How Much Does an AC Capacitor Replacement Cost in 2025?
AC capacitor replacement costs an average of $180
Replacing an AC capacitor costs between $200 and $400, or $180 on average, restoring your air conditioner's efficiency.
Costs vary based on factors like the capacitor type, labor fees, unit location, and season.
Timely replacement of your AC capacitor prevents further damage, saving you from more costly repairs down the line.
Hiring a professional ensures safe installation and prolongs your AC system's lifespan.
This article was updated using automation technology and thoroughly reviewed for accuracy by HomeAdvisor Editor Ryan Noonan.
Replacing a faulty AC capacitor costs an average of $180, with most homeowners spending between $200 and $400. A functioning capacitor restores your air conditioner's efficiency. Factors like capacitor type, labor rates, unit location, and season can affect the overall cost.
Since capacitors usually need replacement every five to 15 years, it's wise to budget for this task. Hiring a professional ensures safe installation and helps prevent further damage to your system.
AC Capacitor Replacement Cost Factors
The cost to replace an AC capacitor depends on several factors, including the size of your system, labor rates, unit location, and the season.
Size
Capacitors vary in size, measured in microfarads (μF) and volts, to match different AC unit sizes. Larger air conditioning systems require larger capacitors to handle a stronger current. Most capacitors range from 1 μF to 60 μFand have voltage ratings between 250V and 440V. As the capacitor's size increases, so does its cost.
Labor
Labor is the most significant cost when replacing an AC capacitor. HVAC technicians charge between $200 and $400 for labor alone. This fee covers inspecting your unit, removing the faulty capacitor, and installing and testing the new one. Many pros offer an all-inclusive rate between $300 and $600, which includes the capacitor's cost.
Location
The location of your air conditioner affects the capacitor replacement cost. If your AC unit is hard to reach or obstructed, contractors may charge more due to the extra time needed to access and service the unit.
Season
Demand for HVAC technicians peaks during the hottest months when air conditioners are used heavily. If you replace your capacitor during this busy season, you may face higher rates or emergency fees. Scheduling the replacement during cooler months can help you avoid these additional costs.
Repairs
If your AC capacitor fails, it can cause your system to break down or short circuit, requiring additional repairs. Depending on the severity of the issue, the average cost of AC repairs ranges from $200 to $600. Common repairs related to a failed HVAC capacitor include a damaged compressor, fan coil replacement, burnt-out motor, and condenser replacement.
| Repair Type | Average Cost |
|---|---|
| Damaged compressor | $750–$2,000 |
| Fan coil replacement | $600–$2,000 |
| Burnt-out motor | $200–$700 |
| Condenser replacement | $1,050–$5,000 |
| Thermostat replacement | $150–$350 |
Catch AC issues quickly to prevent the damage from progressing to other parts of the system. If you notice signs of malfunction, contact a local HVAC technician promptly to keep your HVAC repair costs down.
Maintenance
Scheduling annual air conditioner maintenance extends the lifespan of your system and ensures everything is working correctly. The cost of HVAC maintenance ranges from $75 to $200 per visit. During this appointment, a technician thoroughly inspects, cleans, and tunes up your AC unit. If they discover the need for repair, the total cost may increase.
AC Capacitor Replacement Cost by Type
AC systems can contain several types of capacitors. The average cost of the capacitor alone ranges from $8 to $45, depending on the type. Run, start, and blower capacitors are often the least expensive, while dual-run capacitors are on the upper end due to their complex design and role in the system. These capacitors also vary in price depending on your chosen brand, with high-end options costing $60 to $140 more.
| Capacitor Type | Average Cost Range |
|---|---|
| Start | $9–$25 |
| Run | $8–$30 |
| Blower | $9–$12 |
| Dual-run | $15–$45 |
Start Capacitors
Start capacitors cost between $9 and $25. They provide the initial jolt of energy needed to start the motor. After the unit turns on, the start capacitor turns off, letting the run capacitor take over.
Run Capacitors
Run capacitors cost between $8 and $30 for parts alone. They work with a start capacitor to ensure the blower motor, condenser fan motor, and compressor continue to work after the air conditioner is turned on. If both the run and start capacitors are faulty, you can expect to pay between $17 and $55.
Blower Capacitors
Your air conditioner relies on the blower motor to circulate air throughout your home’s duct system. If the blower motor capacitor fails, you'll pay between $9 and $12 for replacement. These capacitors tend to fail more frequently because your heating system relies on them, resulting in year-round use.
Dual-Run Capacitors
Some AC systems have a single dual-run capacitor rather than separate start and run capacitors. Due to their complexity and increased power supply, these devices are often the most expensive capacitors to replace, ranging between $15 and $45.
Budgeting for an AC Capacitor Replacement
Here are some tips to help you save on AC capacitor replacement costs:
Schedule the replacement during the off-season to avoid higher rates.
Keep the area around your air conditioner clear to make it easily accessible.
Stay current with annual maintenance to extend your capacitor's life.
Get quotes from multiple local contractors to find a competitive price.
DIY vs. Hiring an AC Installation Professional
HVAC repairs are best left to the professionals due to the complexity of the system and the electrical components involved. Professional installation may also be required for your new capacitor’s warranty to remain valid, so be sure to double-check the policy before performing DIY repairs. For the best results and expert installation, hire an AC installation professional to replace your AC capacitor for you.
How HomeAdvisor Gets Its Cost Data
No place is more important than your home, which is why HomeAdvisor connects homeowners with local pros to transform their houses into homes they love. To help homeowners prepare for their next project, HomeAdvisor provides readers with accurate cost data and follows strict editorial guidelines. After a project is complete, we survey real customers about the costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
Frequently Asked Questions
An AC capacitor provides the electrical energy needed to start and run your air conditioner's motors. It stores and releases electricity to keep the compressor and fans running smoothly. Without a functioning capacitor, your AC unit may not start or operate efficiently. If you notice problems with your AC unit, contact a professional to diagnose the problem and see if you need to replace your AC capacitor.
AC capacitors last between five and 15 years, with an average lifespan of ten years. Environmental conditions and system usage can affect their lifespan. Regular maintenance can help extend the life of your capacitor. When your replacement capacitor is installed, be sure to ask your AC technician about best practices for maintenance and ongoing service to keep your unit in good condition for as long as possible.
While you might save between $60 and $200 by replacing the capacitor yourself, it's not recommended unless you have electrical expertise and proper safety equipment. Replacing a capacitor involves risks like electric shock and potential damage to your AC unit. It's safer to hire a certified HVAC technician who ensures safe and accurate installation.
It's safest to have a qualified technician inspect your AC capacitor. If you decide to look at it yourself after turning off all power, you can carefully remove the front panel and check the capacitor for any visible issues. However, handling electrical components carries risks, so professional inspection is recommended.
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