Why AC Humidity Problems Happen in Newtown, PA

Suburban Newtown, PA home with central AC unit on a humid summer afternoon.

Summary

If you are dealing with AC humidity problems this August, you are not alone. Muggy summer weather in Bucks County makes it harder for your air conditioner to keep your home cool. High moisture levels force your system to work harder, which can lead to higher bills and uneven comfort.

How AC Humidity Problems Affect Cooling Performance

Humidity is the amount of water vapor is the air. In August, our region’s high dew points mean your AC must cool the air and remove moisture at the same time. This added strain can cause:

  • Longer cooling cycles
  • Less comfortable indoor air
  • Higher utility bills

Scheduling air conditioner maintenance in Newtown helps your system stay efficient in humid weather.

Condensation forming on a living room window during a humid day in Bucks County.

Signs of AC Humidity Problems in Your Home

Longer Run Times Without Enough Cooling

If your AC runs for hours but the home still feels warm, humidity could be the cause.

Sticky or Clammy Indoor Air

Even at 72°F, your skin may feel damp if humidity control is poor.

Musty Odors and Condensation

Moisture buildup can cause musty smells and condensation on windows.

Common Causes of AC Humidity Problems

  • Improperly Sized AC: Oversized systems cool air too quickly without removing enough moisture.
  • Dirty Filters or Coils: Restrict airflow and reduce dehumidification.
  • Low Refrigerant Levels: Weaken cooling capacity and humidity control.
  • Leaky Ductwork: Allows humid air into your system.

Many of these issues can be prevented with annual service. Learn more in our blog on Understanding the Need for Annual Air Conditioner Maintenance.

How to Fix AC Humidity Problems in Newtown, PA

Schedule Professional AC Maintenance

A seasonal tune-up from a licensed HVAC technician keeps your AC clean, improves efficiency, and helps prevent costly repairs that are often caused by excess humidity.

Install a Whole-Home Dehumidifier

Adding a whole-home dehumidifier allows your system to work with your AC to balance indoor comfort, reduce sticky air, and protect your home from mold and mildew that thrive in high-moisture conditions.

Seal and Repair Ductwork

Properly sealed and repaired ductwork prevents humid outdoor air from leaking inside, keeps conditioned air contained, and helps your AC system maintain even temperatures throughout every room.

Set Your Thermostat to “Auto”

Switching your thermostat fan setting to “Auto” instead of “On” allows your AC to remove more humidity during each cooling cycle, which improves comfort and lowers the risk of damp, clammy air lingering in your living space.

HVAC technician servicing an outdoor AC unit in a Newtown, PA backyard.

When to Call for AC Humidity Problem Repairs

Contact an HVAC professional if you notice:

  • Persistent sticky air inside your home
  • AC running constantly during humid weather
  • Rising energy bills without increased use

If your AC continues to struggle with Newtown’s summer humidity, you can get a quick estimate of replacement costs using our Instant HVAC Pricing Tool.

Frequently Asked Questions About AC Humidity

How can I tell if humidity if affecting my AC?

Look for clammy air, musty odors, condensation, and long cooling cycles.

Should I use “auto” or “on” for my fan setting?

“Auto” is best for reducing humidity.

Will a dehumidifier lower my cooling costs?

Yes. Removing moisture helps your AC work more efficiently.

Schedule Your AC Service Today

Don’t let AC humidity problems keep your home uncomfortable. Service First Heating & Air Conditioning can find the cause and fix it quickly.

Call us at 215-876-0486 or book your appointment online.

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