HVAC System Sizing & Energy Savings Calculator
Find the right AC system size for your Southwest Florida home and see how much you could save on cooling costs by upgrading to a high-efficiency SEER2 system.
Your Home Details
Adjust the values to size your ideal cooling system.
Efficiency Comparison
Compare your current system to a modern upgrade.
Default set to FPL residential average. Adjust if your rate differs.
48,000 BTU/hr cooling capacity — properly sized for 1,800 sq ft in Southwest Florida.
This is a preliminary estimate. A free in-home Manual J load calculation confirms exact sizing before installation.
per year on cooling costs
Current System
13 SEER
$1,056
New System
18 SEER2
$763
10-Year Savings
$2,933
Energy Reduction
28%
Understanding Your Results
Right-Sized Cooling
An oversized AC short-cycles and fails to dehumidify; an undersized one runs nonstop. We size for balanced comfort and humidity control specific to Florida's climate.
SEER2 Efficiency
Higher SEER2 ratings mean more cooling per watt. Upgrading from a 13 SEER to an 18 SEER2 system can cut cooling energy use by roughly 28%.
Real SWFL Savings
With ~2,200 cooling hours per year in Lee County, even modest efficiency gains add up to hundreds of dollars annually and thousands over a system's life.
Disclaimer: This calculator provides a general estimate based on simplified industry rules of thumb for Southwest Florida's hot-humid climate. Actual system sizing requires a full ACCA Manual J load calculation performed on-site, which we include free with every replacement estimate. Savings estimates assume typical usage patterns and are not a guarantee of actual costs.
Ready to Turn Savings Into Comfort?
Get a free, no-pressure in-home replacement estimate with a full Manual J load calculation and upfront written pricing.