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Will a Bigger AC Unit Perform Better?


Article by Jason Fraser

Photography by Laurie Fraser

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As the saying goes, everything is bigger in Texas. So when residents of Argyle and surrounding communities aren’t satisfied with the way their home’s seemingly smaller air conditioning unit performs during the summer, they instantly think switching to a bigger AC unit is the answer. After all, a bigger unit equals more capacity to blow cool air, which equals improved comfort. Right?


Well, not exactly. Bigger isn’t always better in the AC world, and any HVAC contractor worth their salt will agree with us. What is more important than size is that your existing unit is appropriately sized for your home and matches the components in your attic. Maybe your existing unit is too small, thus requiring a bigger AC system inside and out moving forward. But getting an oversized outside unit just to say you have one likely won’t improve your cooling needs like you thought it would.


In fact, you may end up costing yourself a lot of money and creating additional headaches you didn’t anticipate.


The Negatives of Having a Bigger AC Unit


1.   Higher energy consumption — A bigger AC unit naturally requires more power to run than a smaller one. But many people don’t realize that having one also means shorter run cycles to cool the home faster. That means less energy efficiency and higher energy bills because of the constant need to turn itself on and off rather than maintain longer run cycles. No one wants that! 

2.   Shorter lifespans — To piggyback off the previous item, short run cycles create air distribution issues and faster wear and tear. This leads to components and other parts wearing out early and needing to be replaced.

3.   Uneven temperatures from room to room — You’ve likely already experienced one or several rooms being cooler than others. With a bigger AC unit, those disparities will be even more pronounced.

4.   Mismatched equipment — Your system’s efficiency capabilities and overall lifespan will suffer immensely if the condenser and evaporator coils don’t match. Essentially, one will need to work harder to match the performance of the other, thus leading to you never quite getting what you want from your system.

5.   Poor indoor air quality — The threat of excess humidity is high with an oversized or bigger AC unit. On top of that, the odds of worsening ductwork leaks are a significant concern.


Click here to see what’s included in A&A Air’s Spring/Summer and Fall/Winter preventative maintenance checklists.


Call A&A Air Today!


Preventative maintenance from a trusted HVAC repair technician can avoid many AC outages so that you get the most out of your existing unit. At A&A Air, we take your family’s comfort seriously. If you need a new unit, you can rely on us to ensure the next unit is compatible with your home’s needs and doesn’t break the bank.


We know our job inside and out and respond promptly. All you need to do is give us a call today!


We proudly serve Argyle, TX, and surrounding areas. You can email us at or call 972-951-1320.

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