Common Myths About HVAC Systems

Sad woman sweating suffering a heat stroke.

Numerous misconceptions about HVAC systems can lead to inefficient use, increased costs, and general frustration. Understanding these myths and their truths can help homeowners make better decisions about their heating, ventilation, and air conditioning systems.

Here are some of the most common myths about HVAC systems debunked.

Myth 1: Bigger HVAC Systems Are Always Better

An oversized system can cause more problems than it solves. Large systems can cycle on and off too frequently, leading to inefficient energy use, increased wear and tear, and poor humidity control. It's essential to have an HVAC system that is properly sized for your home.

An HVAC professional can calculate load to determine the right size unit for your space.

Myth 2: Closing Vents in Unused Rooms Saves Energy

Many homeowners believe that closing vents in unused rooms will save energy by directing airflow to other house areas. However, this practice can disrupt the balance of your HVAC system, leading to increased pressure in the ducts and potential leaks.

Additionally, it can cause the system to work harder and less efficiently. Instead of closing vents, consider using a zoned HVAC system that allows you to control the temperature in different areas of your home more effectively.

Myth 3: You Only Need to Change the Filter Once a Year

Changing the air filter in your HVAC system is a crucial maintenance task that should not be overlooked. Some people believe that filters only need to be changed once a year, but filters should be checked and replaced every one to three months, depending on usage and the presence of pets or allergies.

Regular filter change helps maintain good air quality, improves system efficiency, and extends the life of your HVAC unit.

Myth 4: Thermostat Location Doesn’t Matter

The placement of your thermostat can significantly impact your HVAC system’s performance. If the thermostat is located in a spot that is exposed to direct sunlight, drafts, or other heat sources, it can give false readings and cause your system to run unnecessarily.

The best place for a thermostat is on an interior wall, away from direct sunlight, drafts, and heat-producing appliances. This ensures accurate temperature readings and efficient system operation.

Myth 5: HVAC Maintenance Is a Waste of Money

Some homeowners view HVAC maintenance as an unnecessary expense, thinking that their system doesn’t need attention unless it’s broken. However, regular maintenance can prevent many common issues, improve efficiency, and extend the lifespan of your system.

During a maintenance visit, a technician can identify and fix minor problems before they become major, costly repairs. Investing in routine maintenance can save you money in the long run and ensure your system operates smoothly.

Myth 6: The Lower the Thermostat, the Faster the Cooling

A common misconception is that setting the thermostat to a lower temperature will cool your home faster. HVAC systems work consistently to reach the set temperature, so setting the thermostat lower than desired will not speed up the cooling process.

Instead, it will only cause the system to run longer, using more energy and potentially leading to a colder-than-necessary environment. Set the thermostat to your desired temperature for optimal comfort and efficiency.

Myth 7: HVAC Systems Don’t Affect Indoor Air Quality

HVAC systems play a significant role in maintaining indoor air quality. A well-maintained system filters out dust, pollen, and other airborne particles, helping keep your home's air clean. Ignoring your HVAC system can lead to poor indoor air quality, exacerbating allergies and respiratory issues.

Regular maintenance, including filter changes and duct cleaning, is essential for maintaining good air quality.

Consult Our HVAC Experts to Optimize Your System Today!

Understanding the facts behind common HVAC myths can help you make informed decisions about your system. If you have any concerns about your HVAC system, consult a professional for accurate information and expert advice.

Reach out to American AC & Heating today at (956) 300-4366 to learn more.