Humidity: Changes with the Seasons

When the weather heats up, high humidity levels are often close behind. Seasonal humidity can affect indoor home comfort, so managing the humidity in your home during all seasons can make the time you spend there much more enjoyable.

People often describe summer to be "heavy," "sticky," and "muggy," while winter air can feel "dry," "crisp," and "bitter." These descriptions are related to the feel of the air due to the differing amounts of moisture present at different times of the year.

What is Humidity?

The amount of water vapor in the air around you.

The optimum humidity level in your home depends on your personal preference, clothing, and level of physical activity.

  • Comfortable: 30-60%
  • Recommended: 45-55% ASHRAE (American Society of Heating, Refrigeration and Air Conditioning Engineers) suggests this range of humidity to manage health effects and illnesses.)
  • High: 55-80%

How Does Humidity Change With the Seasons?

Summer: Warm, summer air "holds" more moisture, so the humidity is higher.

Winter: Cold, winter air contains less water, so the humidity is lower.

Extreme Humidity Levels Create Problems

Too much or too little moisture in the air can cause a variety of health threats and illnesses.

The optimum relative humidity range is 45% - 55%. At higher and lower levels of humidity, health threats and illnesses can increase. These include: bacteria, viruses, fungi, mites, respiratory infections, allergic rhinitis and asthma, chemical interactions, and ozone production.

Issues Caused by High or Low Humidity

Low Humidity
  • Dry and itchy skin
  • Susceptibility to colds and infection
  • Damage to wood furniture and floors
High humidity
  • Mold growth
  • Muggy conditions/General discomfort

How Can You Achieve the Ideal Home Humidity Levels for All Seasons?

In the Summer

  • Discontinue use of humidifiers
  • Use air conditioning to remove moisture indoors
  • Use exhaust fans

In the Winter

  • Use room humidifiers
  • Add live houseplants
  • Place water basins near your heating system
  • Add whole house humidifier

If you're in need of repairs or maintenance for your home air conditioning system, call AC Express right away! Our certified technicians can respond same-day. Call now! (512) 866-5520

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