How Much Does It Cost To Install Central Air?
Wondering if central air conditioning is within your budget? The cost to install central air can vary widely, leaving many homeowners unsure about whether it’s a feasible option.
The average cost of installing central air ranges from $3,600 to $8,200. The final price to install central air depends on factors like unit size, efficiency, labor costs, home size, and additional specifics like ductwork and permits.
In this article, we’ll break down all the expenses, from the initial installation to the hidden costs, to help you make an informed decision about cooling your home efficiently and affordably.
What Factors Influence the Costs of Central Air Conditioning (AC) Installation?
How much does it cost to install central air conditioning? Well, the cost can vary based on several factors such as size, efficiency, labor, and brand.
Not to mention, according to Statista, the air conditioner market in the United States generated $8.52 billion in revenue in 2024. This highlights the significant demand and investment in this area.
Nevertheless, let’s break down each factor one by one below:
Central AC System Size
The size of your central air system doesn’t refer to its physical dimensions but rather its cooling power or capacity. This capacity is measured in BTUs, or “British Thermal Units”.
One ton is equal to 12,000 BTUs, so a 3-ton air conditioner is equivalent to 36,000 BTUs.
The larger the unit, the higher its cooling capacity and cost. On average:
- A 1-ton AC unit can cool 500 to 600 square feet.
- A 1.5-ton unit can adequately cool 750 to 900 square feet.
Here’s a breakdown based on different sizes:
| Unit Size (in TONS) | BTUs | Average Central AC Cost Range |
|---|---|---|
| 1.5 | 18,000 | $2,500 – $4,500 |
| 2 | 24,000 | $3,100 – $5,100 |
| 3 | 36,000 | $3,400 – $5,400 |
| 4 | 48,000 | $4,200 – $6,200 |
| 5 | 60,000 | $4,300 – $6,800 |
Square Footage
The size of the air conditioning unit you need is determined by your home’s square footage. Larger homes require units with higher cooling capacities (BTUs).
For example, to cool 750 to 900 square feet, you would need an 18,000 BTU unit, which is a 1.5-ton unit and can typically cost between $2,500 and $4,500.
Don’t forget to consider the higher monthly costs associated with running larger units for bigger homes. Additionally, if your home has vaulted ceilings, you’ll need a central unit with more output, which will also increase the cost.
| Home Size (Sq Ft) | Central AC Unit Cost on Average |
|---|---|
| 750 – 900 | $2,500 – $4,500 |
| 1,000 – 1,200 | $3,100 – $5,100 |
| 1,500 – 1,800 | $3,400 – $5,400 |
| 2,000 – 2,400 | $4,200 – $6,200 |
| 2,500 – 3,000 | $4,300 – $6,800 |
Type of Central AC System
The size and layout of your home can influence the type of central air conditioning system you choose, which will affect the overall cost. Here are a few types:
| Type of Central Air Unit | Estimated Cost Range |
|---|---|
| Packaged central air conditioner | $1,500 - $7,900 |
| Split-system central air conditioning | $600 - $20,000 |
| Geothermal heat pumps | $4,200 - $24,000 |
| Air-source heat pumps | $3,000 - $8,000 |
Packaged Central Air Conditioner
Packaged central AC units, which are popular among homeowners, house the compressor, condenser, and evaporator in a single outdoor unit.
These units are usually installed on a roof or the side of your home, with costs ranging from $1,500 to $7,900.
Make sure to factor in the costs of ductwork if it needs to be installed.
Split-System Central Air Conditioning
This system consists of an outdoor unit (condenser and compressor) and an indoor unit (evaporator coil) connected by refrigerant lines and can cost anywhere between $600 to $20,000.
The best part is that it doesn’t require ductwork, making it an economical option for homes with an existing furnace.
Geothermal Heat Pumps
Geothermal heat pumps use underground loops to transfer heat between your home and the ground for both heating and cooling. They provide consistent efficiency regardless of outdoor temperatures.
While the initial cost can range from $4,200 to $24,000, these systems offer greater long-term efficiency and lower operating costs.
Air-Source Heat Pumps
Air-source heat pumps transfer heat between your home and the outside air using above-ground units. They can heat and cool efficiently but may be affected by extreme outdoor temperatures.
These systems cost between $3,000 and $8,000, and are easier to install, but might have higher operating costs in extreme climates.
Efficiency Ratings
The efficiency rating of a central air conditioning unit, commonly measured by the Seasonal Energy Efficiency Ratio (SEER), greatly affects both the initial cost and long-term operating costs.
According to the US Department of Energy (DOE), the minimum SEER ratings for central air conditioners increased to 14 SEER in the northern U.S. and 15 SEER in the southern U.S. in 2023.
Units with higher SEER ratings tend to be more expensive upfront, but their improved efficiency can lead to significant savings on energy bills and a reduced environmental footprint over time.
| SEER Rating | Average Unit Cost |
|---|---|
| 14 | $2,700 |
| 15 | $3,500 |
| 16 | $4,100 |
| 17 | $4,900 |
| 18 | $5,500 |
| 19 | $6,200 |
| 20 | $6,950 |
Brand
The cost of a central air conditioning unit can vary between brands due to differences in quality, reputation, and features.
Statista reported that Carrier, based in the United States, was the largest company worldwide in the plumbing, heating, and air conditioning installation industry in 2022.
Here’s a cost breakdown of some well-known brands for a standard efficiency 2.5-ton central AC unit:
| AC Brand | Price of the AC |
|---|---|
| Coleman | $1,775 |
| York | $1,800 |
| Rheem | $1,975 |
| American Standard | $2,300 |
| Carrier | $2,625 |
| Lennox | $2,700 |
| Trane | $3,000 |
Labor
The labor cost to install a central AC unit can vary based on location, the complexity of the installation, and the contractor’s experience.
Typically, HVAC contractors charge hourly rates ranging from $80 to $150. If the ductwork is already in place, installation typically takes around 8 hours, resulting in total labor costs of $640 to $1,200.
Keep in mind that prices can increase during busy seasons.
Hidden Costs in Your Estimate
When estimating the cost of a central air conditioning system, there are several “hidden costs” that you should be aware of:
Ductwork
Ducts and vents allow the cooled air to flow through your home. If you already have ductwork, installing central air conditioning will cost less.
However, if your home doesn’t have ductwork, the cost goes up significantly. Replacing old ductwork can make it even more expensive due to added labor and complexity.
When figuring out the cost to install central air without existing ductwork, remember to include the cost of duct installation, which averages around $2000.
Pre-Installation Evaluation
A pre-installation evaluation is a key step when installing central air conditioning. It lets an HVAC professional assess your home's current infrastructure to determine the right size and type of unit.
This evaluation might also include an energy audit, which identifies ways to improve your home's energy efficiency, like sealing leaks or adding insulation.
A thorough evaluation helps with accurate budgeting, proper planning, and avoiding unexpected expenses. It can save you money on energy bills, and future repairs, and boost the system's efficiency and lifespan.
You can expect to pay at least $200 for this evaluation by a qualified HVAC technician.
Permits and Compliance
Depending on your local building codes and regulations, you might need permits to install central air, which can add to the cost.
Compliance with local codes can sometimes require additional work, further increasing the price.
Additional Features and Upgrades
Optional features like smart thermostats, air purifiers, or noise reduction technology can enhance the functionality of your AC system but will add to the total cost.
Electrical Upgrades
Installing a central AC unit often means making changes to your home's electrical system.
This could involve upgrading the electrical panel to handle the increased load, running new wiring to the unit, and ensuring all connections meet safety standards.
These electrical updates can add several hundred to several thousand dollars to the installation cost, depending on the complexity and the current state of your home’s electrical system.
Removal of Old System
Removing an old system can add several thousand dollars to the new AC installation cost.
Why, you may wonder?
First, removing an old central air system involves labor, which increases the overall installation cost.
If the old system's ductwork is outdated or incompatible with the new unit, it may need to be repaired or replaced.
During the removal process, HVAC professionals might find additional repairs or upgrades necessary. This could include electrical system upgrades, thermostat replacements, or structural adjustments to fit the new unit.
Additionally, disposing of the old system incurs costs, like recycling fees for refrigerants and other components.
How to Effectively Save Money on Central Air Installation?
Conclusion
Installing central air can be a big investment, costing between $3,600 and $8,200. While DIY-ing it might save money, it’s not advisable as it can void warranties, create safety hazards, and cause inefficiencies.
It’s best to hire a trusted local professional using the HomeBuddy tool to ensure efficient, safe, and reliable installation. This will save you time and minimize inconvenience.
Frequently Asked Questions
- Central air conditioning cools the entire home by circulating cool air through ducts. It consists of an outdoor unit (compressor and condenser) and an indoor unit (evaporator coil). Refrigerant absorbs and releases heat, cooling the air before distribution.
- Yes, you can use your existing ductwork with a new AC unit, provided the ductwork is in good condition and appropriately sized for the new system. It’s often recommended to have the ducts inspected and cleaned to ensure optimal performance and efficiency of the new unit.
- To maintain your AC unit, regularly change or clean the filters, keep the area around the outdoor unit clear of debris, check and clean the coils, and ensure the unit is level. Additionally, schedule professional maintenance twice a year for thorough inspections and servicing.
AC units generally last between 10 to 20 years, depending on maintenance, usage, and climate conditions. Well-maintained central air conditioners typically last 12 to 17 years, while ductless mini-split systems can last up to 20 years.
