Dehumidifiers have onboard humidistats that automatically maintain the humidity level you set. We suggest keeping your humidity level at 45-50%. You can adjust it slightly based on your comfort level, but keep in mind this is an ideal humidity level for healthy indoor air quality.
Let's talk about what humidity levels you should keep in your home year-round, and different techniques to do so. Ideal in-home humidity levels should hover around 45%. Anything under 30% is too dry, and over 50% is too high.
High humidity can cause problems in your home if relative humidity regularly exceeds 60%. When the air contains water vapor above that level, mold and mildew start to grow, while excess moisture can cause rot, damaging your belongings.
No, your dehumidifier should not have to run constantly to regulate the air humidity. An optimal humidity level to shoot for is between 30 and 50 percent.
The size of the room, the humidity level, and the extent of the water damage are some of the variables that affect how long a dehumidifier takes to dry out a room. A dehumidifier typically needs between 24 and 72 hours to completely dry out a room.
Over-dehumidifying your home can lead to an increased chance of respiratory illnesses and dry and cracked skin.
If there are no cold-condensing surfaces and the relative humidity (RH) is maintained below 60 percent indoors, there will not be enough water in those materials for mold to grow. However, if the RH stays above 70 percent indoors for extended periods of time, mold will almost certainly grow.
A home should have a relative humidity of 30% to 60%. Above 60% and you have what's considered “high” humidity. Besides being less comfortable, high humidity causes a host of other problems in your home, including: Growth of fungus and mold in various parts of the home.
This could be through leaky windows, leaky floors, wet crawlspaces, leaky HVAC ductwork, or very small leaks in all of these areas that form a large amount of leakage when combined. Even if your home is sealed up – moisture can still travel through walls, wood floors, and even concrete.
But the truth is—there are only a couple of practical reasons why your house is humid: Your house isn't keeping humid outdoor air outside. Your HVAC system isn't up to the job of reducing your home's humidity.
The ideal humidity range for a home should be between 40% and 60%, as anything outside of this range could lead to several problems such as respiratory discomfort, dry skin, and eyes, or even mold growth.
How Long To Run Your Dehumidifier? So to recap, run your dehumidifier unit for at least 12 hours a day. This is a good rule of thumb. Again, it's okay if you don't stick to this schedule every day, but be aware that the more your family runs your dehumidifier unit the fresher and cleaner it will be all year long.
If your dehumidifier's water basin is filling up too quickly, you probably have extra water in the air due to an issue like a cracked pipe, water leak or open crawl space. If you're hardly getting any water in the basin, you may need to simply turn the control to a drier setting.
A dehumidifier should collect around 10-20 pints a day. However, factors such as relative humidity levels, size of the appliance, location, and temperature can affect how much it collects.
An indoor humidity level is too high when it's above 50%. At this level, your home is susceptible to increased dust mite infestations, as well as mildew, mold growth, and other bacteria. This can cause serious health issues for those who breathe in mold spores or are exposed to bacteria for long periods of time.
If the levels are off, whether too high or too low, you face structural damage to your home as well as potential health issues. Comfortable levels of humidity range between 30% and 60%, however, the ideal humidity level, according to ASHRAE, is between 45% and 55%. Anything above 55% is considered to be high.
Mold stays “dormant” in the air or on surfaces even when there's no excess moisture to help it grow. If the humidity in a room increases, mold will start growing in patches on walls, clothes, and more. So, to answer your question, dehumidifiers do NOT kill mold, but they do prevent it by reducing humidity.
Keep the thermostat at 78 degrees or above. A higher thermostat setting and slightly warmer air temperature results in drier indoor air. In the cooling mode, temperatures lower than 78 degrees generate more humid air and cool indoor surfaces, increasing condensation that breeds mold.
Summer is one of the ideal seasons for mold growth due to high levels of humidity. The condition may be worsened further with poor ventilation, which hinders free flow of air. Hot temperatures outside and cold temperatures in the indoors can lead to condensation around windowsills, and other insulation materials.
However, it's important to know when to turn the unit off. Once temperatures drop to around 65 degrees, it's best to turn the dehumidifier off.
Knowing the proper humidity levels is key. When the relative humidity (RH) drops below the 30%–50% range, you should immediately switch off the dehumidifier. The ideal relative humidity for comfort and well-being is 45%. Humidity helps maintain comfort and indoor air quality.
The best time to use a dehumidifier is before the humidity begins to affect your household. When you walk in the house after being outside on a hot and sticky summer's day, you want to be met by a blast of refreshing, cool air – not additional stickiness.