FLAME SENSOR & IGNITION REPAIRS

In Anne Arundel County

5-Star Service

Licensed & Insured

Same-Day Service Available

Locally Owned & Operated

When your furnace starts up and then shuts right back down, a faulty flame sensor or igniter is often the culprit. Lighthouse HVAC diagnoses and repairs these common ignition problems fast — restoring reliable heat without pushing you toward repairs you don't need.

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FLAME SENSOR & IGNITION REPAIRS

Common Heating Problems We Fix

A furnace that lights and then quickly shuts off, won't ignite at all, or cycles on and off is usually dealing with a flame sensor or ignition issue. Our technicians pinpoint the exact cause and make the right repair — quickly and honestly.

Furnace Starts Then Shuts Off

Furnace Won't Ignite

Short Cycling

Dirty Flame Sensor

Cracked or Failed Igniter

Clicking Without Ignition

No Heat on Startup

Intermittent Heating

Why the Right Repair Matters

A small ignition part shouldn't cost you a whole furnace. Diagnosing the real problem and fixing exactly what's needed protects your comfort, your budget, and your trust.

Reliable Ignition

Dependable Winter Heat

Honest, Affordable Fix

No Unnecessary Replacements

Complete Ignition Diagnosis

Clear Diagnosis & Recommendations

Upfront Pricing Approval

Professional Repair & Testing

Heat 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

Stop Ignition Problems Before They Start

A dirty flame sensor is one of the most common — and most preventable — winter breakdowns. The Lighthouse Annual Maintenance Plan cleans and tests your ignition system at every visit, so your furnace lights reliably when you need it most, season after season.

Still Have Questions? Let Us Help

Why does my furnace turn on and then shut off?

This common problem — called short cycling — is often caused by a dirty flame sensor. The sensor can't confirm the flame, so the furnace shuts down as a safety measure. Cleaning or replacing the sensor usually restores normal operation quickly and affordably.

What is a flame sensor and why does it fail?

The flame sensor confirms that your burners have actually lit. Over time it collects a thin layer of residue that stops it from detecting the flame, causing the furnace to shut off. It's an inexpensive part, and cleaning or replacing it is one of the most common furnace repairs.

Why won't my furnace ignite at all?

If your furnace clicks but won't light, the igniter may be cracked or failed. Modern furnaces use a hot-surface or electronic igniter that wears out over time. We test the full ignition sequence to confirm whether the igniter, sensor, or another component is the cause.

Is a flame sensor or igniter repair expensive?

These are usually among the most affordable furnace repairs — the parts are inexpensive and the fix is quick. Be cautious of anyone using an ignition problem to push a full furnace replacement. We diagnose honestly and fix exactly what's needed.

Serving Homeowners Throughout Anne Arundel County

Providing professional flame sensor and ignition repairs across Annapolis, Severna Park, Crofton, Odenton, Glen Burnie, Arnold, Davidsonville, and surrounding communities.

Furnace Won't Stay Lit?

Don't spend a cold night without heat. Schedule your ignition repair today and get a fast, honest fix that gets your furnace lighting reliably again.