When the summer heat sets in, homeowners rely on their air conditioning systems to stay comfortable. But with so much information (and misinformation) floating around, it’s easy to fall for common myths that can impact your comfort, utility bills, and even the lifespan of your AC unit. In this blog, we’ll tackle some of the most widespread air conditioning myths, explain the science behind them, and offer practical tips to help you get the most out of your system.
Myth 1: Setting the Thermostat Lower Cools Your Home Faster
It’s a common belief that cranking the thermostat down to the lowest setting will cool your home more quickly. In reality, air conditioning systems work at a consistent rate, regardless of the temperature you set. Lowering the thermostat simply tells your AC to run longer, not faster. This misconception can lead to unnecessary energy use and higher utility bills.
The best approach is to set your thermostat to the highest comfortable temperature, typically around 78°F when you’re home. This helps balance comfort and energy savings.
Myth 2: Ceiling Fans Reduce Room Temperature
Many people believe that ceiling fans actually lower the temperature in a room. While fans can make you feel cooler by moving air across your skin and speeding up the evaporation of sweat, they don’t actually lower the room’s temperature. In fact, leaving fans on in empty rooms wastes energy.
Using fans while you’re in the room can help you feel up to 4°F cooler, allowing you to set your thermostat higher and save energy. Just remember to turn fans off when you leave the room.
Myth 3: Bigger Air Conditioners Mean Better Cooling
It might seem logical that a larger AC unit would cool your home more efficiently, but that’s not the case. An oversized air conditioner will cool the space quickly, but it will cycle on and off more frequently, leading to uneven temperatures, excess humidity, and increased wear and tear on the system.
Proper sizing, based on your home’s square footage, insulation, and other factors, is crucial for comfort and efficiency. The Air Conditioning Contractors of America (ACCA) recommends professional load calculations to determine the right size unit for your home. At Aspire Heating & Cooling, our team uses industry-standard methods to ensure your system is perfectly matched to your needs.
Myth 4: Air Filters Only Need to Be Changed Once a Year
Neglecting to change your air filter can seriously impact your AC’s performance. A dirty filter restricts airflow, making your system work harder and potentially leading to breakdowns or higher energy bills. Most professionals recommend checking your filter every month and replacing it at least every three months, or more often if you have pets or allergies. Regular filter changes not only improve air quality but also help your system run more efficiently and last longer.
Myth 5: Closing Vents in Unused Rooms Saves Energy
Closing supply vents in rooms you don’t use might seem like a smart way to cut costs, but it can actually backfire. Modern HVAC systems are designed to cool your entire home as a single, balanced system. Blocking vents increases pressure in the ducts, which can cause leaks, reduce efficiency, and lead to unnecessary wear on your system.
The best way to save energy is by sealing air leaks, adding insulation, and using programmable thermostats, rather than closing vents.
Myth 6: Maintenance Isn’t Necessary Until There’s a Problem
It’s easy to overlook your air conditioning system when it seems to be working fine, but regular maintenance is essential for optimal performance. Skipping annual tune-ups can lead to decreased efficiency, higher utility bills, and even unexpected breakdowns during the hottest days of the year.
Regular HVAC maintenance can reduce the risk of costly repairs by up to 95% and lower energy costs by 5–40%. Scheduling routine maintenance with a trusted professional like Aspire Heating & Cooling ensures your system remains in peak condition.
Myth 7: Air Conditioners Only Cool the Air
While cooling is the primary function, air conditioners also play a significant role in dehumidifying your home. As warm air passes over the evaporator coil, moisture is removed, helping control indoor humidity levels. This not only enhances comfort but also helps protect your home from mold and mildew growth. For homes with persistent humidity issues, consider discussing options for whole-home dehumidification with our team.
How to Get the Most from Your Air Conditioning System
Understanding the facts about your AC system can help you maximize comfort, save money, and extend the life of your equipment. Simple steps like setting your thermostat wisely, using fans strategically, keeping vents open, and scheduling regular maintenance all contribute to a more efficient home.
If you’re looking for personalized advice or want to ensure your system is ready for the season, contact Aspire Heating & Cooling today. Our team is committed to providing reliable, honest solutions to keep your home comfortable year-round. Don’t let myths stand in the way of your comfort—trust Aspire Heating & Cooling for the expertise you deserve!
