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The tank size of the products on our list range from 1.8-4L, and the size you need will depend on a) whether your dehumidifier will be turned on all day, b) whether you’re at home and can empty it periodically, c) what level of humidity you’re dealing with, and d) how much space you have. Do I need a laundry mode? If you don’t want to think too hard about your usage, a device with an auto setting will be more efficient as it will only come on when the humidity levels go above your RH setting, saving you from wasting energy. How much does a dehumidifier cost to run? Remember that to maintain your dehumidifier’s airflow, you should never place it too close to a wall or any furniture, and ensure that you keep it away from electrics in case of leaks. What is the best time of day to use a dehumidifier? If you wake up in the morning and your bedroom has water droplets on the inside of the glass, this is an indication that your room has excess moisture that can have the potential for generating mold which could be dangerous to your health. Research your energy tariff and see if your electricity is cheaper at certain times, such as at night. If so, you could time it to come on during those hours. Alternatively, consider using it when your home is most likely to have high humidity levels, such as when you are showering, cooking or have the heating on.
There are two types of dehumidifier that you will need to choose between - desiccant and refrigerant. Desiccant dehumidifiers use a material that absorbs moisture and condenses it, while refrigerant dehumidifiers have a cool metal plate that converts the air into liquid as it works. While the former is capable of working in colder temperatures, it also uses more energy. As explained above, make sure you’re using your dehumidifier at times of day when it will be the cheapest and most effective. Does a dehumidifier use a lot of electricity? The advantages of this type of dehumidifier are that they tend to be larger, more energy efficient and much more widely available. The problem is that they don’t work well in lower temperatures as the coils need to be colder than the room, or they start to freeze. Once that happens, a compressor dehumidifier focuses on de-frosting itself over reducing humidity, so they aren’t a great option for garages or cellars. They also tend to be much noisier, and depending on your noise-level preference, this can irritate people. Should you leave a dehumidifier on all the time? Integrated cord storage This is handy for saving space when the dehumidifier isn’t in use, and removes the risk of tripping over a sprawling cable.
Simple and standard, the only additional feature is that you can choose between their four pre-set humidity levels to match your and your home's needs. All you’ll need to do is pop it in a corner and let it run, it costs around nine pence an hour so that it won’t break the bank, and when it is full, the dehumidifier will automatically shut off to avoid spillage. The only downside is that at 47dB, it is between a whisper and a regular voice; it is a little noisier than its competitors, so we recommend keeping it out of the bedroom at night. If you’re running a dehumidifier, keep the door to the room the dehumidifier is in open, so that air can circulate through your home. But close the window, so that damp air outside – which will migrate towards drier spots – isn’t drawn to the drier air indoors.
Which one you need depends on the size of the space you want to use it in, how many people are living in the home generating moisture through activities such as cooking, washing and doing laundry, and the extent of your damp problem. If you’ve bought a second-hand dehumidifier, read our guide to your rights when buying second-hand goods. How do I dispose of a dehumidifier? To get the most out of your dehumidifier, you will want to place it as close to the source of the damp as you can. As a dehumidifier can be noisy and bulky, it’s tempting to hide it away in a corner. But for larger rooms, try and place your dehumidifier in the centre so it benefits from the circulating air.Dehumidifier manufacturers have started to update their older models or create new ones using refrigerant gases with less of a global warming impact, such as R290. If you buy an older second-hand model, it may use a HFC (hydrofluorocarbon) refrigerant that can be a potent greenhouse gas if leaked. Night mode Dehumidifiers can be noisy machines. If you intend to run it at night, look for a model with a 'night mode' or a 'silent mode'. We've taken a look at the best dehumidifiers that you can buy right now, ranking them based on capacity, design, and any additional features that might make parting with your cash more worthwhile. And, if you're interested in improving the air quality in your home even more, then take a look at our guide to the best air purifiers. If you’ve noticed that there is a lot of condensation on your bedroom windows in the morning, it might be time to buy a dehumidifier. During the night, we sweat (a lot more than you might think) and breathe out warm air; this adds to the moisture in our room. However, dehumidifiers can be noisy, especially the compressor type, and with sleep already at a premium, finding one that doesn’t keep you awake is an absolute must! That’s where the Silentnight dehumidifier comes in. If you often hang your clothes to dry around your home, opt for a dehumidifier with a dedicated laundry mode. It’ll work with the additional humidity caused by your wet clothes, as well as reduce the time it takes for your clothes to dry. Win-win?
Extraction amount: It is essential to consider the maximum amount of moisture your dehumidifier can extract daily. It can range from anywhere from 500ml to upwards of 30 litres. Small units are fine for occasional use or a small area, such as a cupboard or study. Around 12 litres is suitable for a small flat, medium-sized room or a mild damp problem. Up to 16 litres is best for a larger room or one used regularly for washing or cooking, and units with a capacity of up to 20/30 litres can be used to dehumidify whole homes. Transparency is really important to us and that's why we're always upfront about where we find our recommendations. We write about products that we feel offer the best value to most parents – the ones that our users would recommend to their own friends and family. A newly built home may be damp if the water used when building it is still drying out– for example, in the plaster on the walls. Excess moisture indoors can also be caused by condensation. Dehumidifiers do not work the same as air conditioners, or the best portable air conditioners– though these can often also operate as a dehumidifier. Confused? Air filter: Some models come with a HEPA filter which helps to provide cleaner air in your home, which will be helpful for any allergy sufferers.Some dehumidifier brands routinely do well or badly in our tests, while others are a lot more hit and miss. Fan speeds: Some dehumidifiers have just one speed for continuous drying, limiting your control. Whilst others have up to three, which is advantageous if you want to adjust it for faster drying or put it on a lower (and possibly quieter) setting. Mould and damp are caused by excess moisture. Moisture in buildings can be caused by leaking pipes, rising damp in basements or ground floors, or rain seeping in because of damage to the roof or around window frames. The main factor to consider is the space you want to dehumidify . In general, for a bedroom an 11 or 13 litre dehumidifier will be sufficient, for garages, basements and larger rooms a 25lire would be ideal
Water tank capacity: This is how much water the unit can hold, ranging from around 250ml to six litres. The smaller the dehumidifier, the more regularly you’ll have to empty the tank, though some larger models have a continuous drainage option through a hose. The extraction rate you’re looking for really depends on where you live and what you’re using the dehumidifier for, but in the UK, you can aim for one that extracts between 1-2.5L a day. According to learnmetrics.com, a dehumidifier uses between 300 watts and 700 watts of energy per hour, depending on size and efficiency. That’s not much - more than your fridge but less than things like kettles and hair dryers. What's the best dehumidifier to buy?
Where is the best place to put a dehumidifier in a house?
It’s important to do get rid of your dehumidifier in a way that isn’t harmful to the environment. If sent to landfill, it could release the refrigerant into the environment. In some models, particularly older ones, these can be HFCs, which are greenhouse gases. The table below summarises this year's results. Brands are ranked by their customer score, which reveals how satisfied owners are with their dehumidifier and how likely they are to recommend it, plus how each brand's dehumidifier scores on average in our independent lab tests. If you're not yet a member, join Which? to get instant access to the following dehumidifier brand verdicts: Argos, Blyss, Challenge, DeLonghi, Dimplex, Ebac, EcoAir, Electriq, Logik, Meaco and Pro Breeze. Poor ventilation is the main reason for purchasing a dehumidifier – and if you're wondering how to stop condensation, a dehumidifier is one of the best ways. The majority of households regularly shower or bath, wash and dry clothes, all of which use a lot of hot water that creates steam. If there’s no way for the moisture to escape through windows or vents, then condensation and dampness begin to build. This is where a dehumidifier comes in, to help prevent this from happening, and to remove excess moisture from the air to help dry your clothes. How does a dehumidifier work?
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