The warm summers in Wilmington, Delaware, can get muggy and uncomfortable. You set the thermostat to a comfortable temperature. The air conditioner begins running automatically. But, even after your cooling system cycles, your home still feels damp and sticky.
Now, you’re cool and damp.
It can be annoying when the air conditioner seems to be doing its job, yet your home doesn't actually feel comfortable. If your rooms feel humid but thermostat says cool, you're in good company. It happens a lot.
Why? Temperature and humidity are two different measurements in your home. The 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 moisture levels are too high, your home can feel much hotter than the thermostat indicates, due to indoor humidity problems.
In this article, you'll learn how humidity affects your comfort, common reasons your home feels humid even when the temperature is correct and basic 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 expert assistance.
Why Your Home Can Feel Humid Even If the Temperature Is Right
Indoor temperature is only part of what makes your house pleasant. Indoor humidity is also an equally important element to consider. Most homes are typically more comfortable when indoor relative humidity is between 30% and 50%. When a home has high indoor humidity, the air feels hotter, more oppressive and stickier—even if the actual air temperature is cool.
High humidity can also encourage 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 chilling the air without extracting enough moisture.
Home Feels Humid? Here are 8 Common Causes
Residing in Wilmington, Delaware, muggy conditions can be a problem.
Plenty of area homeowners deal with the same question: Why does my home feel so humid?
There could be multiple reasons. Determining what's creating excess humidity is a key first step toward resolving the problem.
Here are several common reasons for indoor humidity problems in Wilmington, Delaware:
1. Oversized Air Conditioner
An AC that's larger than your home actually needs lowers the temperature in your home too quickly. The problem is an oversized AC often doesn’t reduce humidity effectively because it turns off before completing a complete cooling cycle.
2. Blocked Air Filter
A clogged air filter limits airflow throughout your HVAC system. This makes it harder for your equipment to extract humidity while cooling your home.
3. Clogged Condensate Drain
Your AC collects moisture from your indoor air and that excess water drains from the unit through a condensate line. If that drain becomes restricted, moisture can't leave the system properly, contributing to increased humidity levels.
4. Icy Evaporator Coil
The evaporator coil removes both heat and moisture from your home's indoor air. Dirt buildup on the coil reduces its effectiveness and often requires professional AC repair services to restore performance.
5. Loose Ductwork
Ductwork transports cool air throughout your home. Openings in ductwork can draw warm, humid air from attics, crawl spaces or other unused areas into your HVAC system. This additional moisture makes it more challenging to maintain comfortable humidity throughout your home.
6. Thermostat Fan Running on “On” Change to “Auto”
If your thermostat fan is set to "On" instead of "Auto", the blower continues running after the cooling cycle ends. This can circulate 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 especially humid and hot summers, your HVAC system has to operate more to remove moisture from the air. Even when your air conditioner is functioning as designed, sometimes your home feels muggy because outdoor humidity keeps entering your home through doors, windows and normal air leakage.
8. Poorly Maintained Heating and Cooling Equipment
As home comfort systems wear out over time, they often become less capable at controlling humidity. HVAC maintenance improves performance, increases efficiency and helps identify worn-out parts. Skipping regular air conditioning maintenance can reduce performance, including your system's ability to remove moisture.
What You Can Check Before Contacting an HVAC Technician
If your house feels humid, there are some simple things you can check before requesting service. These strategies are easy ways to improve indoor comfort by helping your heating and cooling system remove moisture more effectively.
- Replace or inspect the air filter. A clean HVAC air filter allows proper airflow, helping your system cool and dehumidify your home more efficiently.
- Verify the thermostat fan is set to Auto. This allows moisture to flow out after each cooling cycle instead of being circulated back into your living spaces.
- Check to ensure your supply and return vents are open and not covered up. Furniture over the vents or closed vents can limit airflow throughout your home.
- Inspect for water around the indoor unit. Water by your AC equipment may signal a clogged condensate drain or another drainage-related issue.
- Pay attention to how your air conditioning should run. If the AC is short cycling or turning on and off repeatedly, or it seems to run constantly without cooling your home, it's time to have the system checked by a professional.
Even if your thermostat still says cool but house feels humid, do not try repairs with refrigerant, electrical components or internal HVAC parts. Handling these repairs yourself may be tempting, but these repairs require specialized training and should always be performed 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 reduce 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 damp climates or properties that struggle with humidity even with a properly functioning AC.
Signs It's Time to Book HVAC Service
Ongoing HVAC humidity issues often point to an underlying problem that needs professional repair. The technicians at Brandywine Heating & Air will check refrigerant charge, airflow, blower performance and evaporator coils to identify why your system isn't managing humidity effectively. They can also evaluate ductwork, condensate drainage and overall system sizing to identify the root cause.
We also can get you set up with a heating and cooling tune-up. Seasonal seasonal tune-ups help identify small problems before they become complicated, costly repairs. That's why Brandywine Heating & Air offers an HVAC maintenance plan that makes regular inspections budget-friendly and stress-free.
If basic troubleshooting doesn't fix your home’s humidity issues, trust Brandywine Heating & Air for dependable HVAC service in Wilmington, Delaware.
Schedule HVAC service online or call 302-246-7971 today to take care of high indoor humidity issues for good.