Why it matters to you
Houston's Gulf Coast air carries a lot of moisture for much of the year, so your air conditioner is also your main dehumidifier. If indoor RH stays above 60 percent with the AC running, the house can feel muggy at a cool thermostat setting and give mold a foothold, often a sign of oversized equipment, short cycling, or airflow problems.
Practical guidance
An inexpensive digital hygrometer shows your indoor RH; check a few rooms on hot afternoons and after rain. If readings stay above 60 percent with the AC running, ask a licensed technician to check sizing, airflow, and run times, and whether variable-speed equipment or a whole-home dehumidifier makes sense.