AC Sizing: Why It Matters

heating and air conditioning units
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When it comes to staying cool in Texas, your air conditioner is your best friend. But did you know that the size of your AC system can make or break your comfort? At Advanced Texas Air Conditioning, we’ve seen firsthand how important proper AC sizing is for homeowners across Rowlett, Wylie, and North Dallas.

Let’s break down why AC sizing matters—and how our licensed technicians ensure your system is just right.

What Is AC Sizing?

AC sizing refers to the cooling capacity of your air conditioning system, typically measured in tons or BTUs (British Thermal Units). One ton of cooling equals about 12,000 BTUs per hour. Your home's size, insulation, window exposure, ceiling height, and even the number of people in your household all affect how much cooling power your system needs.

Many people assume “bigger is better” regarding AC—but that’s not always true.

Why the Right Size Matters

1. Too Small? You’ll Struggle to Stay Cool

An undersized AC unit will run constantly trying to keep up with the demand, especially during the scorching Texas summer. That means:

  • Higher energy bills

  • Uneven cooling

  • More wear and tear on your system

  • Shorter equipment lifespan

If your system is always playing catch-up, you're not only sacrificing comfort—you're wasting money.

2. Too Big? Not as Cool as You’d Think

An oversized unit may cool your home too quickly, which might sound good at first—but it creates its own set of problems:

  • The system short cycles, starting and stopping frequently

  • It doesn’t run long enough to remove humidity

  • You get a cold, clammy feeling instead of true comfort

  • More frequent repairs and reduced system efficiency

Basically, bigger isn’t better—it’s just more problematic.

How We Get It Right

At Advanced Texas Air Conditioning, we don’t believe in guesswork. When we install or replace an AC system, we start with a professional load calculation tailored to your specific home. We consider:

  • Square footage

  • Layout and insulation

  • Window size and orientation

  • Ductwork efficiency

  • And more

Our experienced team—backed by over 20 years in the HVAC industry—knows how to design a system that delivers comfort and efficiency. We’ve been proudly serving families in Rowlett since 2018, and we treat every home like it’s our own.

Better Sizing = Long-Term Savings

A properly sized AC system doesn’t just keep you cool—it saves you money. It runs more efficiently, lasts longer, and performs better, season after season.

Need Help With Your AC?

If you're unsure whether your current AC is the right size or if you’re planning a replacement, we're here to help. At Advanced Texas Air Conditioning, we make it easy to choose the right system for your home, your needs, and your budget.

Get in touch today for a personalized consultation, and let us keep your comfort on track—no matter how hot it gets in Texas! Call us  at (214) 238-9373 to learn more!

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