Choosing the right air conditioner size for your South Florida home is one of the most important HVAC decisions you’ll make. Too small and your system runs constantly, never reaches temperature, and breaks down early. Too large and you get humidity problems, short-cycling, and wasted energy. Abraham Air Conditioning has been helping Broward County homeowners size and install AC systems correctly since 2003.
📞 Call for a free sizing consultation: (954) 800-8525
In the HVAC industry, AC size is measured in tons (cooling capacity). One ton = 12,000 BTU/hour of cooling. The most common residential sizes in Broward County are 2 ton, 2.5 ton, 3 ton, 3.5 ton, and 4 ton systems. Here’s a general guide:
| AC Size | BTU/hr | General Square Footage (Florida) | Notes |
|---|---|---|---|
| 1.5 ton | 18,000 | 500–750 sq ft | Condo, studio, small apartment |
| 2 ton | 24,000 | 750–1,100 sq ft | Small home or condo |
| 2.5 ton | 30,000 | 1,100–1,400 sq ft | Common starter homes |
| 3 ton | 36,000 | 1,400–1,800 sq ft | Most common Broward home size |
| 3.5 ton | 42,000 | 1,800–2,200 sq ft | Larger single-story or 2-story |
| 4 ton | 48,000 | 2,200–2,600 sq ft | Larger homes, high ceilings |
| 5 ton | 60,000 | 2,600–3,200 sq ft | Large homes, luxury residences |
Important Florida caveat: These ranges assume a properly insulated, code-compliant Florida home. Old insulation, poor attic ventilation, single-pane windows, or high ceilings can push you toward the next size up. A proper Manual J load calculation is the only way to know for certain.
The 3 ton AC unit (36,000 BTU) is the most commonly installed size in Broward County. Most homes in Fort Lauderdale, Oakland Park, Lauderhill, Tamarac, and Pompano Beach in the 1,400–1,800 sq ft range use a 3 ton system. Here’s what to expect:
Usually yes, for a well-insulated 1,600 sq ft home in Broward County. But factors that might push you to a 3.5 ton:
A 3.5 ton AC (42,000 BTU) is the right choice for homes that need a little more than a standard 3 ton can deliver. Common scenarios in Broward County:
A 2,000 sq ft home in South Florida typically needs a Manual J calculation to decide between 3.5 and 4 ton. The answer usually depends on: construction year (post-2004 homes are tighter), window type, insulation levels, and ceiling height. Abraham AC performs full Manual J calculations at no charge with any new system quote.
In Florida, oversizing is actually a bigger risk than undersizing. An oversized AC:
Florida’s high humidity makes this especially critical. A properly sized system runs longer cycles that both cool and dehumidify. This is why working with an experienced local contractor who does proper load calculations matters.
We don’t guess or use square footage rules of thumb (which are notoriously inaccurate in Florida). Our process:
| Brand | 3 Ton Price Range (Installed) | 3.5 Ton Price Range (Installed) | Notes |
|---|---|---|---|
| Goodman (value) | $3,800–$4,500 | $4,200–$5,000 | Best value, solid reliability |
| Rheem | $4,000–$5,000 | $4,500–$5,500 | Popular in South Florida |
| Carrier | $4,500–$5,800 | $5,000–$6,500 | Top tier, excellent warranty |
| Trane | $4,500–$5,800 | $5,000–$6,500 | “It’s hard to stop a Trane” |
| Lennox | $4,800–$6,200 | $5,300–$6,800 | Highest efficiency options |
Q: How many BTU is a 3 ton AC unit?
A: A 3 ton AC unit produces 36,000 BTU/hour of cooling capacity. “One ton” equals 12,000 BTU, so 3 × 12,000 = 36,000 BTU/hr.
Q: What square footage does a 3 ton AC cool in Florida?
A: Generally 1,400–1,800 sq ft in a well-insulated Florida home. However, ceiling height, insulation quality, window area, and sun exposure all affect this — a Manual J calculation is the only precise answer.
Q: Is a 3.5 ton AC right for a 2,000 sq ft house in Broward County?
A: Possibly, but it depends on the home’s construction, insulation, and window situation. A newer 2,000 sq ft home with impact windows may only need 3 tons, while an older home with single-pane windows might need 4 tons. We’ll calculate it precisely with no obligation.
Q: How much does it cost to install a 3 ton AC in Fort Lauderdale?
A: Installed costs for a 3 ton system in Broward County typically range from $3,800–$5,800 depending on brand and SEER rating. Abraham AC provides a firm written quote at no charge before any work begins.
Q: What SEER rating should I buy in South Florida?
A: At minimum 15 SEER2 (the new federal minimum as of 2023 in the South). For Broward County’s near year-round cooling season, 16–18 SEER2 often pays back in 3–5 years through energy savings. Variable-speed 20+ SEER2 units are the best long-term investment but have higher upfront cost.
Q: Can I install a 3.5 ton unit to replace a 3 ton system?
A: Not automatically. Going up in size requires verifying the ductwork can handle the increased airflow and that the electrical supply (breaker, wiring) is appropriately sized. We assess all of this before recommending any size change.
📞 Get a free AC sizing consultation and quote: (954) 800-8525
Abraham Air Conditioning — Broward County’s trusted HVAC contractor since 2003.