The warm summers in Wilmington, Delaware, can get muggy and uncomfortable. You change the thermostat to a ideal temperature. The air conditioner starts up right away. But, even after your air conditioner operates, your home still feels damp and sticky.
That’s not very comfortable.
It can be frustrating when the air conditioner seems to be doing its job, yet your home doesn't actually feel pleasant. If your rooms feel humid but thermostat says cool, you're not alone. Many area homeowners have this problem.
Why? Temperature and humidity are two different things. Your temperature only tells you how comfortable the air is within your home. It doesn't measure the amount of moisture in the air. When indoor moisture is too high, your home can feel several degrees warmer than the thermostat indicates, due to indoor humidity problems.
In this blog, you'll learn how humidity affects your indoor comfort levels, common reasons your home feels humid even when the temperature is correct and simple troubleshooting steps you can try to reduce humidity in your Wilmington, Delaware, home. That way, you’ll know when you should contact experts like the team at Brandywine Heating & Air for support.
Why a Home Can Feel Humid Even When the Temperature Is Nice and Cool
Indoor temperature is only part of what makes your home enjoyable. Indoor humidity is also an equally important element to consider. Many homes are generally more comfortable when indoor relative humidity falls 30-50 percent. When a home has high indoor humidity, the air feels less comfortable, more oppressive and stickier—even if the actual air temperature is cool.
Too much indoor moisture can also contribute to dangerous mold growth, mildew, bad smells and other indoor air quality issues. That's why your house feels humid but the AC is running—your system may be lowering the temperature of the air without pulling out enough moisture.
Reasons Your Home Feels Humid Even with the AC Running
Residing in Wilmington, Delaware, high humidity can be a problem.
Many area homeowners deal with the same question: Why does my home feel so humid?
There could be multiple reasons. Understanding what's creating humidity problems is a good first step toward solving the problem.
Here are several common reasons for high indoor humidity levels in Wilmington, Delaware:
Oversized Air Conditioner
1. AC is Too Large
An AC unit that's bigger than your home 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 complete cooling cycle.
2. Clogged Air Filter
A blocked air filter restricts airflow throughout your HVAC system. This makes it harder for your equipment to extract humidity while cooling your home.
3. Clogged Condensate Drain
Your air conditioning collects moisture from your home’s air and drains it outside through a condensate line. If that drain becomes blocked, moisture can't exit the system properly, contributing to increased humidity levels.
4. Icy Evaporator Coil
The evaporator coil extracts both heat and moisture from your home's air supply. Dirt buildup on the coil decreases its effectiveness and often requires professional AC repair services to fix.
5. Loose Ductwork
Ductwork transports cool air throughout your house. Openings in ductwork can pull warm, humid air from attics, crawl spaces or other uninhabited areas into your HVAC system. This additional moisture makes it more difficult to maintain comfortable humidity throughout your home.
6. Thermostat Fan Set to “On” Switch to “Auto”
If your thermostat fan is set to "On" instead of "Auto", the blower continues to operate after the cooling cycle completes. This can blow moisture collected on the evaporator coil back into your home instead of giving it time for it to drain away.
7. Exceptionally Humid Weather
During the area’s very humid summers, your HVAC system has to run longer to remove moisture from the air. Even when your air conditioner is operating correctly, sometimes your home feels muggy because outdoor humidity continues to seep into your home through doors, windows and normal air leakage.
8. Older Heating and Cooling Equipment
As HVAC systems age, they often become less efficient at controlling humidity. HVAC maintenance improves performance, increases efficiency and helps identify worn-out parts. Neglecting regular air conditioning maintenance can decrease performance, including your system's ability to control moisture.
What You Can Check Before Scheduling an HVAC Technician
If your home feels humid, there are several simple things you can check before requesting service. These strategies are easy ways to improve indoor comfort by helping your AC or heating system remove moisture more efficiently.
- 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 circulated back into your living spaces.
- Check that supply and return vents are open and unblocked. Rugs or furniture over the vents or closed vents can reduce airflow throughout your home.
- Inspect for water around the indoor unit. Water near your AC equipment may signal a clogged condensate drain or another drainage issue.
- Know how your air conditioner 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 internal parts. DIY repairs may be tempting, but these repairs require advanced training and should always be handled by a qualified HVAC technician.
Should You Get a Whole-Home Dehumidifier?
If you deal with humidity in your house during summer or year-round moisture problems, a whole-home dehumidifier may be the right choice. Compared with portable units that only work in one room or area, a whole-home dehumidifier connects to your HVAC system to control humidity throughout your entire house.
Just one of Brandywine Heating & Air's indoor air quality solutions, a whole-home dehumidifier helps keep your home more comfortable while lowering the risk of mold, musty odors and excess moisture. It can be a great choice for homes in humid climates or properties that still have humidity even with a properly functioning air conditioner.
Signs It's Time to Book HVAC Service
Persistent HVAC humidity issues often point to an underlying problem that requires professional repair. The technicians at Brandywine Heating & Air will evaluate refrigerant charge, airflow, blower performance and evaporator coils to determine why your system isn't removing humidity effectively. They can also inspect 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 find small problems before they become major breakdowns. That's why Brandywine Heating & Air offers an HVAC maintenance plan that helps make regular inspections easy and affordable.
If simple troubleshooting doesn't fix the problem, trust Brandywine Heating & Air for dependable HVAC service in Wilmington, Delaware.
Schedule HVAC service online or call 302-246-7971 today to fix your indoor humidity issues once and for all.