Common HVAC Myths Debunked: What Every Homeowner Should Know Dec 23, 2025

As temperatures change with the seasons, homeowners often reconsider their heating, ventilation, and air conditioning (HVAC) systems. For many, this involves sifting through a maze of myths and misunderstandings that can cloud an otherwise simple maintenance task. At Brantley's Heating and Cooling, we believe in empowering homeowners with accurate information to ensure their HVAC systems operate efficiently. Let's debunk some common HVAC myths and clear the air for you.

A prevalent misconception is that the bigger an HVAC system, the better it is for your home. This misunderstanding can lead to poor performance and energy inefficiency. An oversized unit can short cycle, rapidly turning on and off, leading to excessive wear and higher energy bills. The key to optimal HVAC performance lies in choosing a system size tailored to your home's specific needs. Consulting with a professional HVAC technician from Brantley's ensures you select the right fit and keep your home comfortable throughout the year.

Many homeowners believe they should only schedule HVAC maintenance when they notice a problem. However, preventative care is crucial. Regular maintenance can catch small issues before they become costly repairs. Professionals recommend twice-yearly check-ups—in the spring for cooling systems and in the fall for heating systems. This routine keeps your HVAC system running efficiently, prolongs its lifespan, and helps you avoid unexpected visits from the repair technician.

Another myth suggests closing vents in unused rooms will cut costs. While this idea seems plausible, it can actually disrupt your HVAC system's balance. Closing vents increases pressure within the ductwork, causing the system to work harder. This additional strain can lead to duct leaks and increased energy consumption. A more effective way to save on energy is to optimize your HVAC system for your home's square footage and insulation levels, or invest in a programmable thermostat to tailor your home's climate to your daily schedule.

A common misconception involves the thermostat's location. Some believe the thermostat's placement has no impact on HVAC performance. In reality, placing it in direct sunlight, near drafts, or away from the central living spaces can skew temperature readings, leading to inefficient heating or cooling cycles. The ideal position for a thermostat is on an interior wall, away from windows, doors, and direct sunlight.

Finally, many homeowners assume HVAC filters only need changing once a year. Not only is this frequency insufficient, but it can also lead to inadequate air quality and system strain. HVAC filters should be checked monthly and replaced based on manufacturer recommendations, typically every one to three months, depending on the filter type and home conditions.

By debunking these myths, we aim to provide homeowners with the necessary tools to maintain efficient, cost-effective, and reliable HVAC systems. Brantley's Heating and Cooling is dedicated to ensuring you are well-informed and prepared to tackle any HVAC concerns. Regular service, choosing the right system size, and understanding proper system management contribute significantly to your home's comfort and energy efficiency.

We encourage you to contact us for all your HVAC needs, whether installing, maintaining, or seeking advice tailored to your home. Together, we can navigate through the myths and ensure your system remains efficient and reliable throughout the seasons.