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Dehumidifier FAQ

Relative humidity

Moisture is present in the air within your living space. Your daily activities, such as cooking, showering and drying laundry, contribute to this moisture level. Consequently, when warm and moist air encounters colder air, the excess moisture condenses into water. This is when the presence of dampness and mold becomes apparent, appearing on walls and windows, and even more concerning, on soft furnishings and clothing.

To combat this issue, a dehumidifier eliminates excess moisture from the air, preventing it from condensing and lingering in your home. Not only does this alleviate damp problems, but it also improves the quality of the air you breathe and enhances energy efficiency.

What is a dehumidifier?

A dehumidifier is a device that reduce and maintain the moisture level of the air. It helps alleviate humidity problems, provides healthier air to breathe and can even make your energy consumption more efficient.

Why do water drops appear on windows/cabinets/walls?

It is a basic law of physics that this phenomenon occurs when the surface is cold enough and there is enough water vapor in the air. For windows, whether they are double or single, this means that water droplets are inevitable once they are cold enough and there is enough moisture in the air.

Where does the water come from?

We all produce water by drying our clothes in the house, boiling water in the pot, taking a bath, drying laundry, etc. It’s a constant process that never stops. Can I get rid of water by simply opening the windows? On sunny summer days, this is advisable, but in winter, opening the windows will only cause the heat in the house to be lost. This is a waste of money, and when it rains, even more moisture enters the house.

Ideal humidity conditions in the house

When the relative humidity is above 60%, the indoor air is considered to be very humid. Such a high value creates conditions for mold growth and endangers both people and the house (furniture, masonry, etc.). If the humidity is too high, it can trigger asthma attacks. Worse, the link between mold exposure and symptoms of severe allergic reactions in the respiratory tract has been shown to exist even in healthy people. The ideal indoor humidity level is usually between 50 and 60%. In this range, indoor air promotes general well-being and gives us a feeling of comfort. It helps prevent problems such as mold growth (too high humidity) and dryness (too low humidity) and ensures the longevity of furniture and wooden structures. Finally, proper humidity helps regulate room temperature, improving energy efficiency in homes and offices.

Is the dehumidifier suitable for the whole house?

The dehumidifier can dehumidify as many cubic feet of space as the volume of air its blower can affect. On this basis you can choose the right capacity for my dehumidifier. For example a 12L dehumidifier can control a large three bedroom home and a 20L dehumidifier can control a five bedroom home. Please note that moist air always flows into dry rooms. Thus, as long as you leave all intermediate doors open, the dehumidifier can control water droplets on surfaces and mold throughout the house.

Should I leave the windows open when using a dehumidifier?

If you are using a dehumidifier to control the relative humidity in your home, you should NOT have the windows of the home open! On the one hand, the dehumidifier will not stop working and try to dehumidify the room outside. On the other hand, our goal is to keep the moisture from outside the house. If we want to air the house in the morning, we can do it for a short time by turning off the dehumidifier first. This is like leaving the heater running with the windows open. When we are done airing the house, we turn the dehumidifier back on.

What’s with the black mold stains on my windows and in the shower stall?

Mold grows at a relative humidity of 68%, water droplets at 100%. In other words, you can have mold but still have clean windows. The dehumidifier prevents further mold growth, and once you clean the mold, it is completely gone.

Do I put the dehumidifier in the room with the worst conditions?

You can if you put it in the most problematic room first, and then move it to a more favorable location when you see that the problem is under control. If you are only concerned about water droplets on the windows, you can place the dehumidifier in a central location to solve the problem for the whole house.

Are dehumidifiers high in consumption?

The compressor dehumidifier has low operating costs. The dehumidifier does not run all the time because it is controlled by its humidistat. Secondly, it is quite expensive to heat a damp house, and you will notice a reduction in your heating costs once you start using the dehumidifier. Platinum series dehumidifiers consume much less electricity compared to other compressor dehumidifiers on the market.

What is a humidity sensor?

Just as you have a thermostat to control your heating, you have a humidistat on your dehumidifier. This controls when the dehumidifier is on and when it turns off, depending on your relative humidity settings, without you having to worry about it.

How long should a dehumidifier run?

Should I only run the dehumidifier for a few hours? No, run it 24 hours a day and just let the dehumidifier’s humidistat decide when to turn on. All Kullhaus dehumidifiers are equipped with a precision room humidity sensor.

Dehumidifier Permanent Drainage

All Kullhaus dehumidifiers have a permanent drainage possibility. Simply insert the hose into the designated socket on the dehumidifier and make sure that the other end of the hose flows into the drain. The hose should flow towards the drain and the water should be able to flow down and not be trapped in the hose. For this reason, the dehumidifier should be placed at a relative height (rather than on the floor) so that the hose is pointing downward. Make sure the tube is not blocked so the water can flow down unimpeded.

How can a dehumidifier improve health problems?

Breathing humid air reduces the immune system’s ability to fight viruses and seasonal respiratory infections. A dehumidified room can make breathing easier for some people, clearing sinuses and relieving coughs or colds. Indoor humidity between 50% and 60% helps fight respiratory viral illnesses, including COVID -19, by reducing the number of infectious pathogens in the air. Moreover, healthy relative humidity levels prevent the growth of dust mites and other pests. In this way, the dehumidifier helps to eliminate allergies and dust mites.

How do I keep the dehumidifier in good condition?

To keep the dehumidifier in good condition, maximize its performance and extend its life, you just need to check the filter frequently and clean it according to the instruction manual. If the dehumidifier is in constant use, the filter may become clogged with dust and particles.

  • The filter should be cleaned every two weeks.
  • Never use the device without an air filter!
  • Tip: Do not place the dehumidifier on the floor, but on a piece of furniture with a stable and flat surface.

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