Why Your AC Runs All Day in August (And What Static Pressure Has to Do With It)
If your AC runs continuously from noon to 8 PM without dropping the thermostat, high static pressure in your ductwork could be choking your system's airflow.
What high static pressure does to a Florida AC
Static pressure is the resistance your blower motor fights to push air through your filter, indoor evaporator coil, and ductwork. Think of it like trying to breathe through a pinched straw: even if your compressor is healthy, restricted airflow slashes cooling output and drives electric bills up.
In 95°F August weather, a system with high static pressure runs nonstop for hours, overheats its blower motor, and can even cause ice on the refrigerant line because the coil gets too cold from lack of warm return air.
Common airflow bottlenecks we measure on service calls
Using a digital manometer, our technicians commonly find three culprits: overly restrictive MERV-13+ filters on systems not designed for them, a matted evaporator coil, or undersized return plenums and kinked attic flex ducts.
Before assuming you need a bigger AC unit, fix the breathing problem. Professional air duct repair and return upgrades or a 90-minute precision tune-up often restores lost capacity immediately.
Book a static pressure and airflow inspection
We test static pressure and repair restrictive ductwork in Tampa, Dunedin, Trinity, and Lakeland.
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