Why your AC struggles at 105 degrees

Cool Talk with Hartzell's | Your HVAC Questions, Answered! · Jun 12, 2026 · 22m · transcript

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It is 105 degrees, your AC has run nonstop since noon, and the house is stuck at 78. Broken? Usually not. Central Oklahoma systems are sized to a 97 degree design day, and deep summer blows right past it while the equipment loses capacity exactly when the load peaks. I walk through what extreme heat does to compressors, capacitors, and attic ductwork, what is normal in a heat wave, what is a real failure, and the few things a homeowner can do that actually help the system survive the worst two weeks of the year. More episodes: https://hartzellsheatair.com/podcast/

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