Is My Air Conditioner Oversized?
An oversized air conditioner is the most common cause of a cold-but-clammy Florida home. Compare your current system size to your home's estimated cooling load to see if it's too big.
Divide your conditioned square footage by your system's tonnage. In Florida, roughly 450-650 sq ft per ton is normal (tighter, newer homes land higher). If your system is more than about 25% larger than the estimated load, it's likely oversized — which short-cycles and leaves rooms humid. A Manual J load calculation confirms it.
Why this matters
Use this before replacing a system size-for-size: Florida homes are frequently oversized, and a right-sized, longer-running system controls humidity far better.
The public-safe rule
This page gives an educational planning result. Final quote, rebate, payment, package, and installer details wait until the customer and home record are saved inside the assessment flow.
Start exact assessmentRun the numbers.
Your AC looks about right — 92% of the estimated load
A 3-ton system on roughly 1,800 sq ft is close to the ~3.5-ton load this home suggests.
Verdict
About right
Your system
3 tons
Estimated need
3.5 tons
Size vs. load
92%
Your comfort note fits an oversized unit
This compares your system tonnage to a Florida square-feet-per-ton rule of thumb, adjusted for how tight the home is. It's a screening estimate — a Manual J load calculation is the accurate sizing method.
If comfort is good and humidity is controlled, your size is likely fine — focus on maintenance and efficiency.
Before replacing, get a Manual J load calculation rather than matching the old size — Florida homes are frequently oversized from the start.
This is a planning estimate, not a final quote or engineering report. Field conditions, permits, equipment selection, ducts, electrical work, and installer verification can change the result.
How this estimate is grounded.
The visible result, assumptions, and schema match. Structured data does not claim anything that is not also shown on the page.