Upgrading or replacing your central air system is one of the most important decisions a homeowner can make. A 5 ton air conditioning unit provides robust cooling for large homes or commercial spaces, but knowing the cost to replace an AC unit and what goes into the installation can save you both time and money.
In this guide, we’ll cover everything about air conditioning unit cost, new AC unit cost, and factors influencing your central air replacement cost.
Understanding 5 Ton Air Conditioning Units
A 5 ton central air unit is rated to remove 60,000 BTUs per hour, making it suitable for homes over 2,500 square feet or small commercial spaces. In HVAC terms, one “ton” equals 12,000 BTUs per hour, so a 5 ton system delivers high-capacity cooling for larger areas.
Choosing the correct size is crucial. Oversized units will cycle on and off too frequently, while undersized systems struggle to maintain comfort and efficiency. A central 3 ton air conditioning system is often sufficient for mid-sized homes, but larger homes or commercial properties may require a 5 ton air conditioning unit.
For guidance on sizing and efficiency, the U.S. Department of Energy offers detailed recommendations for home cooling loads.
New AC Unit Cost vs Replacement
One of the first questions homeowners ask is: “How much does a new AC unit cost?” This depends on whether you’re installing a completely new system or replacing an existing one.
New AC Unit Cost
For a new AC system, the unit price alone for a 5 ton system typically ranges from $4,500 to $6,500, depending on efficiency, features, and brand. A higher SEER-rated system, such as 16 SEER, will be at the upper end of the range but will save money in the long run due to lower energy consumption.
Cost to Replace AC Unit
If you’re replacing an older unit, expect a higher overall price because replacement often involves labor, ductwork adjustments, and possible electrical upgrades. The average AC replacement cost for a 5 ton unit can range from $7,000 to $10,000+, including installation.
For detailed pricing and local cost averages, HomeAdvisor is an excellent resource for homeowners planning a replacement.
Factors Affecting AC Unit Cost
The total air conditioning unit cost depends on several factors:
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Unit Size and Capacity: A 5 ton central air unit is more expensive than a 3 ton unit due to higher cooling capacity.
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Efficiency Rating: Units with higher SEER ratings cost more upfront but reduce energy bills.
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Installation Complexity: Homes with older ductwork, electrical upgrades, or unique layouts may incur additional labor costs.
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Type of System: Split systems, package units, and hybrid heat pumps all affect pricing.
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Regional Labor Rates: Costs vary significantly depending on local HVAC labor rates.
For a detailed comparison between unit types and efficiency levels, the Energy Star Air Conditioning Guide is a great resource.
Central Air Replacement Cost
Replacing a central air unit involves more than just swapping out equipment. You’ll need to consider:
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Removal of the old system
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Compatibility with existing ductwork
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Electrical assessments
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Refrigerant considerations
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Startup and testing
These steps influence the central air replacement cost. On average, replacing a central AC unit costs $7,000–$10,000 for a 5 ton system, while smaller units (like 2–3 ton systems) may fall in the $5,000–$8,000 range.
For a comprehensive look at replacement pricing, check out This Old House. They break down labor, material, and unit costs for various home sizes.
How Much Does It Cost to Install a Central AC Unit?
Installation is a significant portion of the new AC cost. For a 5 ton central air unit, installation requires:
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Proper placement of the 5 ton AC condenser outside the home
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Installation of the indoor air handler
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Connecting refrigerant lines and electrical wiring
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Charging the system with refrigerant and testing for leaks
Because a 5 ton system is larger and more complex, installation costs are higher than for smaller units. How much does it cost to install central AC? Expect $2,500–$4,000 in labor, depending on complexity and regional rates.
5 Ton Air Conditioning Unit Components
A full 5 ton AC system typically includes:
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5 ton AC condenser (outdoor unit)
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Air handler or furnace (indoor unit)
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Refrigerant lines
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Thermostat and control system
Modern systems often use R-32 refrigerant, which is more environmentally friendly and energy efficient than older R-410A units. Correct pairing of indoor and outdoor components ensures optimal performance and avoids voiding warranties.
FAQs About New AC Units
How much is an AC unit?
Depends on size and efficiency; a 5 ton unit is typically $4,500–$6,500.
How much does a new AC unit cost installed?
For a 5 ton system, including labor, $7,000–$10,000+.
How much should a new air conditioning unit cost?
Smaller homes may need 2–3 ton units at $5,000–$8,000 installed; larger homes or commercial spaces may require 5 ton systems.
What is the cost to replace central air?
Expect a 5 ton system replacement to be $7,000–$10,000+, depending on labor and ductwork modifications.
How much will a new AC unit cost?
A standard mid-sized system is $5,000–$8,000 installed; high-efficiency 5 ton units can be $9,000+.
Why Upgrade to a 5 Ton Central Air Unit?
A 5 ton air conditioning unit is ideal for:
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Large homes over 2,500 sq. ft.
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Small commercial spaces requiring reliable cooling
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Homes in hot climates or with high ceilings
Benefits include:
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High-capacity cooling without overworking the system
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Energy efficiency when paired with a high SEER-rated unit
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Longevity when properly installed and maintained
Even if you currently have a central 3 ton air conditioning system, upgrading to a larger 5 ton unit may be necessary if your home has expanded or cooling needs have increased.
Final Thoughts
Understanding air conditioning unit cost, central air replacement cost, and new AC system cost is essential before making an investment in a 5 ton system. A properly sized and installed 5 ton central air unit provides comfort, efficiency, and long-term savings.
For those considering a benchmark for high-quality HVAC systems, the Goodman 3 Ton 14.5 SEER2 R-32 Bundle illustrates how efficient, modern systems operate—principles which scale when moving up to a 5 ton system.
Replacing your AC is a major home investment, but with the right information, you can make an informed decision, ensuring comfort and energy efficiency for years to come.
