The warm summers in Marshalltown, Iowa, can get muggy and uncomfortable. You change the thermostat to a pleasant temperature. The air conditioner starts up right away. But, even after your air conditioner operates, your home still feels moist and clammy.
Not a great feeling.
It can be frustrating when the air conditioner appears to work properly, yet your home doesn't actually feel pleasant. If your rooms feel humid but thermostat says cool, you're not the only homeowner. Many area homeowners have this problem.
Why? Temperature and humidity are two different things. Your temperature only tells you how hot or cold the air is within the space. It doesn't measure how much moisture is in the air. When humidity levels are very high, your home can feel much hotter than the thermostat indicates, due to indoor humidity problems.
In this blog, you'll learn how humidity affects your home comfort, common reasons your home feels humid even when the temperature is comfortable and simple troubleshooting steps you can try to reduce humidity in your Marshalltown, Iowa, home. That way, you’ll know when you should call experts like the team at Kapaun & Brown for professional help.
Why a Home Can Feel Humid Even If the Temperature Is Nice and Cool
Indoor temperature is only part of what makes your living space pleasant. The amount of moisture in the air is an extremely important element to consider. Many homes are the most comfortable when indoor relative humidity is in the 30-50% range. When a home has high indoor humidity, the air feels warmer, heavier and stickier—even if the actual air temperature is cool.
Too much indoor moisture can also promote dangerous mold growth, mildew, musty odors and other indoor air quality issues. That's why your house feels humid but the AC is running—your system may be chilling the air without pulling out enough moisture.
8 Common Reasons Your Home Feels Humid
Making your home in Marshalltown, Iowa, excess moisture can be a frequent concern.
Many area homeowners ask the same question: Why does my home feel so humid?
There are a variety of common explanations. Understanding what's creating humidity problems is a key first step toward solving the problem.
Below are several common reasons for elevated indoor humidity in Marshalltown, Iowa:
1. AC is Too Large
An AC that's larger than your home actually needs cools down your home too quickly. The problem is an oversized AC often doesn’t eliminate humidity effectively because it stops operating before completing a full cooling cycle.
2. Dirty Air Filter
A clogged air filter restricts airflow throughout your HVAC system. This makes it challenging for your equipment to extract humidity while cooling your home.
3. Obstructed Condensate Drain
Your air conditioner collects moisture from the air in your home and and then it drains from the equipment through a condensate line. If that drain becomes clogged, moisture can't exit the system properly, contributing to excess moisture indoors.
4. Frozen Evaporator Coil
The evaporator coil pulls both heat and moisture from your home's indoor air. Dirt buildup on the coil decreases its effectiveness and often requires professional AC repair services to restore performance.
5. Damaged Ductwork
Ductwork carries cool air throughout your living space. Gaps in ductwork can allow warm, humid air from attics, crawl spaces or other uninhabited areas into your HVAC system. This extra moisture makes it harder to maintain comfortable humidity conditions.
6. Thermostat Fan Set to “On” Switch to “Auto”
If your thermostat fan is set to "On" instead of "Auto", the blower continues running after the cooling cycle is finished. This can push moisture collected on the evaporator coil back into your home instead of allowing it to drain away.
7. Extremely Humid Weather
During the area’s very humid summer weather, your HVAC system has to work harder to remove moisture from the air. Even when your air conditioning is working properly, sometimes your home feels muggy because outdoor humidity continues to seep into your home through doors, windows and normal air leakage.
8. Older HVAC Equipment
As heating and cooling systems get older, they often become less capable at controlling humidity. HVAC maintenance optimizes performance, improves efficiency and helps find worn-out parts. Neglecting regular air conditioning maintenance can decrease performance, including your system's ability to remove moisture.
Simple Checks to Make Before Scheduling an HVAC Technician
If your house feels humid, there are several simple things you can check before booking service. These simple troubleshooting steps are easy ways to improve indoor comfort by helping your HVAC system remove moisture more effectively.
- Replace a dirty air filter. A clean heating and cooling system air filter allows proper airflow, helping your system cool and dehumidify your home effectively.
- Make sure the thermostat fan is set to Auto. This allows moisture to leave the system after each cooling cycle instead of being sent back into your living spaces.
- Make sure supply and return vents are open and unblocked. Furniture over the vents or closed vents can reduce airflow throughout your home.
- Check for water around the indoor unit. Water by your AC equipment may suggest a clogged condensate drain or another drainage-related issue.
- Monitor how your air conditioning should run. If the AC is short cycling or turning on and off frequently, or it seems to run constantly without improving comfort, it's time to have the system checked by a professional.
Even if your thermostat still says cool but house feels humid, do not perform repairs involving refrigerant, electrical components or system components. DIY repairs may be tempting, but these repairs require advanced training and should always be left to a qualified HVAC technician.
Should You Get a Whole-Home Dehumidifier?
If you struggle with humidity in your house during summer or year-round moisture problems, a whole-home dehumidifier may be a good option. Compared with portable units that only work in one room or area, a whole-home dehumidifier works alongside your HVAC system to control humidity throughout your entire house.
Just one of Kapaun & Brown's indoor air quality solutions, a whole-home dehumidifier makes your home more comfortable while reducing the risk of mold, musty odors and excess moisture. It can be especially helpful for homes in humid climates or properties that continue to have humidity even with a properly functioning AC.
When You Need to Book HVAC Service
Persistent HVAC humidity issues often point to an hidden problem that requires professional repair. The technicians at Kapaun & Brown will inspect refrigerant charge, airflow, blower performance and evaporator coils to determine why your system isn't controlling humidity effectively. They can also check ductwork, condensate drainage and overall system sizing to find the root cause.
We also can get you set up with a heating and cooling tune-up. Regular seasonal tune-ups help catch small problems before they become major breakdowns. That's why Kapaun & Brown offers an HVAC maintenance plan that makes regular inspections cost-effective and hassle-free.
If basic troubleshooting doesn't solve your home’s humidity issues, trust Kapaun & Brown for dependable HVAC service in Marshalltown, Iowa.
Schedule HVAC service online or call 641-321-6747 today to fix your indoor humidity issues once and for all.