Choosing the right size AC unit is crucial for ensuring your home stays cool and comfortable all summer long. An undersized system won’t have the power to fight Florida’s heat, leaving you hot and frustrated. On the other hand, an oversized unit will be a drain on energy and money and could create humidity problems.

Getting the Size Right

To find what size AC unit you need, start by calculating your room’s square footage. Measure the length and width of the space to be cooled and multiply these numbers together. For rooms with complex shapes, divide them into simpler shapes, calculate each area, and then add them up. This figure is your starting point for understanding the size of the air conditioner you need.

The basic formula suggests using around 20 BTUs (British Thermal Units) per square foot of living space. However, this is just a starting point. You’ll need to adjust this number based on various factors, such as:

  • Room height
  • The number of occupants
  • Whether the room is a kitchen (since kitchens generate more heat)

Factors Influencing AC Size

Several variables can influence the size of the AC you need. Let’s look at four key factors:

  1. Ceiling Height: Rooms with ceilings higher than the standard 9 feet contain more air, requiring a larger AC system to cool efficiently.
  2. Home Exterior: The material and color of your home’s exterior affect heat absorption. Light colors and certain materials like brick or vinyl siding can significantly impact your cooling needs.
  3. Insulation: Good insulation keeps warm air out and cool air in, making your AC unit run more efficiently. This could mean you need a smaller AC size than a poorly insulated home.
  4. Shade and Sun Exposure: The amount of direct sunlight your home receives can drastically affect its internal temperature. More sun exposure usually means you’ll need a larger AC unit to maintain comfort.

Making Your Comfort a Priority

Selecting the right AC size is a balance between the science of cooling and the art of comfort. It’s about creating an environment where you feel at ease without overburdening your energy bill or your AC unit.

If you’re pondering the size of the central AC unit youneed, remember it’s not just about the square footage—it’s about making your space comfortable for you and your loved ones.

For expert guidance on AC installation in Burnt Store, don’t hesitate to reach out to us at Total Comfort Cooling & Heating, Inc. Our team of certified technicians is here to ensure your space is cooled efficiently and effectively, 24/7.


Contact us to get a quote and see why our customer service is recognized as the best in the industry.