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Debunking Top 8 Air Conditioning Myths

Air conditioning (AC) is one of those modern comforts we often take for granted, until something goes wrong. Whether you’re trying to beat the summer heat or keep your home just the right temperature year-round, a well-functioning AC is essential. But there’s a lot of misinformation out there about how to care for these systems, and falling for these myths can lead to inefficient cooling, higher energy bills, and costly repairs. Let’s clear the air and set the record straight.

We’ll debunk the top eight air conditioning myths, offering you practical advice to keep your home cool and your AC running smoothly. Plus, if you’re ever in a bind, remember that professional help is just a phone call away. Ready to get the facts and ensure your AC is in top shape?

Myth #1: Turning the AC Off When You’re Away Saves More Energy

It seems logical to turn off your AC when you’re not home to save energy, right? Unfortunately, this can backfire. Turning your AC off completely makes it work much harder to cool your home down when you return, using more energy in the process. Instead, raise the thermostat setting by a few degrees while you’re away. A programmable thermostat can be a game-changer here, keeping your home at a moderate temperature and reducing the workload on your AC. This way, you come back to a comfortably cool home without the spike in energy use.

Myth #2: Lowering the Thermostat Temperature Cools Your Home Faster

We’ve all been there, coming home on a scorching day and cranking the thermostat way down, hoping to cool off quickly. But here’s the deal: your AC cools at a constant rate. Setting the thermostat lower doesn’t speed up the cooling process; it just makes your system run longer, wasting energy. The best approach? Set your thermostat to your desired temperature and be patient. Better yet, invest in a smart thermostat that starts cooling before you get home, ensuring you walk into a perfectly cool space every time.

Myth #3: Closing Vents in Unused Rooms Saves Energy

It sounds reasonable—if you’re not using a room, why cool it? But closing vents in unused rooms can actually throw off your AC’s airflow balance, leading to pressure build-ups in the ducts. This can cause leaks, reduce efficiency, and even damage your system. Instead of closing vents, consider using zoning systems or simply adjusting the thermostat to manage the temperature more effectively. Keeping the airflow steady throughout your home helps maintain your AC’s efficiency and performance.

Myth #4: Regular Maintenance Is Unnecessary if the AC Is Running Fine

If it ain’t broke, don’t fix it, right? Not quite. Just because your AC seems to be running fine doesn’t mean you can skip regular maintenance. Neglecting routine checks can lead to hidden problems that escalate into major issues, causing unexpected breakdowns and costly repairs. Regular maintenance tasks—like cleaning or replacing air filters, checking refrigerant levels, and inspecting the system—are crucial for keeping your AC efficient and extending its lifespan. Annual maintenance checks with a professional HVAC technician can catch potential problems early, saving you money and headaches down the road.

Myth #5: Bigger AC Units Provide Better Cooling

“Bigger is better,” right? Not when it comes to air conditioning units. An oversized AC unit might cool your home faster, but it won’t do it efficiently. These units tend to short-cycle, turning on and off frequently, which can lead to higher energy bills and wear out the system faster. Plus, they don’t run long enough to dehumidify the air properly, leaving your home feeling clammy. The key to effective cooling is having a properly sized unit based on your home’s specific needs. A professional HVAC technician can help determine the right size for optimal performance and comfort.

Myth #6: Air Conditioners Only Need Refrigerant Once

Think of refrigerant as the lifeblood of your AC system—it should stay put unless there’s a problem. If your AC is low on refrigerant, it’s usually due to a leak, not normal usage. Simply adding more without addressing the leak is like putting a bandage on a serious wound. Signs of low refrigerant include reduced cooling power and hissing sounds from the unit. If you suspect a leak, call a professional to inspect and repair it, ensuring your AC runs efficiently and effectively.

Myth #7: Air Conditioners Don’t Need Cleaning Until They Stop Working

Out of sight, out of mind, right? Wrong. Your AC needs regular cleaning to maintain efficiency and air quality. Dirt and debris can accumulate on coils and filters, forcing your system to work harder and potentially leading to breakdowns. Regularly clean or replace air filters and schedule professional cleanings to keep your AC running smoothly. This simple maintenance can improve your system’s efficiency, extend its lifespan, and ensure the air you breathe is clean and healthy.

Myth #8: DIY Repairs Are Always Cheaper and Effective

Who doesn’t love a good DIY project? But when it comes to AC repairs, it’s best to leave it to the pros. While it might seem like you’re saving money, DIY repairs can often lead to bigger problems if not done correctly. You could inadvertently cause more damage, leading to more costly repairs down the line. Professional HVAC technicians have the training and tools to diagnose and fix issues properly. Investing in professional repairs ensures your system runs safely and efficiently, ultimately saving you money and hassle.

Final thoughts

By debunking these common myths, you’re better equipped to take care of your air conditioning system, ensuring it runs efficiently and reliably. Remember, proper maintenance and professional guidance are key to keeping your home cool and comfortable without unnecessary costs. Stay cool, stay informed, and give your AC the attention it deserves.


Looking for a reliable HVAC company? We’ve got you covered! The team at JWS Mechanical & Construction offers expert maintenance and expert insight to all your HVAC needs across Parry Sound, Huntsville, or North Bay. Call (705) 845-6956 or request service online now!

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