How Much Does It Cost To Replace A Capacitor On An Ac Unit

5 min read Jun 26, 2024
How Much Does It Cost To Replace A Capacitor On An Ac Unit

How Much Does It Cost to Replace a Capacitor on an AC Unit?

<span style="color: #666666">Overview</span>

A faulty capacitor is a common issue that can cause your air conditioning (AC) unit to malfunction or break down completely. Replacing the capacitor is a relatively straightforward process, but the cost can vary depending on several factors. In this article, we'll break down the average cost of replacing a capacitor on an AC unit and what affects the final price.

What is a Capacitor in an AC Unit?

A capacitor is a crucial component in an AC unit that stores electrical energy and provides a power boost to the compressor and fan motors when they need it. Over time, capacitors can wear out or become damaged, leading to a range of problems, including:

  • Reduced airflow: Weak air flow from the vents
  • Increased energy bills: The AC unit works harder, consuming more energy
  • Unit breakdown: Complete failure of the AC unit

Cost of Replacing a Capacitor on an AC Unit

The cost of replacing a capacitor on an AC unit can range from $100 to $500, depending on the following factors:

Type of Capacitor

There are two main types of capacitors: run capacitors and start capacitors. Run capacitors are more common and usually less expensive, with prices ranging from $50 to $200. Start capacitors, on the other hand, are more complex and can cost between $100 to $300.

Brand and Quality

The brand and quality of the replacement capacitor also affect the cost. Generic or aftermarket capacitors are often cheaper, while OEM (Original Equipment Manufacturer) capacitors from recognized brands like Carrier, Trane, or Lennox can be more expensive.

Labor Costs

If you hire a professional to replace the capacitor, labor costs will add to the overall expense. Labor rates vary depending on your location, the Technician's expertise, and the complexity of the job. Expect to pay between $50 to $200 for labor, depending on the severity of the issue.

Additional Repairs

In some cases, replacing the capacitor may uncover other underlying issues, such as:

  • Worn or damaged compressor or fan motors
  • Refrigerant leaks
  • Electrical connections or wiring problems

These additional repairs can increase the overall cost of the replacement process.

DIY vs. Professional Replacement

While it's possible to replace the capacitor yourself, hiring a professional is recommended to ensure a safe and proper installation. A licensed technician can:

  • Identify underlying issues
  • Provide a warranty or guarantee
  • Ensure compliance with local building codes and regulations


Replacing a capacitor on an AC unit can be a cost-effective solution to ensuring your air conditioning system runs efficiently and effectively. While the cost can vary, on average, you can expect to pay between $100 to $500 for a replacement capacitor, depending on the type of capacitor, brand, quality, and labor costs. Remember to consider hiring a professional for a safe and proper installation.

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