Closing vents in spare bedrooms seems like a smart way to save energy, but it actually increases pressure in your duct system and forces your AC to work harder. Here is what building science says you should do instead to actually lower your cooling bills.
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Two-story homes are notorious for wild temperature swings between floors, leaving the upstairs sweltering while the first floor turns into a freezer. With the right combination of airflow adjustments, thermostat strategy, and targeted upgrades, you can balance temperatures within 2 to 4 degrees across both floors without cranking up the AC.
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Closing vents to save energy seems logical, but it actually increases static pressure in your duct system and forces your AC to work harder. Learn how to balance airflow properly and cut cooling costs by up to 20% without touching those vent levers.
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