CAPACITOR REPLACEMENT

In Anne Arundel County

5-Star Service

Licensed & Insured

Same-Day Service Available

Locally Owned & Operated

A failing capacitor is one of the most common reasons your system won't start or keeps shutting down. Lighthouse HVAC tests and replaces worn capacitors fast — restoring reliable operation before a small, inexpensive part leaves you without heating or cooling.

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CAPACITOR REPLACEMENT

Common Electrical Problems We Fix

A failing capacitor often shows clear warning signs before your system quits entirely — humming, hard starts, or shutting off mid-cycle. Our technicians test and replace it quickly, so a small part doesn't turn into a bigger, more expensive failure.

System Won't Start

Humming But Not Starting

Unit Shuts Off Mid-Cycle

Hard Starting

Weak or No Cooling

Clicking Sounds

AC Fan Won't Spin

Why the Right Repair Matters

A small part shouldn't cost you a whole system. Testing and replacing your capacitor correctly protects your comfort, your budget, and the components it powers.

Reliable Startup

Fast, Affordable Fix

Protects Other Components

Restored Comfort

Complete Electrical Diagnosis

Clear Diagnosis & Recommendations

Upfront Pricing Approval

Professional Replacement & Testing

Comfort Restored

Our Process

What To Expect During Your Repair Visit

Why Homeowners Choose Lighthouse

Experienced Technicians

Highly trained HVAC professionals.

Honest Recommendations

Solutions based on your needs.

Fast Response Times

Prompt scheduling and service.

Long-Term Reliability

Repairs focused on lasting performance.

What Homeowners Are Saying

See why local homeowners trust Lighthouse HVAC for repairs, maintenance, and indoor comfort solutions.

      EXCELLENT  
   Based on 107 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Kevin Brennan 
 
 
 
 Trustindex verifies that the original source of the review is Google. The tech who came out to clear drip line from ac unit was great and very efficient. Would use their service again if needed.  3 text messages for this survey in a week seems a little heavy. Doing this to stop the text messages.
  
 
      Posted on Google  
   
   Kenneth Turner 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent service. Great local company
  
 
      Posted on Google  
   
   Natalie Vowell 
 
 
 
 Trustindex verifies that the original source of the review is Google. Amazing work!!! Not only did the fit me in very quickly with same day service, but tech was able to fix my boiler instead of saying immediately (like other companies had) that I needed a new boiler saving me thousands!!
  
 
      Posted on Google  
   
   Mike Phelan 
 
 
 
 Trustindex verifies that the original source of the review is Google. My old heat pump went out in the middle of the summer heat.  Lighhouse came out right away and had me set up with a new heat pump within days.  Ronnie was great.
  
 
      Posted on Google  
   
   Jennifer Karns 
 
 
 
 Trustindex verifies that the original source of the review is Google. What a great company this is. I called at 3:00 on a Friday afternoon and they had a tech in my area who was there at 6. He quickly diagnosed the problem and got us up and running again. Very friendly and professional all around. I highly recommend and will definitely use them in the future.
  
 
      Posted on Google  
   
   James Brown 
 
 
 
 Trustindex verifies that the original source of the review is Google. Worked non stop until it was done and were great to work with. Definitely this is the company to use.
  
 
      Posted on Google  
   
   C Jay 
 
 
 
 Trustindex verifies that the original source of the review is Google. Quick and friendly service! Thanks Lighthouse HVAC!
  
 
      Posted on Google  
   
   Connor Rickard 
 
 
 
 Trustindex verifies that the original source of the review is Google. I HIGHLY recommend this company!  We were desperate, and they came to the rescue after hours so that my kids would be able to sleep in a cool house!  I will use them for my business as well.
  
 
  
  
 
    Verified by Trustindex  Trustindex verified that these reviews were published on Lighthouse HVAC LLC's Google Business Profile. Learn more

Catch Electrical Failures Before They Happen

Capacitors and other electrical parts wear out gradually and often give warning signs before they fail. The Lighthouse Annual Maintenance Plan includes electrical testing at every visit, so worn components get caught and replaced before they leave you without comfort — season after season.

Still Have Questions? Let Us Help

What are the signs of a bad AC capacitor?

Common signs include a system that hums but won't start, hard starting, shutting off mid-cycle, weak cooling, clicking sounds, or a fan that won't spin. A failing capacitor is one of the most frequent HVAC breakdowns — and often an easy, affordable fix when caught in time.

What does a capacitor do in my HVAC system?

The capacitor stores and delivers the jolt of energy your system's motors need to start and keep running. When it weakens or fails, motors struggle to start or stop working altogether — which is why a small capacitor can bring your whole system to a halt.

How much does it cost to replace a capacitor?

Capacitor replacement is usually one of the most affordable HVAC repairs — the part itself is inexpensive and the fix is quick. Be cautious of anyone using a failed capacitor to push a full system replacement. We diagnose honestly and charge fairly for exactly what's needed.

Can I replace an HVAC capacitor myself?

We don't recommend it. Capacitors store an electrical charge even when the power is off and can cause serious shock if handled improperly. A professional replacement is quick, safe, and includes testing the related components to make sure nothing else is failing.

Serving Homeowners Throughout Anne Arundel County

Providing professional capacitor replacement across Annapolis, Severna Park, Crofton, Odenton, Glen Burnie, Arnold, Davidsonville, and surrounding communities.

System Won't Start?

Don't sweat through a breakdown waiting on a simple part. Schedule your capacitor repair today and get a fast, honest fix that gets your system running again.