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There’s no shortage of advice floating around about how to make your heating and cooling system run better. The problem is, not all of it is true—and some of it can actually lead to higher energy bills and unnecessary repairs. At Bayonet Plumbing, Heating & Air Conditioning, we’ve spent decades helping Florida homeowners cut costs and stay comfortable. Along the way, we’ve seen how misinformation about HVAC systems can lead to wasted energy and frustration. Let’s look at three common myths that can quietly cost you money every month.
Myth #1: A Bigger HVAC System Means Better Cooling
Many homeowners assume that buying the largest air conditioner available will make their home cool faster and stay more comfortable. In reality, an oversized unit can cause more problems than it solves. When a system is too large for the space, it reaches the thermostat setting too quickly, shutting off before it can properly remove humidity from the air.
This short cycling leads to uneven temperatures, clammy air, and increased energy use. Because the system turns on and off frequently, it also experiences more wear and tear, reducing its lifespan and driving up repair costs. The right-sized unit keeps you comfortable, runs efficiently, and saves money year after year.
Myth #2: The Air Filter Affects Air Quality
It’s true that your HVAC filter helps trap dust, pollen, and other airborne particles, but that’s only part of its job. The air filter also plays a critical role in keeping your system efficient. When a filter becomes clogged, airflow slows down, forcing the blower motor to work harder. This extra strain means higher electricity usage—and in many cases, a burned-out fan motor.
A dirty filter can even cause the evaporator coil to freeze, leading to expensive repairs. To avoid these issues, homeowners should check their filter monthly and replace it every one to three months, depending on use and indoor air quality. This is something we can do during heating maintenance in Myakka City.
Myth #3: Your HVAC System Doesn’t Run in “Fan Only” Mode
Some homeowners think the “fan” setting on their thermostat is only for ventilation and doesn’t affect energy use. The truth is, running your fan continuously can waste power and increase humidity, especially in Florida’s climate.
When the fan runs all the time, it blows warm, moist air over the evaporator coil after the compressor turns off, pushing that humidity right back into your home. A better approach is to use the “auto” setting. This ensures the fan operates only when cooling or heating is needed, maintaining balanced humidity and preventing unnecessary energy consumption.
Smart HVAC Habits Pay Off
False assumptions about your HVAC system can quietly drive up energy costs and lead to early equipment failure. Understanding how your system truly works—and letting a qualified professional handle maintenance—can save you hundreds of dollars each year.
At Bayonet Plumbing, Heating & Air Conditioning, we believe in helping homeowners make informed choices about comfort and efficiency. Whether you need system sizing guidance, a professional tune-up, or advice on air quality upgrades, our experienced technicians are here to help.
It’s No Sweat: Call Bayonet! Contact Bayonet Plumbing, Heating & Air Conditioning to schedule heating maintenance in Myakka City, FL today!