehumidifying process” meaning it doesn’t need ongoing maintenance.
It also has a silver nano technology filter which helps prevent the growth of bacteria on the filter, helping to improve your home’s air quality.
It’s recommended by CHOICE and, like the Ausclimate, has almost 5 stars on ProductReview.com.au.
Others worth considering
If you’ve got a large space or need to remove plenty of moisture, consider the Dimplex GDDE50E. It can remove 50L of moisture per day and boasts a 6.5L water tank. You’ll need space for it though. It comes in at 38.2cm (w) x 30.5cm (d) x 64cm (h) and weighs around 22kg. Thankfully it has wheels and in-built carry handles.
It’s packing a lot of features. This includes 3 pre-set modes (continuous, living room and bedroom), a 24-hour timer, auto defrost, tank full indicator and continuous drainage. It also has a filter wash reminder. This means you can remove the filter and clean it yourself – no need to buy replacement filters. The easy to use digital display lets you adjust the relative humidity between 30-80%.
It’s been reviewed by CHOICE but isn’t on ProductReview.com.au.
We originally reviewed the DeLonghi DD30P, but it's been replaced by the De'Longhi Aria Dry Compact 30L. The DeLonghi DD30P was the most expensive dehumidifier we reviewed at around $650 while the De'Longhi Aria Dry Compact 30L comes in around $100 cheaper, at RRP $550. It also had the largest tank of all the dehumidifiers we reviewed – 7L. The De'Longhi Aria Dry Compact 30L has a 4.5L capacity but they can both remove up to 30L of moisture each day.
Like the DeLonghi DD30P, the De'Longhi Aria Dry Compact 30L has got a 24-hour timer so you can set and forget. It's also got a clear digital display so you can manage the room temperature and humidity level, and a water level indicator so you can see at a glance how full it is. Plus, it has the same integrated castors to make moving it a breeze. They're also both Sensitive Choice programme approved.
So, how are they different? Well, the De'Longhi Aria Dry Compact 30L has 3 fan speeds, to the DD30P's 2. Although the DD30P has a removable and washable filter for easy maintenance, the De'Longhi Aria Dry Compact 30L's filter is an anti-dust filter which is specifically designed to remove allergens and pollutants. (If you're really keen on removing these things from the air, you might want to consider an air purifier.) Both have an antifreeze device which lets you use them in low temperatures. But the DD30P is suitable for use in temperatures as low as 5°, whereas the De'Longhi Aria Dry Compact 30L can work in temperatures down to 2°.
While both have a water level indicator, the De'Longhi Aria Dry Compact 30L has an in-built tank control system that automatically stops the appliance when the tank is full. No more worries about flooding your home if you pop away for the weekend and forget to switch the dehumidifier off. Finally, the De'Longhi Aria Dry Compact 30L has a dedicated laundry mode to help dry clothes quicker. We also like the large labelled buttons that make using it simple.
Another Ionmax, the ION612 offers less than our other Ionmax pick. This includes handling up to 7L a day, compared to the other one's 10L. Ionmax reckons it’s suitable for 20-30m2 rooms and it has a water tank capacity of 2L.
It has 4 relative humidity levels to choose from, including 40%, 60%, 80% and laundry mode. It also has 3 power levels: auto, low (quiet) and high. The louvres are automatic, and you can choose from 3 directions. There’s a water level indicator on both sides, an 8-hour timer and a continuous drainage option.
Like the other Ionmax, it has a silver nano technology filter to help prevent bacteria growth on the filter and the self-regenerating non-toxic Zeolite disc. Its safety features include auto restart after a power cut plus fall-down, water-full and abnormal temperature detection.
It comes with a 1-year warranty and is recommended by CHOICE. It has a huge 5 stars on ProductReview.com.au.
The Ausclimate NWT Medium 20L is the most affordable dehumidifier we reviewed, coming in at RRP less than $500. It’s also the top-rated dehumidifier currently on ProductReview.com.au, where it gets 5 stars.
As the name suggests, this is smaller than our Ausclimate top pick. It can remove 20L of moisture a day, compared to the other one's 35L. It suits a room up to 30m2, compared to 50m2. It has a water tank capacity of 3.5L, compared to 6L.
Otherwise, the features are the same: 2 fan speeds, LCD display for changing the room temperature and humidity, sturdy wheels and carry handles, auto shutoff, auto restart after a power cut, auto defrost and a 12-hour timer. It’s also been reviewed by CHOICE, is Sensitive Choice programme approved and comes with the same 2-year warranty.
A minor difference is that although it supports continuous drainage, you need to buy the hose separately.
The bottom line
The best dehumidifier helps your home become the haven you crave – warm, dry and damp- and mould-free. It hums along nicely with little input from you, either in the hours it operates or how often you need to empty it. It effectively removes moisture from the air without causing your power bill to rocket. It’s easy to use, with well-labelled buttons or a digital display, and easy to move thanks to sturdy wheels and handles.
We think the Ausclimate NWT Large 35L ticks all those boxes. It extracts up to 35L of moisture each day, making it suitable for rooms up to 50m2 or 125m3. Its extra-large 6L water tank won’t need to be emptied constantly. Although you can bypass that altogether with its continuous drainage feature and included 1m drainage hose. It has full electronic controls with LCD display, allowing you to easily control the room temperature and humidity. It comes with a range of features, including a 12-hour timer, 2 fan speeds, and auto restart, shutoff and defrost. Plus, Ausclimate is a family-owned Aussie company that’s renowned for its great customer service – it comes with a 2-year warranty.
The same price as our Ausclimate winner, the Ionmax ION632 is a good alternative. It removes up to 10L of moisture per day and is packing a 3.5L water tank, with an optional continuous drain feature. It has a turbo mode, laundry mode, built-in heater, automatic louvre, 3 power levels and an up to 8-hour timer. It also has a silver nano technology filter and uses a non-toxic, long-lasting Zeolite disc, boosting its eco credentials. It’s lacking our winner’s LCD display and it’s also noisier.
Features to consider
If you’re trying to find the best dehumidifier for you, consider these features.
Adjustable power or fan settings
All dehumidifiers should offer you different power or fan levels. This means if you’re trying to dry laundry inside, you can switch it to high for extra dehumidifying power.
Dehumidifiers can be heavy, especially when they’re full. Look for models that have in-built wheels and handles for easy moving. Cord storage is handy when you’re moving it too.
Water tank size
The bigger the tank, the bigger and heavier the dehumidifier. But also, the less times you’ll have to empty it. If space is a concern, look for a smaller tank. Try to avoid going any smaller than 4L, otherwise you’ll be emptying it a lot every day.
If emptying a water tank seems like a drag, see if you can find one with a continuous drain. This is ideal for a dehumidifier that you run for a long time in the same location, like the basement. Rather than having to empty it, a drainage hose will direct the collected water straight into a drain. Not all models come with a drainage hose, so you may have to buy one separately.
Big, well-labelled buttons
The best dehumidifier is easy to use. This is helped by big, well-labelled buttons.
For the ultimate in set-and-forget go for a model with a timer. The more expensive models offer an up to 24-hour timer. More affordable models go for set times, like 2, 4 or 8 hours. A timer means your dehumidifier will only run when you tell it too. This can save you energy and money.
If your dehumidifier is running and a power cut happens, auto restart will ensure it starts again when the power is restored. This keeps your dehumidifier running with minimal input from you.
What you get if you spend more
If you choose a more expensive option, you’ll probably get a bigger water tank capacity and a bigger daily moisture removal – up to 50L a day. You also might see these features.
If you live in a low-temperature area or your home is particularly cold and damp, auto defrost can be helpful. It thaws any ice that may develop on the coils and affect its performance.
Rather than dials and buttons, you might get an electronic display. This gives you at-a-glance info about the room the dehumidifier is running in. This normally includes the room temperature and humidity levels.
Heavy-duty pump system
Although most dehumidifiers have an optional continuous drainage feature, we only reviewed one with a heavy-duty pump system. That’s the DeLonghi DD30P, which is also the most expensive one we reviewed. Normally a continuous drainage feature is gravity-fed, which means the drainage pipe must flow down from the dehumidifier to work effectively. A heavy-duty pump system can work against gravity. Basically, you can feed the drainage pipe up from your humidifier. This is handy if you have a drain directly outside the room because you can feed the drainage pipe up and through your window.
You can change the power level on most dehumidifiers, but you can’t always set the target relative humidity for the room. More expensive dehumidifiers will let you choose a target humidity on a percentage scale, i.e. 30-70%.
All dehumidifiers have filters. Pay more and you might get a washable filter which helps you extend its life. Or you might get one with silver nano technology which helps prevent bacteria growth on the filter. This is claimed to help improve your home’s air quality. Only the 2 Ionmax models we reviewed offer this.
You don’t necessarily pay more for a desiccant dehumidifier, our Ionmax runner-up is the same RRP as our refrigeration dehumidifier top pick but they don’t have the same extraction power. So, our Ausclimate top pick can extract up to 35L of moisture a day. In comparison, the Ionmax extracts up to 10L of moisture a day.
- "Dehumidifiers: Why bigger is better", Canstar Blue
- "Dehumidifiers", Sensitive Choice
- "Refrigeration and airconditioning – Consumers", Australian Government Department of the Environment and Energy