How to buy the best home dehumidifier
Desiccant, Refrigerant or other technology?
Looking for the best dehumidifier to help tackle condensation, damp and mould?
Si vous remarquez des taches d'eau sur vos murs ou votre plafond, de la condensation sur vos fenêtres, des spores de moisissure dans votre douche ou une odeur générale de moisi, il est temps d'acheter un déshumidificateur.
If you are in doubt see here
Whether you need a refrigerant (compressor) or desiccant dehumidifier will depend on application . If the dehumidifier is to be used all day and every day unattended you will need a commercial grade dehumidifier. The cost of commercial grade dehumidifiers used to be out budget reach of most home owners but not anymore.
Quelle est la taille de l'unité dont vous aurez besoin pour la maison ?
A dehumidifier’s size or capacity describes how many litres or pints of water it’s able to extract from the air each day, rather than its physical size or the capacity of its water tank. It is true that dehumidifiers with a larger extraction rates are usually physically larger and have larger water tanks than small capacity dehumidifiers. That is the general rule but desiccant dehumidifiers buck that trend a little.
The best-sized dehumidifier for your needs depends on the size of the space you want to use it in, how much time you have to dry, the temperature conditions and how much moisture is being generated in that space.
The rule of thumb of for compressor units is 1 litre of water extraction for every 10m2 of floor space (around 2 pints of quoted maximum water extraction for every 100 sqf).
For a desiccant the rule is a little different as they extract water more evenly over different temperatures and do not rely on high temperatures. Therefore, realistically 1 litre of water extraction for every 20m2 (around 1 pint of quoted maximum water extraction for every 100sft)
See more on sizing here
Larger units will be needed if the property is on one level not two, more people are in the dwelling than average and other considerations like home proximity to water or the coast. For example, If the property has a conservatory or a large amount of glass in the dwelling, then the dehumidifier will often need to be larger than the rule of thumb.
Les unités Ecor Pro peuvent faire circuler l'air avec des turboventilateurs comme déshumidificateurs autonomes, mais peuvent aussi être équipées de conduits supplémentaires pour aspirer l'air de différentes zones de l'espace ou de la maison afin de sécher l'air plus efficacement.
Déshumidificateur réfrigérant ou déshydratant ?
Refrigeration technology has been around for the past 150 years while desiccant is a fairly modern at only 50 years with the first stand alone dehumidifiers around only 30 years ago.
The cost of desiccant was largely prohibitive for most applications until the last 10 years when certain restrictions were lifted & the popularity of desiccants allowed the prices to fall to the point where they are more affordable for domestic and home applications.
Desiccants have been slower to catch on for another reason and that is how the models are compared on performance to compressor dehumidifiers. Moreover, what is their maximum performance and whether that is a true reflection of the different technology’s ability to combat the moisture problems in the homes.
In the past 6 Years Ecor Pro has focused all dehumidifier development on Desiccant dehumidifiers reflecting the importance we see in this desiccant technology going in to the future.
How Does a Refrigerant or Compressor Dehumidifiers Work?
A refrigerant dehumidifier works in the same way as you would expect as the common refrigerator in the kitchen of the home: the home refrigerator has usually the back inner wall relatively cold and the outside black grill relatively warm.
That cold back wall contains a cold refrigeration coil, the system transfers heat from inside to outside by the refrigerant gas powered by an electric compressor. Often this is a small dome shaped object at the back of the appliance. This cool surface principle can be used as a condensing surface for moisture when used in a dehumidifier: imagine no back wall in a home refrigerator just the warm and cold refrigeration coils next to each other. If air passed through the refrigerator from the door opening in such an imaginary refrigerator, the air would happen upon the cold refrigeration coil surface. As air touches the cold coil the air becomes denser and then may give up its moisture onto the cold coil.
In addition, that moisture can be made to drip down the cold coil and collected underneath to be drained away to the outside or into a water container.
As the air passes the cold coil and happens onto the warm coil it will be reheated. Leaving the warm coil the air is slightly warmer and dryer.
Furthermore, a big issue is the surface area of the coils. Air must pass through but as much of the air as possible must come in contact with the coils in order for the dehumidifier to be as efficient as possible. Not found on refrigerators as fins added to the coils to increase the surface area.
Tous les déshumidificateurs de compresseurs Ecor Pro utilisent des serpentins à ailettes
Si le déshumidificateur doit être utilisé toute la journée et tous les jours ou surtout s'il doit être utilisé sans surveillance, nous recommandons toujours d'utiliser des déshumidificateurs de qualité commerciale pour les applications suivantes
Differences in Compressors in Refrigerant Dehumidifiers
In a home refrigerator the usual black domed compressor at the back of the refrigerator is called a “reciprocating compressor”. These refrigerator compressors are still used in some older dehumidifier designs. In more modern dehumidifiers “rotary compressors” are used. These rotary compressors are used in air conditioning systems mostly.
The reciprocating compressor works similar to a car engine and the up and down motion of the piston can be noisy. The internal piston noise makes a deeper sound that can be heard often through the home as indeed a refrigerator can.
A rotary compressor uses a rotary piston. This generally is quieter and also tends to be smaller in size allowing he dehumidifier to be more compact.
All Ecor Pro refrigerant dehumidifiers that are compressor based use rotary compressors.
How long does a refrigeration dehumidifier last?
Large refrigerant dehumidifiers if not moved can last a long period of time with correct maintenance. The dehumidifiers may need topping with refrigeration gas at regular intervals usually every few years by a qualified refrigeration engineer. If your dehumidifier starts to blow hot air and not extract water shut it down immediately as this is a common sign of lack of refrigerant in the system.
Smaller home refrigerant dehumidifiers are susceptible to gas leaks as they are portable and pipes internally can crack as the dehumidifiers are transported. These cracked pipes leak the refrigerant gas and the repair of these home units is often complex and almost the cost of a new replacement unit.
How long does a desiccant dehumidifier last?
Regular cleaning of air filters will both improve efficiency of any dehumidifier and also prolong the lifetime of any dehumidifier.
A desiccant or adsorption unit will only need the internal desiccant wheel replaced about every 4-5 years to maintain efficiency. They will continue to try but is estimated that the wheel will have 80-90% efficiency after this time.
Often commercial desiccant dehumidifiers have their wheels cleaned periodically with compressed air which is easy to do to maintain efficiency. Having far fewer parts to go wrong, desiccant dehumidifiers are generally more reliable than refrigerant units especially when they are commercial grade.
All Ecor Pro desiccant dehumidifiers are commercial grade.
Comment fonctionne un déshydratant ou un déshumidificateur par absorption ?
Imagine a wheel made up of rolled corrugated cardboard, the flutes then run parallel to the axis of the wheel allowing a free flow of air and giving the wheel a high surface area.
This is the shape of the sub straight that is then impregnated with zeolite;: a product that has an usual property. Zeolite absorbs moisture at normal temperatures even below freezing temperatures but gives up this moisture when heat is applied. You have seen it in small sachets when you buy fine leather goods, cameras or other electronics.
The Zeolite can be regenerated over an over with a warm air stream, similar to that of a hair dryer.
If the wheel described above is rotated slowly, air we want to dry made to pass through it and part of the wheel having a warm hair stream to purge it of moisture, we have an effective and continuous drying system. If we exhaust that hot and now very humid air to the outside space we have dried the room or rather moved the moisture from one place to another as a vapour.
This drying of the wheel with warm air is often termed as a “purge” of the moisture
The heating of this purge air in units that are not commercial grade are often just wire wound heaters like you would find on an old electric fire. This is why that none commercial desiccant dehumidifiers should only be used in attendance. If there is a mechanical fault, the standard desiccant dehumidifier can overheat with disastrous consequences.
All Ecor Pro desiccant dehumidifiers use high grade components including Positive temperature coefficient (PTC) heaters which can not overheat.
A PTC heater is a self-regulating heater which strives to keep a constant temperature regardless of how the ambient conditions change. It is the material in the heater itself that regulates the temperature so if there is a fault the heater can not overheat.
Hear the full explanation here on slide 10
Why is The Water Tank Small on Normal Home Refrigerant Dehumidifiers?
When you buy the dehumidifier the water extraction quoted in the main is usually the maximum water extraction in 24 hours. This maximum will be a factor of the temperature the unit was tested in and the humidity of the air. Of course the maximum is taken at maximum temperature and maximum humidity to give the maximum quoted water extraction result. This maximum amount of water is often many times greater than the volume capacity of the water container inside the unit itself. The water tank however is usually designed for the amount of water the dehumidifier will extract in a typical 24 hour period so is a good rule of thumb of actual performance of the machine.
Ai-je besoin d'un filtre ou d'un ioniseur spécial ?
Some brands of home dehumidifiers have ionisers however the impact of such ionisers is minimal in dehumidifiers generally
Les filtres spécialisés cités par de nombreuses marques sont souvent inefficaces. Trop petits pour filtrer les petites particules nécessaires pour avoir un impact en général. L'objectif premier du filtre du déshumidificateur est d'assurer le fonctionnement efficace du fonctionnement interne du déshumidificateur lui-même.
Tous les filtres Ecor Pro doivent généralement durer toute la vie du déshumidificateur avec un nettoyage soigneux. L'exception à cette règle est le puissant déshumidificateur LD800 qui possède un grand filtre "de type HEPA" à l'intérieur.
Plus la boîte est grande, meilleur est le produit ?
Generally that is not true. Often bigger boxes have more space. The size of a dehumidifier has real disadvantages as they take up storage space when not being used and traditional dehumidifiers take up floor space when they are being used in the living areas.
Ecor Pro DryFan dehumidifiers were designed to work out of sight saving floor space, less obtrusive and give a positive feeling to the home’s air rather than also an unwelcome eyesore to look at while it works.
Combien coûtent les déshumidificateurs ?
Les déshumidificateurs consomment de l'électricité aux frais du fournisseur. Le coût de fonctionnement d'un appareil est directement lié au nombre de watts consommés. Toutefois, l'efficacité du déshumidificateur est la considération principale.
Un déshumidificateur ne régule l'humidité qu'au point de consigne, puis s'arrête de fonctionner grâce à son réglage d'humidistat. Lorsque les déshumidificateurs cessent de fonctionner, ils ne consomment que de l'énergie en veille, ce qui ne représente généralement que quelques watts d'électricité et ne coûte que très peu.
La consommation d'énergie du déshumidificateur ne doit pas être considérée de manière aussi absolue que le coût de fonctionnement du déshumidificateur. En effet, l'efficacité du déshumidificateur doit également être prise en compte, tout comme la technologie employée.
In term of energy efficiency a desiccant unit will use around the same amount of energy as a refrigerant dehumidifier in terms of the number of watts. However, in real terms, desiccant dehumidifiers will extract more water at normal temperatures making them typically more efficient.
The good news is, you probably don’t need to worry too much about a dehumidifier adding enormously to your energy bills. Dry air feels warmer than moist air so less heating is needed. It is often said the cost of running a dehumidifier is offset against lower heating bills.
The heat used to purge an Ecor Pro can either be expelled or retained. This is by radiating the heat from the exhaust prior to discharge. If the goal is to reduce the temperature of the room then make the exhaust short or insulate the exhaust so the heat is pushed to the outside.
Ecor Pro dehumidifiers mostly come out top in test as the most energy efficient dehumidifiers for extracting water.
Ecor pro : des experts en déshumidification depuis plus de 40 ans
Qu'il s'agisse de la conception de déshumidificateurs domestiques ou de déshumidificateurs commerciaux, nous avons tout prévu.
Quelle est la différence entre le grade domestique et le grade commercial ?
Il y a souvent une note dans le manuel d'utilisation des déshumidificateurs domestiques ou de maison "Ne pas utiliser sans surveillance". Cette note est là parce que le déshumidificateur n'a jamais été conçu pour être utilisé pendant de longues périodes. Tout appareil pose un problème de sécurité.
In the past 6 years, 8 million compressor or refrigerant dehumidifiers have had to be recalled from the US and European markets due to safety issues. Those safety issues were extreme enough to pose a fire risk. Generally a home dehumidifier is traditionally a plastic box with a compressor that itself heats or in a desiccant dehumidifier a heater element inside that of course heats. Both use mains electricity and both rely on many electric & electronic components to function in order for the dehumidifiers to remain safe. Should one of these components fail then the safety of the dehumidifier is compromised sometimes with grave consequences.
Ecor Pro dehumidifiers have triple safety. Even our PTC heater desiccant models have over heat protectors. Our models have triple safety above the norm and above most other suppliers. Ecor Pro recommends that for all day use, commercial grade models are used.
Why do normal dehumidifiers tend to have electronic controls and commercial models use manual controls?
Electronic controls are often cheaper to manufacture than manual controls these days. Manual controls however tend to be more reliable and more accurate over time. Electronic components are often ironically affected by humidity. They are often affected by power surges also which can reset the controls.
Electronic controls also have a peculiarity. That is when the power supply is interrupted they will reset to a default position which is often in the “off” position. Commercial units are usually unaffected by power surges so continue working normally after surges and power outs. This is common for some places and often areas that are working off the grid power supplies for instance.
Tous les appareils Ecor Pro de qualité commerciale sont équipés d'un contrôle manuel de l'humidistat.
Ai-je besoin d'une minuterie sur mon déshumidificateur ?
En général, ce n'est pas le cas car le déshumidificateur est régulé par les unités humidistat. Le fait d'éteindre le déshumidificateur peut signifier que l'humidité augmente réellement avec le temps.
See more here
Résumé des déshumidificateurs de produits déshydratants et réfrigérants
Each type of technology has advantages. Refrigerant (or compressor) dehumidifiers work by creating a cold surface. When warm, damp air comes into contact with the cold surface, condensation forms and drips into the water tank. They’re generally only effective in a heated room in the house because, if the temperature drops too low, the coils inside them can freeze over. They also perform very poorly in normal home temperatures. Desiccant dehumidifiers use an adsorbent material to extract water from the air. You can think of them as a sponge for the air that when heated dries quickly.
Desiccant dehumidifiers will often work more effectively than refrigerant dehumidifiers in colder temperatures but are not limited only to colder temperatures. Ecor pro dehumidifiers have been used in tropical environments too. If you’re looking for a dehumidifier for an unheated garage, conservatory or other out-building, you should generally opt for a desiccant.
If you need to operate the dehumidifier all day and every day then commercial grade is needed.
Take into consideration that two different dehumidifiers with the same quoted capacity could vary enormously in performance. The way desiccant dehumidifiers are classified is in the same way as refrigerant units and at the same conditions usually. What should be the key measure is the cost to extract a certain amount of water.
Professional flood drying companies
are moving from refrigerant drying
to desiccant drying due to performance
If its likely to work below freezing then Ecor Pro desiccants are one of the few models that can do this feature. Others stop working just above freezing.
Ecor Pro does want people to have to consider how to pour the water away, a risk of secondary flooding so since 2016 transferred nearly all product development resource to the design of products we see as the next generation of dehumidifiers for the home and that is DryFan technology which we continue to develop.