Common HVAC Myths Debunked

Jan 10, 2024

As the temperature starts to rise, many homeowners turn to their HVAC systems to keep their homes cool and comfortable. However, there are several common myths surrounding HVAC systems that can lead to confusion and misinformation. In this blog post, we will debunk some of these myths and provide you with accurate information to help you make informed decisions about your HVAC system.

Myth 1: Closing Vents in Unused Rooms Saves Energy

It is a common misconception that closing vents in unused rooms can save energy. However, this can actually lead to an imbalance in your HVAC system and cause it to work harder. Closing vents can increase the pressure in the ductwork, leading to leaks and inefficiency. It is best to keep all vents open and ensure proper airflow throughout your home.

hvac system

Myth 2: Lowering the Thermostat Temperature Cools Your Home Faster

Many people believe that setting their thermostat to a lower temperature will cool their home faster. However, HVAC systems work at a consistent pace, regardless of the temperature setting. Setting the thermostat to a lower temperature will not cool your home any faster, but it will make your system work longer and consume more energy. It is best to set your thermostat to a comfortable temperature and allow the system to do its job.

Myth 3: Regular Maintenance is Unnecessary

Some homeowners may think that regular maintenance for their HVAC system is unnecessary and a waste of money. However, regular maintenance is crucial for the performance and longevity of your HVAC system. Routine inspections and tune-ups can catch small issues before they become major problems, saving you money on costly repairs down the line. It is recommended to schedule annual maintenance with a qualified HVAC technician.

hvac maintenance

Myth 4: Closing Doors and Vents in Unused Rooms Saves Energy

Similar to myth 1, closing doors and vents in unused rooms does not save energy. In fact, it can disrupt the balance of your HVAC system and lead to inefficiency. Closing doors and vents can create pressure imbalances, causing your system to work harder and potentially leading to costly repairs. It is best to keep doors open and ensure proper airflow throughout your home.

Myth 5: A Larger HVAC System is Always Better

When it comes to HVAC systems, bigger is not always better. Installing an oversized HVAC system can lead to short cycling, where the system turns on and off frequently, wasting energy and causing unnecessary wear and tear. It is important to choose the right-sized system for your home, based on factors such as square footage, insulation, and climate.

hvac system size

Myth 6: Ceiling Fans Cool Rooms

While ceiling fans create a cooling effect, they do not actually cool rooms. Ceiling fans circulate air, creating a breeze that can make you feel cooler. However, they do not lower the temperature in the room. It is important to remember to turn off ceiling fans when you leave a room to save energy.

Myth 7: HVAC Filters Only Need to be Changed Once a Year

Many people believe that HVAC filters only need to be changed once a year. However, this is not the case. HVAC filters should be checked and replaced regularly, typically every one to three months, depending on factors such as the type of filter and the level of dust and contaminants in your home. Regularly changing your filters improves indoor air quality and helps your HVAC system run efficiently.

hvac filter

Myth 8: Closing Unused Vents Reduces Energy Consumption

Contrary to popular belief, closing unused vents does not necessarily reduce energy consumption. In fact, closing vents can disrupt the balance of your HVAC system and lead to increased energy usage. The system is designed to distribute air evenly throughout your home, and closing vents can cause pressure imbalances and potential damage to the system. It is best to keep all vents open and ensure proper airflow.

Myth 9: Turning Off the HVAC System When You Leave Saves Energy

While it may seem logical to turn off your HVAC system when you leave your home to save energy, it can actually be more efficient to adjust the temperature instead. Turning off the system completely can cause the temperature to rise or drop significantly, requiring more energy to bring it back to a comfortable level when you return. Instead, consider adjusting the temperature by a few degrees to save energy while maintaining a comfortable environment.

hvac thermostat

Myth 10: Duct Tape is an Effective Solution for Leaky Ducts

Despite its name, duct tape is not an effective solution for leaky ducts. Over time, duct tape can deteriorate and lose its adhesive properties, allowing air to escape. It is best to use specialized duct sealing products or consult with a professional HVAC technician to properly seal any leaks in your ductwork.

By debunking these common HVAC myths, we hope to provide you with accurate information to help you optimize the performance and efficiency of your HVAC system. Remember, regular maintenance, proper airflow, and informed decision-making are key to keeping your home comfortable and energy-efficient.