Top 5 Air Conditioning Myths Debunked

When it comes to air conditioning, there's no shortage of myths and misconceptions. These misunderstandings can lead to inefficient usage, increased energy bills, and even premature system failures. At Courtesy Plumbing & Heating, we believe in empowering our customers with accurate information. Here, we debunk the top five air conditioning myths to help you make the most of your cooling system.

Myth 1: Bigger is Always Better

Many people believe that a larger air conditioner will cool their home more effectively. However, this isn't the case. An oversized AC unit will cool the air too quickly without removing sufficient humidity, leading to a cold but clammy environment. Additionally, frequent cycling on and off strains the system, reducing its lifespan.

Fact: It's essential to have a properly sized air conditioner tailored to your home's specific needs. A professional HVAC technician can perform a load calculation to determine the ideal size for your space.

Myth 2: Setting the Thermostat Lower Will Cool Your Home Faster

It might seem logical that setting your thermostat to a lower temperature will cool your home more quickly, but air conditioners work at a consistent rate. Lowering the thermostat setting will not speed up the cooling process; it will only make the unit run longer, wasting energy.

Fact: Set your thermostat to your desired temperature, and be patient. For quicker cooling, consider using a programmable thermostat to start cooling your home before you arrive.

Myth 3: Air Conditioners Only Cool the Air

While it's true that air conditioners cool the air, their function goes beyond that. Air conditioners also remove humidity from the air, which is crucial for comfort and health. High humidity can make your home feel warmer than it is and promote mold growth.

Fact: Air conditioners play a dual role in cooling and dehumidifying your home, making it more comfortable and healthier to live in.

Myth 4: You Only Need to Change the Filter Once a Year

Changing the air filter once a year is a common misconception. In reality, the frequency with which you should change your filter depends on several factors, including the type of filter, the number of occupants, and whether you have pets or suffer from allergies.

Fact: For optimal performance and air quality, it's recommended to check and change your air filter every 1-3 months. A clean filter ensures efficient airflow and reduces strain on your system.

Myth 5: Maintenance Isn’t Necessary if the AC is Working Fine

Many homeowners neglect routine maintenance, thinking it's unnecessary if their air conditioner appears to be working fine. However, regular maintenance is crucial to ensure your system runs efficiently and to prevent minor issues from becoming major problems.

Fact: Scheduling annual maintenance check-ups with a professional HVAC technician can extend the life of your air conditioner, improve its efficiency, and save you money on repairs and energy bills.


Understanding the truths behind these common air conditioning myths can help you use your system more efficiently, reduce energy consumption, and prolong its lifespan. At Courtesy Plumbing & Heating, we're here to provide expert advice and services to keep your home comfortable all year round. If you have any questions or need assistance with your air conditioning system, don't hesitate to contact us. Stay cool and informed!

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