Air conditioning keeps homes across St. Louis County, St. Charles County, and surrounding cities comfortable through hot summers. But misinformation about AC use leads to wasted energy and higher bills. Let’s clear up some common myths.

Myth 1: Bigger Units Work Better

Oversized systems short-cycle, waste energy, and leave rooms uncomfortable. Proper sizing is critical.

Myth 2: Closing Vents Saves Energy

Closing vents increases duct pressure, which can damage your system and reduce efficiency.

Myth 3: Maintenance Isn’t Necessary

Skipping annual inspections reduces lifespan and increases repair costs.

Myth 4: All Filters Are the Same

Cheap filters often restrict airflow or fail to trap fine particles. The right MERV rating ensures balanced air quality and efficiency.

Myth 5: Lowering the Thermostat Cools Faster

Your system cools at a steady rate. Extreme thermostat settings only waste energy.

Myth 6: Ceiling Fans Lower Room Temperature

Fans don’t cool rooms; they make you feel cooler by moving air across your skin.

Myth 7: DIY Refrigerant Refills Are Safe

Refrigerant handling requires certification. Improper charging can damage the compressor and harm the environment.

Conclusion

Avoiding these myths saves energy, reduces repair costs, and keeps your AC running efficiently. For homeowners in St. Louis County, St. Charles County, and surrounding cities, working with a trusted HVAC professional ensures long-lasting comfort and lower bills.