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SERVICES.Heating

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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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.

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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.

Higher Utility Bills

Reduced Cooling Performance

Unexpected System Failure

Shortened Equipment Lifespan

01

Complete Ignition Diagnosis

02

Clear Diagnosis & Recommendations

03

Upfront Pricing Approval

04

Professional Repair & Testing

05

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.

“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.”

-- Jennifer Karns

“Our furnace stopped working during one of the coldest nights of the year. Lighthouse HVAC arrived quickly, explained everything clearly, and had us warm again the same day.”

-- Sarah Ms

“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.”

-- Connor Rickard

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.

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Still HaveQuestions? 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.

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.

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.

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.

While some homeowners attempt it, working inside a gas furnace carries real safety risks. A professional cleaning also includes testing the full ignition system to make sure nothing else is failing — so you get a lasting fix and confirmed safe operation, not just a temporary patch.

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.

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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.

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