Humidity plays a huge role in how comfortable your home feels, especially during the hot, sticky summer months. While most people focus on temperature settings, many forget that moisture in the air is just as important. Too much or too little humidity can affect your health, damage your home, and even make your air conditioner work harder than it should.
So, what should indoor humidity be in summer? On average, indoor humidity should be at 30-50% in the summer months. In this blog, we’ll break down why humidity matters and how you can maintain healthy levels for better comfort and energy efficiency.
The Ideal Indoor Humidity Range for Summer
In general, the ideal indoor humidity level in summer should be between 30% and 50%. At this range, your home will feel comfortable, your air conditioner will run more efficiently, and you’ll avoid many of the issues that come with excess or insufficient moisture.
Going above 60% can make your home feel muggy and encourage mold, mildew, and dust mites. On the other hand, if the humidity dips below 30%, the air becomes too dry, leading to dry skin, irritated sinuses, and even cracks in wooden furniture or floors.
Keeping humidity in the recommended range isn’t just about comfort—it’s a key part of maintaining your HVAC system and your indoor air quality.
Why Humidity Matters in the Summer
High humidity in summer doesn’t just feel uncomfortable. It can have a noticeable impact on your health, your home, and your utility bills. Here’s how:
Your body can’t cool down efficiently
When the air is too humid, sweat doesn’t evaporate as easily, making you feel hotter and more uncomfortable.
It strains your air conditioner
AC units cool your home by removing both heat and moisture. Excess humidity forces your system to work harder, which can lead to breakdowns and higher energy costs.
It promotes mold and mildew
Humid air can create the perfect environment for mold growth, especially in bathrooms, basements, and around windows.
It damages your home
Wood expands and warps in moist conditions, while paint may peel and metal fixtures can rust.
Low humidity, while less common in summer, can still be a problem, causing dry skin, nosebleeds, and even static electricity buildup.
How to Tell If Your Humidity Levels Are Off
You don’t need to be an HVAC technician to spot humidity issues. Here are some warning signs that your indoor air might be out of balance:
- Your home feels clammy even when it’s cool.
- Condensation forms on windows or walls.
- You notice musty smells or see visible mold.
- Your allergies or asthma symptoms get worse.
- Wood floors or furniture begin to warp or crack.
A quick and easy way to check your humidity levels is with a hygrometer, a small device that reads the moisture content in the air. Many smart thermostats even come with built-in humidity sensors, giving you real-time readings and alerts.
How to Maintain Ideal Indoor Humidity in the Summer
Maintaining balanced humidity in your home starts with your HVAC system, but there are other tools and techniques you can use to stay comfortable all summer long.
1. Use a Dehumidifier
If your home tends to trap moisture, especially in rooms like basements or laundry areas, a whole-house dehumidifier can help regulate levels and reduce the strain on your AC unit.
2. Ensure Proper Ventilation
Use exhaust fans in kitchens and bathrooms to move moisture out of your home. Also, avoid air-drying clothes indoors during humid days.
3. Maintain Your Air Conditioner
Regular AC maintenance is one of the best ways to manage humidity. A well-functioning unit removes both heat and moisture effectively. Dirty filters or coils can make your system inefficient and leave your home feeling sticky.
4. Seal Air Leaks
Warm, moist air can sneak in through windows, doors, or poorly insulated attics. Sealing these areas can help keep your indoor air dry and comfortable.
MSCO Helps You Stay Comfortable—Even in High Humidity
If you’re struggling with indoor humidity in the summer, the experts at MSCO Heating & Cooling can help. We’ve been keeping homes comfortable in the Virginia Beach area for more than 60 years, and we know how to balance temperature and moisture to create the ideal indoor climate.
Our team can inspect your HVAC system, check your humidity levels, and recommend the right solution—whether it’s maintenance, repairs, or indoor air quality devices. We also specialize in energy-efficient Trane systems that work hard to keep your home cool while managing humidity more effectively.
Call MSCO for Expert Humidity Control and HVAC Service
Now that you know what indoor humidity should be in summer, the next step is making sure your home stays within that healthy range. Whether you’re dealing with musty rooms, window condensation, or just general discomfort, MSCO is here to help.
Call us today to improve your home’s comfort and indoor air quality. Let MSCO help you take control of your home’s comfort!
