Issues From High Indoor Humidity Levels.

When the humidity levels soar outdoors, it’s natural to seek sanctuary indoors, thanks to the marvels of modern air conditioning. If you move fast enough between the house, the car, and buildings, you hardly have to feel humidity levels that make you feel like you’re breathing a wet sponge. But just because that cool air is enclosed inside four walls doesn’t mean it’s protected from high humidity. It doesn’t just make you feel hotter; humidity in your house causes all kinds of trouble, ranging from mild discomfort to damage to your home and possessions, and even your health.

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Poor Indoor Air Quality

Even with the benefits of air conditioning, air quality suffers with excess humidity levels. Modern construction techniques and better building materials mean that there are fewer gaps to let air leak in or out. While it’s important to keep the hot, humid air out and keep the nice, cool air in, these tightly sealed buildings also seal in dust mites and mold spores that are commonly found in the air. All the spores need to grow are food sources, which are in building materials and textiles, and humidity. While air purifiers and plants can help clean the air somewhat, the best way to manage the quality of the air inside your home is to control the humidity levels.

Mold and Mildew Growth

If your home or business has a problem with high humidity levels, it’s not a matter of if there’s going to be a problem with mold and mildew, but when. Mold spores occur naturally in the air and are microscopic, so there’s no way to eliminate them completely. Spores begin growing into mold within 48 hours of exposure to high humidity levels because they find plenty of food sources in drywall, paper, fabric, and other materials. Left untreated, mold will continue to grow, quickly moving into hidden areas like walls where it can travel through a building undetected, spreading into areas that weren’t affected by the initial infestation.

Lower Quality Sleep

Anyone who’s gone camping in the middle of summer or lived without air conditioning knows the challenges of trying to sleep when the humidity is high. When the air is humid, water can’t evaporate from your skin and cool your body. When your body is too hot, it’s difficult to fall asleep and stay asleep, so the quality of your sleep suffers. Poor sleep quality affects so much of your everyday life, so it’s worth investing in a window air conditioner or a dehumidifier for the bedroom if excess humidity is a problem.

Increased Asthma & Allergy Symptoms

Besides damaging your home or business and its contents, mold caused by high humidity impacts your health. If you already have asthma or allergies, mold growth will only make them worse. Worsening symptoms means more visits to the doctor, which means more lost time from work or school, and more money spent on medications. Even if you don’t have asthma or allergies, mold growth irritates eyes and respiratory systems, so reactions feel more like a cold that just won’t go away, no matter what over the counter medications you try.

Warped Wood

Long-term exposure to high levels of humidity can warp hardwoods and wood furniture in your home. Often the damage is irreversible, especially if the damage is wide spread or affects a large area, such as a hardwood floor. Wood furniture and floors are expensive investments that need protection from high humidity.

Strained HVAC Systems

High humidity levels make the air feel hotter, so it’s natural to turn on the air conditioning. This puts an added strain on your HVAC system, which may already be struggling due to age, dirty filters, or a lack of preventative maintenance. The extra work may even shorten the lifespan of the system.

Higher Utility Bills

The other nasty by-product of turning on the air conditioning more often is an increase in the utility bill. Obviously, the more the air is on, the more electricity is used. There are plenty of cost of living increases that are beyond our control, like gas and medical expenses. However, by keeping the humidity in your home or business under control, you can keep your air conditioner on less often and keep the utility bills down.









Luke Armstrong. “Issues From High Indoor Humidity Levels.” Web blog post. Restoration guides, Restoration Master Finder. 30 Aug 2017. 17 Nov 2017

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