A new window AC unit can cost anywhere from $60 for a small model you install yourself to $1,200 for a large unit with professional installation. The average cost for a 1-ton window AC unit ranges from around $300–$800, and installation can cost an additional $200–$1,000, depending on the job’s complexity and the cost of labor in your area.
When you compare these costs to those of purchasing and installing central air, a window AC unit is much more affordable. Based on our research into the best AC brands, the average cost to install a central air conditioning unit ranges from $6,400 to $21,000. Professional installation can cost an extra $200–$700.
Find Expert Help
- Use our expert research to learn more about your project
- Enter your ZIP code and tell us about your home
- Match with local experts who can meet your needs
Get Estimates from HVAC Experts in Your Area
Compare quotes from top-rated local pros
Clicking “Get Your Estimate” submits your data to Home Service Quotes, which will process your data in accordance with the Home Service Quotes Privacy Policy.
What Factors Affect Window AC Installation Cost?
The cost of installing a window air conditioner can vary based on several key factors. Understanding these variables can help you estimate expenses and plan accordingly.
- Labor costs: While installing a window AC unit is often a DIY-friendly task, hiring a professional adds to the total cost. If modifications are needed, such as reinforcing the window frame, sealing gaps, or adding support brackets, labor expenses increase. The complexity of the installation and local labor rates will also affect the final price.
- Type of AC unit: Among air conditioning options, window units are generally the most budget-friendly compared to alternatives like portable ACs, ductless mini-splits, or central air systems. However, premium window units with advanced features such as smart controls, energy efficiency ratings, or dual-inverter technology can come at a higher price.
- Unit size: The size and cooling capacity of your AC unit significantly impact the overall cost. Larger units with higher British Thermal Unit (BTU) ratings, which are designed to cool bigger spaces, tend to be more expensive than smaller, lower-BTU models.
Window AC Installation Cost by Size of Unit
The size of an air conditioning system is measured in tons. This doesn’t refer to the unit’s weight but the volume of air it can cool within an hour. Cooling capacity can also be measured in British thermal units (or BTU). As you might expect, the AC unit cost for larger and more powerful air conditioners will be higher. Central air conditioning systems can be as large as 5 tons or more, but window AC units are usually 2 tons or less.
Cost by Unit Size
| Unit Size (Tons) | Unit Size (BTUs) | Cost |
|---|---|---|
|
0.5 |
5,000–9,000 |
$60–$500 |
|
1 |
10,000–14,000 |
$350–$500 |
|
1.5 |
15,000–18,000 |
$500–$700 |
|
2 |
19,000–24,000 |
$700–$1,000 |
The size you need will be determined by the amount of space you need to cool. Remember that window AC units are useful for cooling a single room, so measure the room’s square footage and budget accordingly. You should also take into account the amount of direct sunlight that the room in question gets.
- Note that bigger isn’t always better, and if you buy too big a unit, you might end up paying more in operating costs for the same result.
Recommended BTUs by Room Size
| Room Size in Square Feet | Recommended BTUs | Cost |
|---|---|---|
|
150 |
5000 |
$60–$500 |
|
250 |
6000 |
$60–$500 |
|
300 |
7000 |
$60–$500 |
|
550 |
12000 |
$350–$500 |
|
700 |
14000 |
$350–$500 |
|
1,000 |
18000 |
$500–$700 |
Window AC Installation Cost by Unit Type
A window unit is probably the most popular single-room air conditioner, but it’s not the only option. Here are some other types, plus the unit and installation costs associated with a central air conditioner for comparison.
| AC Unit Type | Cost |
|---|---|
|
Window AC |
$60–$1,200 |
|
Portable AC |
$300–$1,500 |
|
Mini-split AC |
$1,300–$4,500 |
|
Wall-mounted AC |
$3,150–$9,000 |
|
Central AC |
$5,000–$12,000 |
|
Heat pump |
$2,000–$30,000 |
Window Air Conditioner
Window air conditioners are all-in-one units that sit on the lower sash of a partially-opened window. The air handler, compressor, and condenser are all housed in the same casing to take up minimal space. These units must be partially outdoors to allow the condenser to vent heat. Window air conditioners aren’t as powerful or portable as other types, but they’re the least expensive and can typically be installed non-professionally. The price range is $60–$1,200 depending on size and whether you choose professional installation.
Portable Air Conditioner
Portable AC units can be easily moved from room to room and even stored when not in use. They have tubing that must be directed out of an open window to vent heat, and they often have wheels for easy movement. Despite this, many are bulky and difficult to move around, and they take up floor space. Fortunately, they don’t require professional installation, so you’ll only pay the unit cost of $300–$1,500.
Mini-Split Air Conditioner
A type of wall-mounted AC that’s becoming more popular is a ductless mini-split system. This system has at least two parts: an indoor air handler that’s usually mounted high up on a wall and an outdoor condenser unit. The parts must be connected so that refrigerant can flow between them. Larger systems can have more than one air handler to cool multiple rooms without the need for ducts. Mini-split systems cost anywhere from $1,300 to cool one room, to $4,500 for a system with multiple air handlers.
Wall-Mounted Air Conditioner
Wall AC units may be about the same size and power as window units, or they may be larger and more powerful. They work approximately the same as window AC, with all the parts in a single housing that must vent to the outdoors. However, instead of taking up window space, they’re installed directly into an exterior wall. Installation is much more expensive because it requires cutting into a wall and rewiring. In-wall units typically cost $3,150–$9,000 to install.
Central Air Conditioner
Of all air conditioning systems, central AC installation costs are the highest. That’s because, in addition to the large condenser and air handler units, central air conditioning requires a system of ductwork to move cool air through the house. A low-end central AC for a small house starts at around $5,000, but a large, high-end system can cost $12,000 or more.
Heat Pump
Heat pumps are high-efficiency home HVAC systems that bring in warm air in the winter and produce cool air in the summer. They work by transferring heat between indoor and outdoor environments, but their cooling function works on the same principle as other types of air conditioning. The price range for a heat pump is anywhere from $3,000–$20,000 because there are many different types with different power sources.
How Much Does Window AC Installation Cost?
If you choose professional window air conditioner installation, you’ll pay between $50–$200 depending on the job’s difficulty. Most HVAC contractors charge an hourly rate, though there may also be a flat service call fee. You’ll pay a bit more if you need the technician to remove and dispose of an old air conditioning unit.
What Additional Costs Should You Consider?
Aside from the factors above, there are a few other things to take into consideration when estimating the cost of window air conditioning installation.
Total Installation Project Costs
Even for standard installation of a basic window unit, multiple factors make up the total cost. Here’s what’s typically involved.
- Old unit removal: If you’re replacing an old AC unit that doesn’t just pop easily out of a window, the HVAC technician may charge $40–$120 to remove it.
- Cost of new unit: Of course, you’ll need to purchase the new AC unit, which may cost as little as $60 for a small, 5,000 BTU unit or as much as $1,000 for a large, high-tech unit.
- Installing new unit: Labor costs can vary from $50–$200 depending on how complex the project is.
- Additional materials: Your new AC may require some extra materials like weather stripping, fittings, or mounting hardware. This is usually an inexpensive addition at $15–$20.
- Disposal of old unit: Old AC units can’t simply be taken to the dump, but HVAC contractors will usually dispose of them for you for $25–$50.
| Project Aspects | Cost |
|---|---|
|
Old unit removal |
$40–$120 |
|
Cost of new unit |
$60–$1,000 |
|
Installing new unit |
$50–$200 |
|
Additional materials |
$15–$20 |
|
Disposal of old unit |
$25–$50 |
|
Total cost |
$190–$1,390 |
Temporary vs. Permanent Unit
Many homeowners who opt for window AC units only want to use them during the year’s hottest months and store them when they’re not needed. This temporary installation is less complex and usually costs $50–$75. On the other hand, if you want the window unit to remain in place all year, this type of installation takes a little more effort and tends to cost $100–$150. However, the result is usually a little more discreet and low-profile than temporary installation.
What is the Cost of Running a Window AC?
The cost to use your air conditioner will depend on many variables, such as the climate, the price of electricity, and how frequently you use the unit. Assuming an electricity price of about $0.13 per kilowatt-hour, here’s how much you can expect to pay to run your window AC eight hours a day for 30 days.
| Unit Size (in BTU) | Monthly Cost |
|---|---|
|
5000 |
$16.00 |
|
8,000 |
$20.40 |
|
10,000 |
$26.40 |
|
12,000 |
$33.60 |
|
15,000 |
$46.80 |
Extra Features
All window units should have a thermostat that automatically shuts them off when the room reaches the desired temperature. However, if you want more control, you can pay a little extra for smart features. Some window units come with a remote control, and others connect to your Wi-Fi network, allowing you to control them from any distance.
DIY vs. Professional Window AC Installation
Installing a window AC unit is often a straightforward do-it-yourself (DIY) project, but in certain situations, hiring a professional may be the safer and more efficient choice.
When To Hire a Professional for Window AC Installation
If any of the following apply, it’s worth considering a professional HVAC technician or electrician to ensure a safe and secure installation:
- Heavy unit: If the AC unit weighs 200 pounds or more, professional installation can prevent improper handling or potential damage to the window frame.
- High BTU rating: Units over 15,000 BTUs may require a dedicated electrical circuit or special wiring, which should be handled by a licensed electrician.
- Limited electrical access: If there’s no nearby electrical outlet, an electrician may need to install a new one. Extension cords should never be used for AC units due to fire hazards.
- Older homes: If you live in an older home, the electrical system may need an upgrade to handle the higher power demand of a new AC unit.
- Structural concerns: If the window sill or frame is weak or damaged, a pro can assess and reinforce it before installation.
- Uncertain wiring capacity: If you’re unsure whether your home’s wiring can support the unit’s electrical load, consulting an electrician can prevent circuit overloads or safety risks.
While hiring a professional comes with additional labor costs, it ensures proper installation and may include a workmanship warranty, giving you peace of mind that your unit is securely in place.
DIY Window AC Installation
For most window air conditioners, especially smaller, lightweight models, installation can be a simple DIY task. Manufacturers typically include an installation kit with brackets, side panels, and instructions to help secure the unit in place.
Handling the installation yourself can save you labor costs. Follow these best practices to ensure safety and efficiency:
- Get assistance for heavy units: If the AC is bulky or difficult to maneuver, having an extra set of hands can make the process safer and easier.
- Secure the unit properly: The AC must be installed tightly so it doesn’t shift or fall from the window.
- Use the right tools: You’ll need a utility knife, screwdriver, power drill, torpedo level, and tape measure.
Whether you choose a DIY or professional installation depends on the unit size, the system’s electrical needs, and your comfort level with the process.
Our Conclusion
A window air conditioner unit costs far less for both installation and energy bills than a central AC system and, with proper HVAC maintenance, has a lifespan of about 10 years. In most cases, you can install it yourself. An Energy Star-rated AC unit will have the highest efficiency rating, and there may even be rebates to help reduce the purchase price. Look for a SEER rating of 14 or more—the higher, the better in terms of energy efficiency.
FAQs About Window AC Installation Cost
How much does it cost to install a window AC?
Installing a medium-sized window AC unit costs an average of $550, but this project can cost anywhere from $60–$1,200, depending on the unit’s size and whether you require professional installation.
Are window AC units hard to install?
Most window units can be installed easily using tools you’d find in a common home improvement store. Simply remove the unit from the box and use the included installation kit to secure it in an open window.
How long does it take to install a window air conditioner?
According to Home Depot, you can install a window air conditioner in less than two hours. It may take professionals even less time than that.
How much does it cost to run a window AC?
You can run a window AC unit for an average of $0.13 per hour, though the operating cost ranges from $0.06 to $0.19 per hour, depending on how powerful the unit is.
Is it cheaper to run a window AC or central AC?
It’s substantially cheaper to run a window AC unit than a central air conditioner, though the window unit will only cool the room it’s in.