Think you know how your HVAC system works? Some of the most common homeowner assumptions are actually costing comfort — and sometimes money. Here’s myth number one: cranking the thermostat way down will cool your home faster. In reality, it just makes the system run longer, and in some cases, can even lead to issues like frozen coils. Your system cools at the same rate no matter what — it’s not a gas pedal. Myth number two: turning the A/C up while you’re away saves energy, then cooling it back down when you get home. Contractors say that often backfires — leaving homeowners uncomfortable for hours, without meaningful savings.

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