How Much Does an AC Capacitor Cost?

Typical Range:

$100 - $380

Find out how much your project will cost.

Cost data is based on research by HomeAdvisor.

Updated September 14, 2022

Written by HomeAdvisor.

The average AC capacitor cost is around $170. Prices generally range between $100 and $250, including professional installation. Branded units are more expensive, costing upwards of $380. The price depends on the brand, model, voltage, and labor required for installation.

The HVAC capacitor's purpose is power storage. As the air conditioner runs, it collects and stockpiles energy that kick-starts the unit when it begins a new cycle. This function is essential because the AC requires more power than your home's electricity can provide as it starts up. Without the help of the capacitor, your home's HVAC system can't run properly.

Average Cost to Replace an AC Capacitor

Average Cost High Cost Low Cost
$170 $380 $100
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AC Capacitor Costs by Type

An AC capacitor typically costs between $5 and $75. Hiring a local AC installation company to handle installation usually costs between $75 and $200 on top of the actual air conditioner capacitor price.Most technicians will charge at least $100 as a minimum service fee. They will also mark up the cost of parts to make a profit.

Replacing an AC capacitor is a common AC repair cost homeowners should budget for. Luckily, it's relatively inexpensive. However, depending on the type of capacitor you need, prices will fluctuate. Some brand-name and higher-end models could be between $50 and $180. Final prices vary based on the unit model and voltage level.

This table further breaks down AC capacitor prices by type:

AC Capacitor Type AC Capacitor Average Price Range AC Capacitor Replacement Average Cost Range (Labor Included)
AC dual capacitor $15 – $45 $90 – $250
AC start capacitor $9 – $180 $84 – $380
Central air run capacitor $6 – $30 $81 – $230

AC Dual Capacitor Cost

Most dual-run capacitors cost between $15 and $45 as a stand-alone part, but prices vary depending on the brand and voltage. Dual capacitors can power two electric motors, making them ideal for larger HVAC systems. Fully installed, they could cost between $90 and $250.

Air Conditioner Start Capacitor Cost

Most AC start capacitors cost between $9 and $25 for the part alone. Higher-end models can cost as much as $180. These capacitors provide the jolt of power needed for the system to start a new cycle. Don’t forget to factor in HVAC contractor rates for a typical range of $84 to $380.

Central Air Run Capacitor Cost

A run capacitor generally costs between $6 and $30. Factoring in labor costs, budget to spend between $81 and $230. This capacitor helps provide power to keep the AC running for longer periods of time.

Other HVAC Capacitor Costs

While replacing an air conditioning capacitor is a common type of AC repair work, you may encounter other HVAC repair costs related to capacitors, including the blower capacitor and heat pump capacitor.

Blower Capacitor Replacement Cost

The price for a new blower capacitor is typically between $9 and $12 plus the cost of labor, which is another $75 to $200. A blower capacitor provides the necessary power to spin the blower motor so the fan moves in the furnace.

Heat Pump Capacitor Cost

The cost for a replacement heat pump capacitor generally ranges between $15 and $25, with labor adding another $75 to $200. The heat pump capacitor stores energy and releases it when it's time to run the compressor or motor. The main difference between a heat pump vs. air conditioner is that a heat pump works as both an AC and a heater. You can typically find heat pump pros who specialize in these systems.

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AC Capacitor Cost Factors

The AC price makes up a small portion of the overall cost to replace an AC capacitor. You’ll need to consider other AC capacitor cost factors, including local labor rates, the size of the AC, your location, and the season.


The labor required to replace a capacitor is generally between $75 and $200. The price depends on the level of experience and the time it takes to complete the job. These rates are similar to the cost of servicing an AC unit.

Most HVAC repair pros can replace a capacitor in under an hour. If labor costs and the price of the AC capacitor come in under $100, most companies will increase the fee to at least that to make the service call worth their time.

AC Type and Size

The type of capacitor required—run, start, and blower—can have a small impact on the overall cost. Size plays a more significant role. The larger your air conditioning system, the more power you'll need from a capacitor. Higher-end models that can provide more power tend to cost more. 


Where you live can impact your total AC capacitor replacement cost. In general, living in a hot climate where air conditioning is in higher demand means you’ll pay a premium for any kind of AC repair. Everything from the cost of fixing a window air conditioner to the price of replacing an evaporator coil will be more expensive.

Similarly, if you live in an area where using AC is less common, dedicated AC repair contractors may be harder to find. This can result in higher labor costs since contractors have less competition.

Finally, if you live in an area with a higher cost of living, you can expect to pay more for both labor and parts.


It typically costs more to replace an AC capacitor in the summer because air conditioning contractors are in higher demand when the weather is hot. The cost of any AC work will likely be higher in the summer, whether you're budgeting for routine maintenance, repair work, or a completely new installation.

DIY Capacitor Replacement vs. Hire a Pro

A common concern homeowners have about professional capacitor replacement is the relatively high labor cost compared to the low cost of the part itself. This can tempt any frugal DIY-er into trying to take on the task themselves. But due to the risks involved and the extra time and hassle, it's strongly recommended you find an HVAC contractor.

A Pro Saves Time Replacing a Capacitor

Most HVAC companies can send someone to your home that day, and the job usually takes under an hour. If you choose to DIY the project, it'll likely take you much longer to source the parts, learn the process, and carry out the needed steps.

A Pro Eliminates Risks

Working with AC parts—or any electrical components—can be extremely dangerous. A capacitor can shock you, leak toxic liquids, or even burst and cause serious injury. Hiring an HVAC contractor ensures the job is done safely and correctly.

A Pro Protects Your HVAC System

While trying to fix your HVAC system, you can damage it further. If you’re not experienced, you can end up paying extra costs for AC compressor replacement—or even the cost of installing a new central air unit.

A Pro Provides Accurate Diagnostics

When your AC isn’t working, it isn’t always immediately apparent what’s causing the issue. A pro can quickly diagnose your problem and often has the necessary parts on hand.

An HVAC contractor near you can help you pinpoint the root of the issue, provide a quote, and repair the capacitor for you.

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Frequently Asked Questions

How long do AC capacitors last?

An AC capacitor will generally last around 20 years under the right conditions. However, there are a few factors that can significantly reduce its life span:

  • Choosing too low of a voltage for the existing unit

  • Prolonged exposure to high heat and hot climates

  • Neglecting AC maintenance

  • Not servicing your AC regularly

  • Poor product design or faulty parts

To get the most out of your capacitor, keep the outdoor AC system in a clean and shaded area and follow our air conditioner maintenance guide. It’s also important to seek qualified AC services rather than trying to fix anything yourself.

What happens when an AC capacitor goes bad?

When your capacitor isn’t working, the necessary power can’t reach vital elements of your HVAC system, such as the fan, compressor, and blower. This can quickly cause your AC to stop cooling your home. Luckily, replacing your AC capacitor is usually a quick and simple fix—and it’s generally affordable.

How do I know if my AC capacitor is broken?

You know your AC capacitor is broken with these telltale signs:

  • Your AC isn’t blowing cold air.

  • You hear a clicking or humming sound.

  • Your AC takes a while to start after turning it on.

  • Your AC shuts off on its own.

  • You have higher than normal energy bills.