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.

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.

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 the reduced mist occurs shortly after putting Eva into operation, we ask you to test the operation without the heating plate cover. Please proceed as follows:

  • Remove the cover for the heating plate (No. 1) from the water base
  • Remove the fragrance container (No. 2) in case you have used aroma oils
  • Carefully rinse the water base with warm water twice. Make sure that no water enters the air inlet (No. 3)
  • Remove the mist chamber (No. 4) from the unit and thoroughly rinse it with warm water from both sides. Then put it back into the unit
  • Reinsert the fragrance container
  • Now switch Eva on again, select the pre-heating ("Warm"), choose step 5 and the continuous operation (hygrostat to "CO"). Wait 10 minutes and then check the mist output. If the emitted mist is visible, please contact the Stadler Form distributor in your country. We will send you a new heating plate cover free of charge

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.

Download Instruction Manual Eva Humidifier

Download Quick Setup Guide Eva Humidifier

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.

“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.

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 Silver 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.

Cleaning instructions

Video with cleaning instructions

You can use any common household scents, fragrances, aroma oils or essential oils. We recommend using oils that are as natural as possible without alcohol e.g. pure essential oils from Stadler Form.

No, Eva has to be switched on manually after the power supply is interrupted.

The picture shows the position of the Silver Cube (No. 24) in the water base of Eva. Remove the water tank from the unit and then place the Silver Cube in the designated position.

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.

These noises can occur, if the heating plate (1) of the pre-heater is full of calc/limescale. In this case, it helps to descale the humidifier lady. See „How do I decalcify and clean Eva?“.

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