Which type of Dehumidifier should I buy?
Domestic dehumidifiers designed for the home can be split into two main types, Desiccant Dehumidifiers and Refrigerated Coil Dehumidifiers. Each has its own advantages and disadvantages and these should be considered when buying a dehumidifier.
1. Refrigerated Coil Technology
Refrigerated Coil based dehumidifiers work in a similar way the way condensation forms on a window. They contain a compact refrigeration system which becomes the coldest place in the house. A fan is used to pass air across the refrigerated coil and any moisture in the air is condensed on the coil which is then collected in the water container. At Ebac the refrigerated coils we use in all of our dehumidifiers are hydrophilic. This means the coils are coated with a special substance which allows the condensed water to run off the coils at a higher rate. This improves performance by allowing the water extraction and collection to be processed faster.
2. Desiccant Technology
Desiccant dehumidifiers work by passing air through a rotor containing water absorbent desiccant material. They generally contain five major components: two fans, a heater, a motor and a rotor containing the desiccant material. They work by using one fan to pass room air through the rotor which allows the desiccants to absorb the moisture and another fan to pass hot air through the same rotor to extract the moisture from the desiccants. The heater is used to produce the hot air and the motor is used to rotate the rotor.
Which type is best for me?
Although each type has its own advantages and disadvantages, refrigerated coil based dehumidifiers remain the most popular choice in UK and European homes. When it comes to deciding which dehumidifier is best for you though, it depends on what you see as being important. To help you we’ll explain each topic.
Desiccant dehumidifiers tend to be lighter and smaller making them a little easier to handle. Refrigerated Coil based dehumidifiers tend to contain heaver components making them heavier and sturdier. At Ebac, our dehumidifiers range from 12 to 14 Kg which you could compare to the average bedside cabinet. Although most people don’t tend to move their dehumidifier around the home we do offer optional castors with most models. The smallest/lightest model we manufacture is the Powerpac which is the most powerful dehumidifier in its size.
Refrigerated Coil base dehumidifiers typically use half the electrical energy of desiccant dehumidifiers. The main reason is because the desiccant types have to heat the air to create the dehumidifying process where as the coil technology actually converts the electrical energy consumed into outputted heat energy into the home. At Ebac we also include a patented Smart ControlTM feature into most of our dehumidifiers which learns from your lifestyle, the outside weather and the climate in your home. From this it calculates when to be on and when to be off. This can make it up to three times more efficient than a manually controlled dehumidifier.
The extraction rate of dehumidifiers is normally dependent on the individual model rather than the dehumidifier type. At Ebac our extraction rates vary from 12 Litres per day up to 25 litres per day with our most popular model (2650e) being 18 Litres per day. These extraction rates vary from model to model to suit your lifestyle, your budget and your home size. At Ebac when we design a dehumidifier, we always ensure a minimum extraction rate of 12 Litres. When buying a dehumidifier always check the extraction rate to ensure it is adequate for the size of the house as some manufacturers can be as low as 7 Litres per day.
Water Container Size
A lot of people (me included) enjoy emptying their water container each day. It reminds you how well your dehumidifier is performing. But, if the water container was so small that I had to empty it many times a day then I’d soon get sick of it. This is why you must ensure that the water container is large enough to cope. All dehumidifiers will stop as soon as the water container is full but if this happens then it isn’t dehumidifying. At Ebac we recommend a water container of at least 2.5 Litres. This means that you have the peace of mind that if you forget to empty it for 1 or 2 days the container won’t fill. Of course, if you don’t like emptying the container at all or its impractical then you can always use a drainage kit with Ebac models.
The major advantage that desiccant dehumidifiers have over coil based dehumidifiers is the temperature at which they can operate. As the temperate drops the desiccant based dehumidifier should operate the same but the coil based dehumidifier will be less efficient. However, for a home environment this won’t be a problem, in fact, in a home environment a coil based dehumidifier will work at its best.
Desiccant dehumidifiers have the ability to run a lot quieter than refrigerated coil dehumidifiers. Most desiccant dehumidifiers will have a ‘Low’ setting which will operate very quietly. Unfortunately, this also means that it isn’t running very effectively. The feedback we receive is that most customers that own desiccant dehumidifiers always have them on a high setting which results in similar noise levels to a refrigerated dehumidifier
When buying items you should always consider a warranty. A warranty not only gives peace of mind in the case of a breakdown but it also demonstrates how confident a manufacturer is about its own products. At Ebac we give up to five year’s warranty free with our products. We do this because we’re confident about our products. When shopping for a dehumidifier, whether you buy refrigerated coil or desiccant, always check the warranty period.