When it comes to heating and cooling your home, there’s a lot of advice floating around – some helpful, some…. not so much. Many homeowners make decisions based on outdated information or persistent HVAC myths that just won’t go away. Believing the wrong things can lead to higher energy bills, unnecessary repairs, or a system that doesn’t perform like it should.

Let’s clear the air! Here are some of the most common HVAC myths and the truth behind them.

Myth #1: Bigger is Always Better

Truth: An oversized HVAC system isn’t just a waste of money – it can actually make your home less comfortable. A system that’s too large will heat or cool your space quickly, but shut off before it can properly remove humidity or evenly distribute air. This can lead to hot/cold spots, poor air quality, and more wear and tear on the unit.

The Fix: Proper sizing matters. A professional load calculation ensures your system fits your home just right.

Myth #2: You Only Need to Change Your Filter Once a Year

Truth: Your filter should typically be changed every one to three months, depending on usage, pets, allergies, or dust levels. A dirty filter restricts airflow, forces your system to work harder, and reduces air quality.

The Fix: Set a reminder or check your filter monthly, it’s a small step that makes a big difference.

Myth #3: Closing Vents in Unused Rooms Saves Energy

Truth: It seems logical, but it doesn’t work that way. HVAC systems are designed to balance airflow throughout your entire home. Closing vents can increase pressure in the ductwork, leading to leaks, reduced efficiency, and even damage to the system.

To Fix: Keep vents open and consider zoning systems if you want more control over individual room temperatures.

Myth #4: Cranking the Thermostat Up/Down Will Heat/Cool Your Home Faster

Truth: HVAC systems deliver air at a consistent rate, regardless of the thermostat setting. Turning the temperature way up or down won’t speed things up – it just makes your system run longer than necessary.

To Fix: Set your thermostat to your desired temperature and let it do its job. Better yet, install a programmable or smart thermostat for added control.

Myth #5: Maintenance is Optional Unless Something Breaks

Truth: Regular HVAC maintenance isn’t just about preventing breakdowns, it keeps your system running efficiently, extends its lifespan, and can even improve indoor air quality. Waiting until something breaks often leads to bigger (and more expensive) problems.

To Fix: Schedule seasonal checkups to catch small issues before they become major headaches.

Myth #6: All HVAC Systems are the Same

Truth: From energy efficiency ratings to features like variable speed motors and smart integrations, not all systems are created equal. The brand, model, and setup can make a big difference in comfort, cost, and performance.

The Fix: Work with a trusted HVAC professional to choose the best system for your home’s size, layout, and needs.

Knowledge = Comfort + Savings

HVAC technology has come a long way, but the myths have stuck around. By knowing the facts, you can make smarter choices that improve comfort, lower your energy bills, and help your system last longer.

At 4 Winds AC and Heating, we’re here to help you separate myth from fact and make sure your HVAC system is working its best. Whether you have questions or need a second opinion, we’re just a phone call away.

Have HVAC Questions? We’ve Got Answers.

Contact 4 Winds AC and Heating today to schedule a system evaluation or ask us anything – no myths, just honest help.