Common Myths About HVAC Systems

At Townsend Energy, we’ve been helping families across Marblehead, Swampscott, Salem, and Nahant stay comfortable year-round since 1954. Over the decades, we've encountered a lot of confusion and misinformation about HVAC systems. These myths can lead to costly decisions, higher energy bills, and unnecessary wear on your system. Let’s break down some of the most common HVAC myths and set the record straight.

Myth #1: You Only Need to Replace the Filter Once a Year

Many homeowners believe that HVAC filters only need to be changed annually. In truth, most filters should be replaced every 1 to 3 months—especially during peak heating or cooling seasons. A clean filter improves airflow, supports system efficiency, and helps keep your indoor air free from dust and allergens.

Myth #2: Shutting Vents in Empty Rooms Saves Energy

It’s easy to assume that closing vents in unused rooms would lower energy use, but this can actually disrupt the balance of your system. Your HVAC unit is designed to operate with all vents open. Closing off airflow increases pressure in the ductwork, which can lead to leaks or reduce the system’s overall performance.

Myth #3: A Bigger HVAC Unit Will Work Better

It might sound like a more powerful system would keep your home more comfortable, but oversized HVAC units often cycle on and off too quickly. This short cycling can cause uneven temperatures, increase humidity, and put unnecessary stress on components—leading to more frequent repairs. The best system is one properly sized to your home's needs.

Myth #4: HVAC Maintenance Is Only Necessary When Something Breaks

Waiting until something goes wrong can cost you more in the long run. Routine maintenance keeps your system running efficiently and helps catch small issues before they turn into expensive problems. Our team offers comprehensive maintenance services to keep your heating and cooling systems in top shape—season after season.

Myth #5: Thermostat Placement Doesn’t Impact Performance

Where your thermostat is located makes a big difference. Placing it in direct sunlight, near appliances, or too close to vents can cause inaccurate temperature readings. These misreadings may lead to your HVAC system working harder than necessary, which increases energy use and reduces comfort.

Trust Local Experts Who Know the Area

With decades of experience serving Massachusetts homes, Townsend Energy understands how to get the most out of your HVAC system. From freezing winters to humid summers, we tailor our solutions to help you stay comfortable without overspending on energy bills.

Ready to Learn More or Schedule a Service?

If you're unsure whether your HVAC system is performing as it should—or if you've been relying on outdated advice—give our team a call. We're here to help you make informed decisions about your home's comfort and efficiency.

Reach out to Townsend Energy today at (781) 365-5828!