9 Common Air Conditioner Myths You Need to Stop
Believing in Salt Lake City

When the summer heat settles over Salt Lake City, your air conditioner becomes one of the most important appliances in your home. However, with so much conflicting information out there, it’s easy to fall for common AC myths—many of which can lead to higher energy bills, inefficient cooling, and even system damage.

Here are nine widespread myths about air conditioners that every Salt Lake City homeowner should stop believing.

Myth #1: A Bigger AC Unit Cools Your Home Better

Many people think that a larger unit will cool their home faster and more effectively. In reality, an oversized AC can cause more problems than it solves. It may cool rooms quickly, but it won’t run long enough to remove humidity, leaving your home feeling clammy and uncomfortable. Additionally, frequent short cycles strain your system, potentially leading to premature breakdowns.

Solution: Always have your AC professionally sized to match your home’s unique square footage and insulation.

Myth #2: Lowering the Thermostat Will Cool Your Home Faster

Cranking your thermostat way down doesn’t speed up cooling. Your air conditioner works at the same pace no matter the setting—it just runs longer until reaching the set temperature.

Pro Tip: Set your thermostat to a reasonable temperature for comfort and efficiency, typically around 75°F to 78°F in summer.

Myth #3: Ceiling Fans Can Replace Your AC

While ceiling fans help circulate air and can make you feel cooler, they don’t actually lower the room’s temperature. Fans simply move air across your skin to create a wind-chill effect.

Tip: Use ceiling fans alongside your AC to feel cooler at a higher thermostat setting and save energy.

Myth #4: Closing Vents in Unused Rooms Saves Money

This myth can actually cause your system to work harder. Central air systems are balanced to circulate air evenly. Closing vents can disrupt this balance, causing pressure buildup and reducing efficiency.

Best Practice: Keep vents open to maintain proper airflow throughout your home.

Myth #5: Maintenance Isn’t Necessary Unless Something Breaks

Many homeowners skip regular AC maintenance, assuming it’s only needed when something goes wrong. However, preventive maintenance keeps your system running efficiently and helps avoid costly repairs down the road.

Reminder: Annual tune-ups can extend your AC’s lifespan and reduce your energy bills.

Myth #6: Air Filters Only Need to Be Changed Once a Year

Your air filter does much more than just trap dust—it protects your AC from dirt buildup and maintains indoor air quality. In Salt Lake City’s dry, dusty climate, filters can clog more quickly.

Recommendation: Check your filter monthly during heavy use and replace it every 1-3 months, depending on household conditions.

Myth #7: Thermostat Placement Doesn’t Matter

The location of your thermostat plays a crucial role in your AC’s performance. If it’s placed near a window, direct sunlight, or a heat-producing appliance, it may register temperatures inaccurately and run your AC longer than necessary.

Ideal Spot: Install your thermostat on an interior wall away from heat sources and direct sunlight.

Myth #8: Running Your AC All Day is More Efficient Than Turning It Off

Some homeowners believe leaving the AC on all day is better than cycling it on and off. In reality, it’s often more efficient to use programmable thermostats to adjust temperatures throughout the day.

Energy-Saving Tip: Set your thermostat to a higher temperature when you’re away and cool your home shortly before you return.

Myth #9: Newer Homes Don’t Need AC Maintenance

Even brand-new homes can suffer from AC issues if the system isn’t properly maintained. Construction debris, duct leaks, or improper installation can all affect performance.

Stay Proactive: Schedule routine inspections, even for newer systems, to ensure optimal operation from the start.

Beat the Heat in Salt Lake City With Smart Cooling Choices

Don’t let these myths cost you money or comfort. Whether you’re facing scorching Utah summers or just trying to lower your energy bills, understanding how your air conditioning works—and what actually saves energy—can make a huge difference.

For professional AC services in Salt Lake City, always trust certified technicians to inspect, repair, and optimize your cooling system.

Contact Golden Rule