No, 78 degrees Fahrenheit (26 degrees Celsius) is generally not too hot for a house in summer and is officially recommended by the U.S. Department of Energy as an energy-efficient target temperature while you are home and awake. While some individuals prefer a colder indoor climate, 78 degrees provides a comfortable baseline in many climates, especially when paired with ceiling fans to create a cooling wind-chill effect. However, if high outdoor humidity makes 78 feel muggy, you may need to lower the setting slightly. Verification: Monitor personal comfort levels and indoor humidity percentages to ensure a pleasant living environment.
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