Air conditioners (ACs) keep homes comfortable during scorching summer months. Whether you live in a desert climate or a high-humidity area, adding a cooling system to your home is a good way to beat the heat.
Older units consume more electricity and frequently need repairs, so replacing them with more efficient models can save you money in the long run, but you’ll have to pay between $3,300 and $8,000. According to the U.S. Department of Energy (DOE), newer air conditioner designs use 30%–50% less energy than they did 30–40 years ago. Even 10-year-old AC units can use up to 20%–40% percent more energy than newer systems due to outdated technology and aging parts.
The cost of air conditioning includes the unit itself, installation, maintenance, and energy bills. We conducted in-depth research on the best AC brands to provide average costs and give you an idea of what to expect. Pricing can vary depending on factors such as location, home size, and property details.
Cost figures in this article are based on 2025 reports from Angi, The Home Depot, and HVAC.com.
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How Much Do Air Conditioners Cost by Type?
Choosing an AC system involves more decisions than just price. Your home may require a certain type, or you may prefer one type over another based on your comfort. Keep reading for information on the five most popular air conditioners and their average prices. If you still need help figuring out what is best for your house, enter your ZIP code below and connect with a local professional:
Central Air Conditioning
Central AC units are the most popular air conditioners and are found in millions of homes throughout the country. They extract air from the inside of the house, then compress it with refrigerant in the outdoor condensing unit. The remaining gas is then sent through the condenser coils to be turned into a hot liquid. The new fluid travels to the evaporator coils on the indoor furnace unit and transforms into a cool evaporated gas. Fans and centralized ductwork distribute the air throughout your home.
Purchasing a central air conditioner may be your best option if you already have ductwork installed throughout the house. Depending on the size and other factors, the total average cost for these is typically between $3,300 and $8,000, including installation costs.
Window AC Unit
The process of cooling air in a window air conditioner is similar to a centralized one, but on a much smaller scale. Window AC units are only intended to cool the room they’re placed in, rather than the whole house. They feature fans that blow the cool air throughout the room, and they expel the hot air outside through the window.
These units are the cheapest on the market, and they typically don’t require any installation. You simply purchase it and set it up in your window within minutes. They’re sold based on power level with room size in consideration. Here are some examples of power levels in British thermal units (BTUs) and their associated square footage:
- 5,000–8,000 BTU: 150–350 square feet
- 8,000–12,000 BTU: 350–550 square feet
- 12,000–18,500 BTU: 550–1,050 square feet
- 18,500–25,000 BTU: 1,050–1,600 square feet
Window air conditioners don’t typically require professional installation, and window AC unit costs are as low as $150–$750.
Ductless Mini-Split
If your home doesn’t have any ductwork installed, mini-split air conditioners may be the best option. They allow you to control temperatures in each zone of your home. Another benefit of this type is that it doesn’t use as much electricity and requires only one power supply connection.
Pricing for these air conditioners can vary depending on how many zones you need to condition. In other words, if you have a larger house, you’ll need to install a few different indoor units, which can be costly. Because of the varying costs, we estimate the total average cost range for mini-split AC units is $1,500 to $8,000.
Geothermal
Geothermal heat pumps are HVAC systems that offer both heat and air conditioning throughout your home via ground-sourced temperatures. It uses water and antifreeze solution in tubing about 4 feet in the ground to capture heat and transfer it into the compressor of the unit. Then, the air is compressed, sent to evaporator coils, heated or cooled to desired temperatures, and blown through the home through centralized ducts and vents. It can also extract hot air from your house during cooling and send it back into the ground.
Geothermal heat pumps require extensive labor for installation, including digging trenches and laying piping. As such, this is one of the most expensive air conditioner options. Total price averages reach $13,000–$36,000. However, it’s one of the most efficient ways to condition the air in your house, using minimal electricity or gas. It could definitely pay off in the long run.
Dual Fuel
Dual fuel systems are similar to central air conditioners, utilizing the coils on your indoor furnace unit. The primary difference is that they include heat pump technology to help lower the cost of your energy bill.
Dual fuel systems are an ideal solution for those living in colder states. It offers a gas furnace to help heat your home during the winter when the temperature drops too low for the heat pump to run efficiently. However, it can also be beneficial for cooling your home by using air-source heat from the heat pump to condense and evaporate cool fluid in the air-distribution features of the furnace unit, blowing comfortable air throughout the house.
The costs of dual fuel heat pump systems can vary depending on the size needed for the home. The overall average for the installation and unit falls between $4,000 and 8,000. Like geothermal heat pumps, these systems can save you money on your energy bill over time.
| Type | Unit Cost | AC Installation Cost |
|---|---|---|
| Central air conditioner | $1,200–$4,500 | $1,200–$2,200 |
| Window AC unit | $150–$750 | N/A* |
| Ductless mini-split | $1,000–$5,500 | $500–$2,000 |
| Geothermal | $3,000–$6,000 | $10,000–$30,000 |
| Dual fuel | $2,800–$5,500 | $1,300–$2,500 |
*You can typically install window AC units on your own.
What Factors Affect the Cost of Air Conditioners?
When buying a new air conditioner, it’s easy to focus on price. However, you should consider several factors before making your purchase. To make sure you’re getting the best system for your home, speak with an HVAC contractor about specific models, installation costs, efficiency, and more. Here are some of the biggest factors that affect the overall costs.
Size
Each air conditioning system has recommended sizes for a certain square footage that they are capable of cooling effectively. If your unit is too small for your space, it has to work harder to cool your home. This results in increased energy bills, wear and tear, and more frequent repairs and maintenance.
The size of an AC unit is often measured in “tonnage,” with higher tonnage models more effectively cooling large homes. Generally, you should follow a square footage to tonnage chart to find the best size or consult a professional contractor. Every home is different, so a local HVAC installer will usually inspect your space and analyze its cooling requirements.
Brand
While there’s a wide selection of AC models and brands, choosing a well-known manufacturer helps ensure longevity, trust, and reliability for your home’s cooling system. Many of these brands offer models that are more energy-efficient and long-lasting. While they may not be the cheapest option, many people are willing to pay the premium for increased longevity, a robust warranty, better energy efficiency, and more.
Installation
Other than when purchasing smaller units like a window or portable AC, installation is one of the most costly parts of the purchase after choosing a device. Installation costs are separate from equipment fees and are based on the time to do the job and the type of system you choose.
Central air systems are often the most popular but come with the most expensive and invasive process since they usually require ductwork replacement. If you don’t have ductwork in your home or if it’s in poor condition, you might want to consider a split or ductless system since these require little or no ductwork to install.
Seasonal Energy Efficiency Ratio (SEER)
The SEER rating measures an air conditioner’s energy performance over the season. Measured in BTU (British Thermal Units) per watt, most air conditioners sold in the U.S. have a SEER rating between 13 and 21. The higher the rating, the more efficient the system and the lower your utility bills will be.
When choosing a SEER rating for your home, consider your local climate, home size, and cooling needs. Systems with a higher SEER rating are usually more expensive but can save you money in the long run if you live in a hot climate or a larger home.
Tax Credits
The Energy Tax Incentive Act provides energy tax credits for homeowners who install Energy Star-certified systems in their homes. Typically, any system with a SEER rating over 13 or 14 is Energy Star rated, enabling you to be eligible for state or federal rebates and save money on initial installation costs. These SEER ratings vary between models and states, so you should check with your local contractor.
What Are Common Air Conditioner Repair Costs?
If your air conditioner breaks down, you’ll need to hire a technician to diagnose and fix the problem. Many home warranty plans cover AC repairs, so check your contract and call your provider. If you don’t have a home warranty, you could face higher costs out of pocket depending on the problem and your type of system. Here are some common AC repairs and their costs:
- Coil cleaning ($250–$1,000): Dirty evaporator or condenser coils can reduce cooling efficiency and strain the system. Regular cleaning helps prevent costly repairs and extends your unit’s lifespan.
- Compressor repair or replacement ($600–$1,200): A malfunctioning compressor can prevent your AC from turning on. In many cases, replacing the compressor is more cost-effective than repairing it, especially for older systems.
- Electrical issues ($100–$150): Problems with the circuit breaker, capacitor, or wiring can cause your system to malfunction. If you notice burning smells or unusual noises, call a technician to inspect the unit and make necessary repairs.
- Refrigerant recharge ($200–$1,300): If your AC isn’t blowing cool air, it may have low refrigerant levels due to a leak. A technician will need to repair the leak and add new refrigerant. Keep in mind that older refrigerants, such as Freon® (R-22), are banned by the Environmental Protection Agency (EPA), which can increase the cost of a recharge.
Repair vs. Replacement: What To Consider
Air conditioners typically last 10–15 years. If your system is approaching the 10-year mark and repair costs exceed $1,000, replacing it may be a smarter long-term investment. Regular HVAC maintenance, such as cleaning coils and changing filters, can extend an AC’s lifespan, but all units eventually wear out. Here are other AC repairs and their average costs:
| Common Repair | Average cost |
|---|---|
| Leak | $200–$1,300 |
| Drainage problems | $100–$150 |
| Compressor replacement | $600–$1,200 |
| Frozen condenser coils | $250–$1,000 |
| Fan or air blower issues | $450–$650 |
| Clogged air filter | $75–$180 |
| Electrical circuits | $100–$150 |
| Thermostat | $100–$250 |
FAQ About Air Conditioner Costs
Can I install my own air conditioner?
Installing air conditioning units almost always requires hiring an HVAC contractor since the wiring, tubing, and piping can be complex. They can also include dangerous chemicals that should not be spilled. However, if you’re just purchasing a window AC unit, you can install it in your window without an HVAC expert in most cases.
Which air conditioner is the most efficient?
Heat pumps can offer the most efficient way to heat and cool your home by using external sources such as air, water, or ground temperatures. Many residents who use heat pumps for their air conditioning save substantial amounts on their electricity or natural gas energy bills. Dual fuel or geothermal heat pumps are two options to consider.
What’s the difference between an air conditioner and a heat pump?
A heat pump is a type of air conditioner and heating system that can provide hot and cool air throughout your house. It’s similar to a central air conditioning unit in that it typically uses ductwork in your home to distribute the air. Speaking to an HVAC professional can always help you determine what would be the best fit for your house.
What is the electric cost to run an air conditioner daily?
The daily energy cost of your air conditioner can vary depending on its size, the power needed to cool your house, and the desired temperatures. However, our research found that air conditioners usually cost about $2–$5 per day. Different types of air conditioners require less energy, so shop around for the best one to fit your budget.
