Frequently asked questions about Eva
With ultrasonic technology, the water is converted into mist. At the same time, limescale in water is converted into minute particles, which are deposited as a white film on furniture. This is why we use an anticalc cartridge in Eva as it reduces the limescale content in the water. If the water is harder than 21 degree dH, this cartridge would have to be replaced very often, in order to prevent the white film. For this reason, we recommend using our evaporator or air cleaner (e.g. Oskar, Oskar big, or Robert) for very hard water.
Do not operate Eva with decalcified water out of a decalcification system that uses the principle of an ion exchanger (salt is added to the water). The salt contained in the water may lead to white dust accumulation around the appliance. Therefore, please use distilled water or hyper-filtrated (reverse-osmosis) water for Eva and take out the anticalc cartridge. The mixing ratio should be 50:50.
Eva with production date of June 2019 or earlier
(see rating plate on the bottom of the device)
To minimize the risk of white dust (see FAQ "Where does the white film come from?"), you can operate Eva using a mix of distilled and tap water. The mixing ratio should be 50:50. Attention: Please do not operate the unit using pure distilled water as the water level indicator will not work correctly.
Eva with production date of July 2019 or later
(see rating plate on the bottom of the device)
Devices produced in July 2019 or later are fitted with a different floating switch (see red arrow). You can use 100% distilled water with these Evas if you wish. You can also save on the amount of distilled water you use by mixing it with tap water. The more distilled water you use, the less white dust or deposit will be produced.
If the humidifier Eva produces less mist after several weeks in operation, the water base needs to be decalcified. Please refer to our cleaning instructions here.
If there is still no mist visible after cleaning and without the use of the heating plate cover, Eva needs to be sent to one of our service centers for a technical inspection. Please contact the dealer you have purchased Eva from.
The two dots show that the Remote Sensor™ has lost the connection to Eva. The Remote Sensor™ is the external sensor that measures the humidity in the room and that can also be used as a remote control. Without a connection to the Remote Sensor™, Eva can no longer measure the humidity precisely. To restore the radio connection, press any button on the Remote Sensor™ (apart from On/Off). If the two dots are still visible on Eva’s display, check that the distance between the Remote Sensor™ and Eva is approx. 3 to 5 m. Walls and floors between Eva and the Remote Sensor™ can disrupt the radio connection. Another reason for the lack of connection is when the batteries in the Remote Sensor™ need replacing. Replace the two AAA batteries with new ones and then activate the Remote Sensor™ by pressing any button on the Remote Sensor™ (apart from On/Off). The current humidity value should now be shown on Eva’s display
Yes, Eva can also be used without the Remote Sensor. However, please bear in mind that the measured humidity value will be affected slightly as the humidity sensor in the device is located near the mist outlet. Thus, the measured value is not as precise as with the Remote Sensor. Eva will also indicate that the contact to the sensor cannot be established, and two dots will appear on the display. However, the device can be operated normally.
Yes, you can operate two Eva humidifiers with one Remote Sensor. In this case, both devices will respond to the Remote Sensor and adopt the humidity value measured by the sensor. It is important that the distance between the two Evas and the Remote Sensor does not exceed 10 m, with the optimal distance being 3–5 m. This must be respected in order to establish the contact between the Remote Sensor and both Evas.
All the remote sensors for Eva have the same frequency and range. If you are using several Evas within close proximity, it is possible that because of this closeness, the devices will not detect the individual remote sensor or all the devices will react to the same remote control. If that is the case, please contact our Customer Service. We can provide you with remote controls which have a shorter range. So that each device can be controlled individually.
“Warm” mode provides a pleasantly warm mist and more powerful humidification. The mist in “Warm” mode on the highest output level rises to up to 1.4 m. Thus, the mist evaporates more quickly and settles less on the floor. A cool mist, i.e. with “Warm” mode deactivated, is recommended if the room temperature is high enough or even too high. In this case you will perceive the cool mist as very pleasant. This applies, for instance, in the summer when the air is dry because of the air-conditioning.
If the anticalc cartridge is not replaced frequently enough, a white film of limescale is formed from the water. If you notice such a film, the cartridge needs to be replaced. A white film can also originate from water from decalcifying systems. In this case, however, it does not come from limescale but from the salt in the unit. Therefore, please use distilled water or hyper-filtrated (reverse-osmosis) water for Eva and take out the anticalc cartridge. The mixing ratio should be 50:50.
For hygienic reasons and to ensure proper operation, we recommend the following cleaning intervals.
Attention: Never immerse the appliance in water (danger of short- circuit).
Daily: Fill the water tank with fresh, cold tap water. If the appliance is not used for several days, empty the water from the water tray beforehand and if necessary, clean it with a bit of dish detergent and a clean cloth. Fill fresh water into the water tank, before putting the appliance back into operation.
Every 2 weeks: First remove the water tank, the mist chamber, the cover and the Water Cube™. Clean the inside of the water tray thoroughly with a bit of dish detergent, warm water and a soft, clean cloth, sponge or brush. Use diluted descaling agent (mix according to the manufacturer’s instructions) for lime deposits. Then rinse the water tray thoroughly with cold water and put the water tank, cover, mist chamber the Water Cube™ back in.
At least once per month: Run the cleaning mode as as described in the manual (EU) / manual (USA/CA).
Regularly as required: For external cleaning, rub with a damp cloth and then dry thoroughly.
At the end of the season: Before putting away the appliance at the end of the season, run the cleaning mode. Then clean it thoroughly inside and out and let it dry completely. Insert a new Water Cube™ in order for your appliance to be ready for the start of the next season.
Run the cleaning mode at least once per month. The appliance must be off for at least 15 minutes prior to internal cleaning! Then remove the water tank, the mist chamber, the silicone cover, the Water Cube and the fragrance container. Fill a cup with 200 ml of tap water mixed with descaling agent (mix according to the manufacturer’s instructions). Pour the liquid carefully into the water tray by holding the cup directly over the water tray. Do not pour the liquid into the water tray from high above the tray! Be sure that no liquid enters the air inlet opening. This will damage the appliance and will avoid any claim to the warranty.
Unscrew the tank cap, fill the tank with tap water mixed with decalcifying agent (mixing ratio according to the manufacturer's instructions). Then close the water tank and shake it thoroughly. Before opening the tank, press the valve in the middle of the tank cap to release the pressure. Then empty the tank and rinse it thoroughly with tap water. If necessary, remove residues with a household brush.
The intensity of the fragrance is influenced by various factors:
- Type of fragrance (synthetic, natural, ingredients, etc.)
- Room temperature and relative humidity (the more humid the air, the stronger the fragrance will be)
- Room size (the smaller the room, the more intensive the fragrance)
In principle, you can increase the intensity of a fragrance by adding a little more fragrance oil. The strength of a fragrance will depend on the fragrance itself. Natural fragrances are often more discreet than synthetic ones and certain ingredients are more dominant than others.
It should also be remembered that first and foremost, the device is a humidifier. Its main focus is to provide humidity in the room and because of that, the intensity of its fragrance will never be as strong as the fragrance from an aroma diffuser.
The picture shows the position of the Water Cube (No. 24, previously Silver Cube) in the water base of Eva. Remove the water tank from the unit and then place the Water Cube in the designated position.
Please do not place the Water Cube on the heating plate (No. 17). This may lead to damage to your Eva.
All devices with a production date of May 2019 (SN number 1905 xxxxx, see rating plate on the device) or newer operate with a new technology and therefore have a float gauge. Check first whether the float gauge (red arrow) can easily be moved up and down. It may be blocked due to limescale/dirt. Decalcify the water base regularly to ensure trouble-free operation.
Please rinse the water base of Eva with warm water and make sure the heating plate and the ultrasonic membrane are free of any limescale residues. Descale the water base if necessary. Be careful not to spill any water into the air opening of the water base. Fill the water tank and start Eva again. If she still displays the red light, please remove the anticalc cartridge (positioned on the inside of the water tank, attached to the water tank cap) and let Eva run for 30 minutes without the cartridge. If Eva still does not run properly, please get in touch with the retailer you purchased Eva from to start the repair process.
A flashing humidity value means that the desired humidity has been reached and the device has switched off automatically.
The desired humidity can be changed by pressing the “Hygrostat” button several times (35 – 75 % and continuous operation “CO”). The symbol on the display blinks during input. After a few seconds without input, the selected value is saved. The symbol changes to the current measured humidity.
You probably own a new Eva. Since the product modification 2019, Eva has a new floating switch (red arrow). This technical adjustment allowed us to improve the longevity of Eva, but as a result, Eva no longer resumes operation automatically. However, this can be solved very easily.
Replace the water tank and just press the on/off button twice in a row. Eva will resume operation after a few seconds.
Eva operates based on the principle of ultrasonic nebulisation. With this process, a membrane turns the water into tiny droplets which are then blown into the room as mist by a fan before they evaporate. The following video explains how the various humidification systems work and why no mist is visible with evaporator humidifiers (such as e.g. Oskar).