HVAC Myths Debunked: Separating Fact from Fiction
The world of HVAC systems can be confusing, and with so much information available, it’s
easy to fall for some common myths. In this blog, we’ll set the record straight by debunking
some of the most pervasive HVAC misconceptions. Let’s separate fact from fiction so you
can make informed decisions about your home’s comfort and efficiency
Myth #1: Bigger HVAC Systems Are Always Better
A larger system doesn’t always mean better performance. An oversized HVAC system can
lead to uneven temperatures, excessive energy usage, and more frequent wear and tear due
to short cycling. Properly sizing your system is crucial for efficiency and comfort.
Myth #2: Closing Vents in Unused Rooms Saves Energy
Closing vents might seem like a logical way to reduce energy usage, but it can disrupt
airflow and increase pressure in the ducts. This strain can make your system work harder,
reducing its efficiency and potentially causing damage over time.
Myth #3: You Only Need to Change Your Air Filter Once a Year
Regular air filter changes are essential for system efficiency and air quality. For most
households, filters should be replaced every 1–3 months, especially if you have pets or
allergies.
Myth #4: Maintenance Is Unnecessary for a New HVAC System
Even new systems need routine maintenance to perform at their best. Regular tune-ups can
help prevent unexpected breakdowns, extend the life of your system, and keep your
warranty valid.
Myth #5: The Thermostat’s Location Doesn’t Matter
Thermostat placement plays a significant role in how your HVAC system performs. If it’s
located near a heat source, drafty area, or in direct sunlight, it could lead to inaccurate
temperature readings and uneven heating or cooling.
Myth #6: You Can Use the Same HVAC System Forever
While HVAC systems are durable, they have a lifespan—usually 10–15 years for air
conditioners and up to 20 years for furnaces. Continuing to use an outdated system can
result in higher energy bills, frequent repairs, and less comfort.
Myth #7: Ceiling Fans Cool the Room
Ceiling fans don’t cool the air; they simply create airflow that makes you feel cooler by
evaporating sweat. Don’t forget to turn them off when you leave the room to save energy.
Myth #8: Turning Your HVAC System On and Off Saves Energy
Frequently turning your system on and off can use more energy than maintaining a
consistent temperature. A programmable or smart thermostat is a better option for
optimizing comfort and efficiency.
Myth #9: Duct Cleaning Is Always Necessary
While duct cleaning can improve air quality in some cases (e.g., mold, pest infestations, or
significant dust buildup), it’s not always necessary. Routine maintenance and regular filter
changes often suffice to keep your air clean.
Myth #10: Cranking the Thermostat Will Heat or Cool Your Home Faster
HVAC systems work at a consistent pace regardless of how high or low the thermostat is set.
Setting it to an extreme temperature only wastes energy and won’t speed up the process.
By understanding the truth behind these myths, you can make better decisions about your
HVAC system and ensure it operates efficiently and effectively. Need help with maintenance,
upgrades, or installations? Contact us at American Heating & Air Plus—we’re here to keep
you comfortable year-round!