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Reducing Humidity in Your Home: Why & How-To


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In the winter, we look for ways to add humidity to our home, but as we head towards the summer months, humidity becomes a problem. This article discusses the benefits of reducing home humidity; signs that your humidity is too high; and steps you can take to reduce humidity in your home.
 

Benefits of Reducing Home Humidity


There are four main reasons for reducing the humidity of your home: 1) improved comfort; 2) reduced formation of mold and related pests; 3) reduced environment for dust mites; and 4) cost savings. Excessive humidity in your home is not only uncomfortable, but it can also cause moisture-related damage to your house, such as mold formation and pest infestations. Running your air conditioner will lower your home's humidity (in addition to lowering the temperature), but reducing the humidity in your home is a more economical way to feel more comfortable during the coming summer. And proactively reducing the humidity in your home is also more cost-effective than repairing the damage that's caused by high humidity levels (helpful accessory: humidity monitors).
 

Signs of Excess Humidity


Indications that the high humidity levels in your home include: mold formations in your bathrooms, closets, walls or ceilings; moisture on basement walls and floors; condensation, frost, or ice on the inside surface of windows; damp spots on ceilings or inner surfaces of exterior walls; and ice or frost on the underside of the roof sheathing in your attic space. If you don't already have one, you should consider getting a hygrometer, which will allow you to measure the humidity levels at various places around your home. You should target to keep the relative humidity levels in your home below 60% in the summer. And if you're concerned about dust mites, then you should target to keep humidity levels less than 50%.
 

Steps You Can Take


Reducing humidity levels during the summer in your home can be thought of in three ways: 1) keeping water out; 2) creating less moisture in your home; and 3) removing the moisture from inside your home.

Examples of these include:
  • Checking your attic for indications of water leakage through your roof.

  • Ensuring that your attic crawl spaces have adequate ventilation.

  • Using exhaust fans in your bathrooms and kitchens to remove moisture before it spreads throughout your house; however do not run any longer than needed since blowing air out of your home will cause additional human air to be drawn inside your home (see types, costs and reviews of exhaust fans).

  • Ensuring that your roof gutters and downspouts channel water away from your foundations.

  • Avoiding overwatering shrubs and plantings near your home, and making sure that your lawn sprinklers aren’t aimed at your house.

  • If if your home has high humidity in just one area such as a basement or unscented storage area, then you may want to consider getting a dehumidifier for that area (see types, costs and reviews of dehumdifiers).

  • And if you live in a region of the country that is humid all year round, you might want to consider adding the types of houseplants in your home that actually absorbed humidity from the air such as: Peace Lily; Reed Palm; English Ivy; Boston Fern; or Tillandsia.

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