Updated: 3/5/2024

Your Home Humidity Levels (and How to Reduce Them)

We spend a lot of time thinking about properly heating and cooling our homes, especially with summer coming right around the corner. But do you ever think about the humidity levels in your home? What is the ideal home humidity? Controlling the humidity inside of your home can be just as crucial to living comfortably as controlling the temperature.

You don’t want to be inside your comfy home during the hot days of summer with every fan pointed at you. And you don’t want to spend the winter months with every blanket you owned wrapped around you. As residential HVAC experts, we here at Laury Heating Cooling & Plumbing completely understand. Live more comfortably this summer by learning about the ideal indoor humidity level for your home.

So… What is Humidity?

Hydrometer with Humidity

Before we can figure out the perfect humidity for your home, let’s ask a quick question: what exactly is humidity?

You might have a rough idea that humidity is the amount of water in the air, and you’d technically be correct! However, it’s a little more complex than just that. To understand what humidity is, we need to talk about the difference between relative humidity and absolute humidity.

What Is The Ideal Home Humidity?

Absolute Humidity

“Absolute humidity” is the mass (mass = how much) of water in the air, divided by the mass of air that is in a given space. Absolute humidity is an equation that looks at the literal amount of mass that moisture has in the air around you. Absolute humidity is expressed as grams of moisture per cubic meter of air (g/m³).

Relative Humidity

“Relative humidity” is the humidity reading that you are probably more familiar with. To find out the ideal home humidity for yourself, this is also the measurement we are going to use. While absolute humidity measures the amount of water vapor in the air, relative humidity measures the current level of moisture in the air out of how moist the air could be.

So, when you see your humidity reading at 40%, it simply means that the air around you is 40% as moist as it could be.

Humidity and Feeling Comfortable

Do you know why humans naturally feel so uncomfortable in really humid climates? Your skin uses the air around it to get rid of moisture on your body. So, when the humidity level is near 100%, the air cannot absorb the moisture on your body, namely sweat.

Sweat is your body’s natural air conditioner. When you sweat, your body attempts to maintain its ideal temperature (98.6). When you can’t get rid of that extra moisture and cool yourself off, it’s much harder to feel comfortable.

Finding the Ideal Humidity Level in a House

Home Comfort

So now that we’ve talked about comfort levels, you can probably guess what we’ll say next. The ideal humidity level for your home is going to be relative to you and your family. It will depend mostly on the time of year, what kind of clothes you’re wearing, and where your family is naturally comfortable.

Research shows that the ideal relative humidity for your home is between 40%-60%. However, to discourage the growth and spread of mold, levels should be kept below 50%. But, again, adjust this to match your comfort levels. This relative humidity in your home should also scale with the outdoor absolute humidity.

As you probably know, absolute humidity levels change along with the temperature and seasons. In the summer, the air contains more moisture, and in the winter, it contains much less moisture.

Here’s a scale to better understand ideal humidity levels:
  • For an outdoor temperature over 50˚F, indoor humidity levels shouldn’t exceed 50%
  • With an outdoor temperature over 20˚F, indoor humidity levels shouldn’t exceed 40%
  • Outdoor temperature between 10˚F and 20˚F, indoor humidity levels shouldn’t exceed 35%
  • For an outdoor temperature between 0˚F and 10˚F, indoor humidity levels shouldn’t exceed 30%
  • Outdoor temperature between -10˚F and 0˚F, indoor humidity levels shouldn’t exceed 25%
  • With an outdoor temperature between -20˚F and -10˚F, indoor humidity levels shouldn’t exceed 20%
  • Outdoor temperature at -20˚F or lower, indoor humidity levels shouldn’t exceed 15%

So, you will need to adjust your humidity levels as the year goes on. But what happens when you don’t have your humidity at the ideal level?

Issues with Low Humidity

When your home is too dry, there are several things you might notice:
  • Itchy or dry skin
  • More vulnerable to cold and infection
  • Damage to wood furniture and hardwood floors
  • Respiratory conditions may worsen, as dry air aggravates the airways.
  • Increased virus survival rates, suggesting a higher risk of infections in drier environments.

Issues with High Humidity

Likewise, when the humidity is too high in your home, you’re probably going to notice the effects.

  • High humidity promotes the growth and spread of mold
  • Those who suffer from asthma and allergies may experience worsened symptoms
  • Trouble sleeping in uncomfortable conditions
  • Moisture problems in your home – You might notice condensation on your windows. This excessive moisture can cause damage to your furniture and fixtures.

How to Achieve the Ideal Home Humidity Level

So now that we know what can go wrong, what can we do to make things go right? Well, here’s the first step. If you don’t have one, installing a humidifier is going to be extremely beneficial in the winter months.

Remember that in the summertime the air will naturally be humid, so you can safely store away the humidifier for those dry winter months. Keeping your home at the perfect humidity level is going to do wonders for your family’s comfort. Consequently, keeping an ideal home humidity level is also crucial to the health of your home and its structure.

It’s true! Your indoor air quality directly affects your family’s health and also the health of your home. From excaserbating existing skin and asthmatic conditions to deteriorating wooden upholstery and furniture, indoor air quality plays a huge role in your home comfort.

To sum it all up for you, if you already have your humidifier, make sure you’re keeping that ideal home humidity level properly humid. And if you don’t have a humidifier, our team installs quality humidifiers for our valued customers. In addition, if you’d like to learn more about indoor air pollution and how you can prevent it from happening in your home, check out this blog we wrote!

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