Blog Common HVAC Myths Debunked: What You Need to Know Aug 26, 2025

As homeowners, everyone strives to maintain a comfortable indoor environment, and ensuring your HVAC system operates efficiently is crucial for achieving this goal. However, a slew of myths about HVAC systems can lead to misinformation. A.G. Heating & Cooling LLC is here to debunk some of the most common HVAC myths that might be affecting your decision-making process.

One of the most prevalent myths is that a bigger HVAC system will always perform better. While it might seem logical to associate size with performance, an oversized system can lead to inefficiencies. A system that's too large for your home can short-cycle, turning on and off too frequently, which can result in increased wear and tear. This misuse not only diminishes the efficiency of the system but also results in higher energy bills. Instead, it's essential to have an HVAC system that's appropriately sized for your home, ensuring optimal performance and comfort.

Another widespread misconception is that HVAC maintenance is not necessary unless there's a problem. Much like any other piece of machinery, regular maintenance is essential for ensuring the longevity and efficiency of your HVAC system. Routine checks and servicing help identify potential issues before they become significant problems, thus saving you both money and discomfort in the long run. A.G. Heating & Cooling LLC recommends scheduling professional maintenance at least twice a year to keep your system running smoothly.

Many homeowners also believe that closing vents in unused rooms can save energy. However, this can actually do more harm than good. HVAC systems are designed to distribute air evenly throughout your home, and closing vents can disrupt this balance. It could lead to increased pressure in your ductwork and potentially cause leaks, reducing the overall efficiency of your system. The best practice is to keep vents open and ensure that your system can operate as intended.

Setting the thermostat to extreme temperatures to heat or cool your home faster is another myth that doesn’t hold true. An HVAC system works at a consistent speed to reach the desired temperature. Setting the thermostat higher or lower than necessary won't make it work faster; it will simply run longer, consuming more energy and potentially leading to higher utility bills. Instead, it’s more efficient to set the thermostat to your desired temperature and allow the system to adjust accordingly.

Lastly, many assume that the air filter only needs to be changed once a year. However, air filters play a crucial role in maintaining the air quality and efficiency of your HVAC system. Depending on the type of filter and the environment of your home, filters may need to be replaced every 1-3 months. Regularly changing your air filter ensures your system doesn't have to work harder than necessary, improving both air quality and efficiency.

In conclusion, understanding the truth about these common HVAC myths can lead to better decision-making for maintaining your home's comfort. A.G. Heating & Cooling LLC is dedicated to providing accurate information and comprehensive services to help you make informed decisions about your HVAC system. Rely on professional guidance and routine maintenance to keep your HVAC system running at peak efficiency. Regular care and the right knowledge are your best allies in ensuring a comfortable and energy-efficient home.