A new AC unit in Florida typically costs between $3,500 and $12,000 installed, depending on the size of your home, the brand you choose, and the condition of your existing ductwork. Here's a complete breakdown of what to expect when budgeting for a new system in South Florida.
Price by System Size — The most important factor in AC cost is the size (tonnage) of the unit your home requires. For a home around 1,000 square feet, a 2-ton system typically runs $3,500–$6,000 installed. A 2.5-ton system for roughly 1,250 square feet costs $4,000–$7,000. A 3-ton unit covering up to 1,500 square feet ranges from $4,500–$8,000. Larger homes needing a 4-ton system (around 2,000 sq ft) should budget $5,500–$10,000, while a 5-ton system for 2,500+ square feet can run $6,500–$12,000. These are all-in prices including equipment, labor, and the required Miami-Dade permit.
SEER Rating: Efficiency vs. Upfront Cost — The SEER (Seasonal Energy Efficiency Ratio) rating measures how efficiently a unit uses electricity. Higher SEER means lower monthly FPL bills, but higher upfront cost. Florida's minimum is SEER 15 for new systems. A SEER 16–18 system costs roughly $500–$1,500 more than a baseline model but can cut your cooling costs by 10–20% per year. In Miami, where AC runs nearly 12 months a year, paying more for efficiency pays off faster than in northern states.
Brand Comparison — Brand choice significantly impacts price. Carrier and Trane are premium brands running 15–25% above average — you're paying for exceptional reliability and dealer support. Lennox is similarly premium with strong efficiency ratings. Rheem and York land in the mid-range, offering excellent value. Goodman is the budget-friendly option, popular for rentals and second homes — reliable but with a shorter expected lifespan. All brands we install come with at least a 5-year parts warranty, and 10-year warranties are standard on compressors.
Florida-Specific Requirements That Add Cost — Miami-Dade County requires a permit for every AC installation — expect to add $150–$400 to your total. Florida also mandates hurricane straps on outdoor condenser units, which adds a small but non-negotiable cost. In coastal areas like Miami Beach, Aventura, and Key Largo, we recommend units with factory-applied salt-spray coatings on condenser coils — these cost about $300–$600 more but dramatically extend the unit's life against our corrosive ocean air.
Ductwork: The Hidden Cost Factor — If your home has existing ductwork in good condition, installation is straightforward. If the ducts are old, leaking, or incorrectly sized, repairs or replacement can add $1,000–$4,000 to your project. In South Florida's humid climate, leaky ducts not only waste energy — they can pull humid attic air into your living space, driving up both your FPL bill and the risk of mold. We always inspect ductwork before quoting a system replacement.
The ROI Case for Upgrading — Many homeowners hesitate at a $7,000–$9,000 investment. Consider this: if you're currently paying $220/month on your FPL bill and a new, properly-sized high-SEER system reduces that by $80–$100/month, you're saving $960–$1,200 per year. At that rate, a $7,000 system pays for itself in 6–7 years — and modern systems last 15+ years with proper maintenance. You also benefit from improved comfort, fewer breakdowns, and reduced repair bills.
Financing Makes It Manageable — We offer flexible financing options so you don't have to drain your savings for a new system. Many of our customers opt for 12-month no-interest financing or low monthly payment plans. A $7,500 system financed over 60 months is around $140/month — often less than the energy savings you'll see on your FPL bill. Ask us about current financing promotions when you call.
What the Installation Includes — A proper AC installation by a licensed contractor includes: removal and disposal of your old unit, new equipment installation, refrigerant charging, thermostat setup or replacement, system testing and calibration, permit filing, and manufacturer warranty registration. Beware of unusually low quotes — unlicensed contractors often skip the permit, use inferior refrigerant practices, and leave you with no warranty protection.
Ready to find out exactly what a new AC system would cost for your South Florida home? Call MGM A/C Appliances at (786) 352-0084 for a free, no-obligation estimate. We serve all of Miami-Dade and Broward Counties, and we'll give you straight answers — no pressure, no surprises.