Over the past 20+ years, RMS Cooling has heard many myths about HVAC systems that unsuspecting homeowners were told. Though our list is long, here are the top eight we hear regularly and want you to know so you are not misled.
Myth #1: Bigger Systems Cool Faster
Oversized systems cool quickly, which might sound good until you realize they shut off before properly dehumidifying the air. Proper sizing is essential for long-term system health.
Myth #2: You Only Need to Change the Filter Once a Year
A clogged filter reduces airflow, strains the system, and can even lead to breakdowns. So, depending on usage, pets, and indoor air quality, your filters need changing every 1–3 months.
Myth #3: Turning the Thermostat Down Cools the House Faster
Setting the thermostat to 60°F will not cool your home faster; it will make the system run longer. Instead, set your thermostat to the desired temperature, and the system will cool the house.
Myth #4: Closing Vents in Unused Rooms Saves Money
Closing vents disrupts your system’s airflow balance and will cause pressure buildup, duct leakage, or even frozen coils. Modern systems are designed to condition the entire home.
Myth #5: Yearly Maintenance Is Not Necessary
Skipping annual maintenance is like never changing your car’s oil. Yearly inspections uncover minor issues before they become expensive problems, especially during summer.
Myth #6: Ceiling Fans Lower Room Temperatures
Fans never lower the temperature; they circulate air to create a wind-chill effect that feels cooler. Use fans inside your room, but turn them off when leaving to save electricity.
Myth #7: Duct Tape Is Perfect for Sealing Ductwork
Duct tape is not suitable for sealing HVAC ductwork. It dries out, loses adhesion, and deteriorates over time. Use mastic sealant or foil-backed tape designed for HVAC systems.
Myth #8: All HVAC Systems Are the Same
Efficiency, performance, durability, and indoor air quality vary drastically between brands and models. What works for one home may be a poor fit for another.
Avoid These Myths To Protect Your HVAC System
At Rankin Mechanical Services, we help homeowners across Winter Haven, Polk County, and Plant City keep their HVAC systems clean, efficient, and reliable. Whether you’re overdue for a filter change or need expert guidance, give us a call or stop by. RMS Cooling is here when your comfort matters most.