The hot and humid summers in Phoenix, Arizona, can get muggy and uncomfortable. You change the thermostat to a pleasant temperature. The air conditioning begins running as expected. But, even after your AC cycles, your home still feels moist and clammy.
That’s not very comfortable.
It can be disappointing 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. Local homeowners often have this experience.
Why? Temperature and humidity are two different things. The temperature only tells you how hot or cold the air is within your home. It doesn't measure the amount of moisture in the air. When humidity 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 easy troubleshooting steps you can try to reduce humidity in your Phoenix, Arizona, home. That way, you’ll know when you should call experts like the team at Integrity AC & Heating LLC for expert assistance.
Why a Home Can Feel Humid Even When the Temperature Is Cool
Indoor temperature is only part of what makes your home pleasant. Indoor humidity is another important factor. Most homes are the most comfortable when indoor relative humidity is 30-50 percent. When a home has high indoor humidity, the air feels hotter, more oppressive and stickier—even if the actual air temperature is cool.
Excess moisture 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 removing enough moisture.
Home Feels Humid? Here are 8 Common Causes
Living in Phoenix, Arizona, high humidity can be a frequent concern.
Plenty of area homeowners wonder the same question: Why does my house feel humid?
There could be multiple reasons. Identifying what's creating excess moisture is a good first step toward resolving the problem.
Let's look at several common reasons for elevated indoor humidity in Phoenix, Arizona:
1. Oversized Air Conditioner
An AC unit that's too big for your home cools down your home too quickly. The problem is an oversized AC often doesn’t remove humidity effectively because it turns off before completing a full cooling cycle.
2. Clogged Air Filter
A dirty air filter limits airflow throughout your HVAC system. This makes it harder for your equipment to control humidity while cooling your home.
3. Clogged Condensate Drain
Your AC removes moisture from your home’s air and and then it drains from the equipment through a condensate line. If that drain becomes blocked, moisture can't exit the system properly, contributing to higher indoor humidity.
4. Frozen Evaporator Coil
The evaporator coil extracts both heat and moisture from your home's air. Dirt buildup on the coil limits its effectiveness and often requires professional AC repair services to fix.
5. Leaky Ductwork
Ductwork carries cool air throughout your living space. Leaks in ductwork can pull warm, humid air from attics, crawl spaces or other uninhabited areas into your HVAC system. This extra moisture makes it more difficult to maintain comfortable humidity levels.
6. Thermostat Fan Set to “On” Change to “Auto”
If your thermostat fan is running on "On" instead of "Auto", the blower continues to operate after the cooling cycle ends. This can circulate moisture collected on the evaporator coil back into your home instead of letting it to drain away.
7. Extremely Humid Weather
During the area’s extremely humid summers, your HVAC system has to run longer to remove moisture from the air. Even when your AC is working properly, sometimes your home feels muggy because outdoor humidity continually enters your home through doors, windows and normal air leakage.
8. Aging Heating and Cooling Equipment
As home comfort systems wear out over time, they often become less capable at controlling humidity. HVAC maintenance enhances performance, boosts efficiency and helps detect worn-out parts. Neglecting regular air conditioning maintenance can decrease performance, including your system's ability to control moisture.
What You Can Check Before Calling an HVAC Technician
If your home feels humid, there are a few simple things you can check before scheduling service. These strategies are easy ways to improve indoor comfort by helping your AC or heating system remove moisture more efficiently.
- Replace or inspect the air filter. A clean HVAC air filter allows proper airflow, helping your system condition and dehumidify your home effectively.
- Confirm the thermostat fan is set to Auto. This allows moisture to drain away after each cooling cycle instead of being blown back into your living spaces.
- Check that supply and return vents are open and not covered up. Rugs or household furnishings over the vents or closed vents can restrict airflow throughout your home.
- Inspect for water around the indoor unit. Water near your AC equipment may indicate a clogged condensate drain or another drainage-related issue.
- Monitor how your air conditioner should run. If the AC is short cycling or turning on and off continuously, or it seems to run constantly without improving comfort, it's time to have the system inspected 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. DIY repairs may be tempting, but these repairs require specialized training and should always be left to a qualified HVAC technician.
Could You Benefit from a Whole-Home Dehumidifier?
If you have humidity in your house during summer or year-round moisture problems, a whole-home dehumidifier may be worth considering. As opposed to portable units that only remove humidity from one room or area, a whole-home dehumidifier works alongside your HVAC system to control humidity throughout your entire house.
Just one of Integrity AC & Heating LLC's indoor air quality solutions, a whole-home dehumidifier makes your home more comfortable while helping reduce the risk of mold, musty odors and excess moisture. It can be a great choice for homes in humid areas or properties that still have humidity even with a properly functioning AC.
Signs It's Time to Book HVAC Service
Home HVAC humidity issues often are caused by an hidden problem that requires professional repair. The technicians at Integrity AC & Heating LLC will evaluate refrigerant charge, airflow, blower performance and evaporator coils to identify why your system isn't removing humidity effectively. They can also inspect ductwork, condensate drainage and overall system sizing to pinpoint 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 potentially expensive repairs. That's why Integrity AC & Heating LLC offers an HVAC maintenance plan that makes regular inspections budget-friendly and stress-free.
If basic troubleshooting doesn't fix the problem, trust Integrity AC & Heating LLC for dependable HVAC service in Phoenix, Arizona.
Schedule HVAC service online or call 602-971-0567 today to restore your comfort.
