The Top Five Misconceptions about HVAC Systems: Debunked!

Are you considering purchasing a new HVAC system for your home? If so, you may have heard some myths about these systems that have been debunked! Unfortunately, many people have misconceptions about these systems, leading to confusion and frustration when selecting the right one for their home.

Some of these myths are so convincing that we believe that they save us money in the long run. We are going to discuss the top five misconceptions about HVAC systems and provide accurate information to set the record straight.

The Invention Of Modern Air Conditioning

In the spirit of providing accurate information, it is essential to note that the modern air conditioner was invented by Willis Carrier in 1902. When Carrier developed the first unit, its purpose had nothing to do with increasing human comfort. Nor was this system used for homes or buildings; he used it to help Brooklyn’s Sackett-Wilhelms Lithographic and Publishing Company printer continue to do its job.

At the time, the company had suffered two years of ruined pages that swelled and blurred from the sheer humidity of summer. So, the experimental engineer decided to use an industrial fan to blow air over steam coils filled with cold water. Then the moisture would condense on the coils, thus producing cold air. But, realizing his invention was not as efficient as possible, he continued to research and design his product.

By 1922, William had created an all-around better and safer Centrifugal Refrigeration Compressor. Not long after that, he founded Carrier Engineering Corporation in 1915; his company continues to offer high-quality energy-efficient products. Carrier’s legacy continues to impact the HVAC industry today.

Now that we have a little bit of history under our belts let’s debunk those myths.

The HVAC Industry’s Myths


Most people believe this, “bigger is always better” for HVAC systems. But unfortunately, while a more extensive system may be able to cool or heat your home faster, it is not always the most energy-efficient option. Moreover, a system that is too large for your home will cycle on and off more frequently, leading to higher energy bills and premature wear and tear on the system.

The best way to determine the size of the HVAC system you need is to have a load calculation performed by a professional. This process considers the square footage of your home, insulation levels, number of windows, age of your home, how many people live in your home, and other factors that impact how much heating and cooling your home needs.


Another common misconception about HVAC systems is that you can set it and forget it. While these systems are designed to run efficiently, they still need regular maintenance to ensure they are running at peak performance.

Like your car, your HVAC system needs regular tune-ups to keep it running smoothly. During a tune-up, a professional will clean the system, check for any repair needs, and ensure the system is running well as efficiently as possible.

Regular tune-ups will prolong the life of your HVAC system, but they can also help you avoid costly repairs down the road. For instance, many manufacturers require proof of regular maintenance to keep your warranty valid.


Another common misconception about HVAC systems is that closing vents in unused rooms will save energy. It may seem logical but this can have the opposite effect.

Closing vents in unused rooms can throw off the balance of your HVAC system, causing it to work harder to distribute the air. At last, this can lead to higher energy bills and premature wear and tear on your system.


Another common misconception about HVAC systems is that the location of your thermostat doesn’t matter. While it sounds like a small matter, the location of your thermostat can actually have a serious impact on the efficiency of your system.

Your thermostat should be in an area that is free from drafts and direct sunlight. If your thermostat is located in a drafty area or under direct sunlight, it can cause the system to cycle on and off more frequently, leading to higher energy bills. Keep the thermostat out of the kitchen, as the heat from cooking can cause the system to cycle unnecessarily. The hallway is the best place for a thermostat as it remains relatively unoccupied.


The last common misconception about HVAC systems is that all HVAC companies are the same. While many reputable companies are out there, not all of them are created equal. When looking for an HVAC company, be sure to do your research.

Check out online reviews, ask for recommendations from friends and family, and get several estimates before making your final decision. Not all HVAC companies will offer the same level of service or quality, so it’s crucial to find one that you can trust.

Be Familiar With Your HVAC System

When it comes to your HVAC system, knowledge is power. You can ensure your HVAC system runs efficiently and effectively by debunking these common misconceptions. If you have any questions about your HVAC system, contact a professional. Regular maintenance and proper operation of your system will help ensure your home is comfortable all year long.

Sal Cangelosi is the owner and operator of Air Unlimited Heating & Cooling in Overland Park, a local family-owned heating and cooling company that serves the residents of Liberty and the Kansas City Metro area. Sal has over ten years of experience in the HVAC industry and is passionate about providing the best customer service experience possible.

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