GAS SYSTEM DIAGNOSTICS

In Anne Arundel County

5-Star Service

Licensed & Insured

Same-Day Service Available

Locally Owned & Operated

When it comes to gas, safety comes first. Lighthouse HVAC diagnoses gas heating systems with precision — pinpointing leaks, combustion issues, and performance problems, and giving you honest answers with no scare tactics, just the truth about your system.

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GAS SYSTEM DIAGNOSTICS

Common Heating Problems We Fix

Gas heating problems often show up as warning signs long before they become dangerous — uneven heat, strange smells, a pilot that won't stay lit. Our technicians diagnose the root cause safely and accurately, so you know exactly what's happening and what it takes to fix it.

Smell of Gas Near the Furnace

Furnace Won't Stay Lit

Yellow or Flickering Burner Flame

Uneven or Weak Heat

Frequent Pilot or Ignition Failure

Soot or Excess Condensation

Carbon Monoxide Concerns

Strange Smells When Heating

Why Accurate Diagnostics Matter

With a gas system, guesswork isn't an option. Proper diagnostics protect your family's safety, your comfort, and your equipment — and give you the honest answers you need to make the right decision.

Safer Home

Accurate Answers

Dependable Heat

No Scare Tactics

Complete Safety Inspection

Precise Gas & Combustion Testing

Clear, Honest Findings

Upfront Repair Recommendations

Safety & Comfort Restored

Our Process

What To Expect During Your Diagnostic 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 Gas Issues Before They Become Emergencies

Many gas and combustion problems develop quietly over time. The Lighthouse Annual Maintenance Plan includes thorough safety and combustion checks at every visit, catching issues early — protecting your family and your peace of mind, season after season.

Still Have Questions? Let Us Help

How do I know if I have a gas problem with my furnace?

Warning signs include the smell of gas near the furnace, a yellow or flickering burner flame (it should be blue), a furnace that won't stay lit, soot buildup, or strange smells when the heat runs. If you notice any of these — especially a gas smell — turn off the system and call for a professional diagnostic right away.

Is a gas furnace leak dangerous?

A gas leak or combustion problem can be serious, which is why accurate diagnostics matter. Faulty combustion can also produce carbon monoxide, a colorless, odorless gas. We test thoroughly and honestly so you know exactly what's happening — without unnecessary fear or pressure.

What causes carbon monoxide in a home heating system?

Carbon monoxide can result from a cracked heat exchanger, incomplete combustion, or poor ventilation. Our diagnostics check for these specific issues. We recommend every home with gas heating also have working carbon monoxide detectors as an extra layer of protection.

How much does gas system diagnostics cost?

A diagnostic visit carries a clear, upfront fee, and we explain exactly what's included before we begin. Once we identify the issue, you'll get transparent pricing for any repair — so you can decide with full information and no surprise charges.

Serving Homeowners Throughout Anne Arundel County

Providing professional gas system diagnostics across Annapolis, Severna Park, Crofton, Odenton, Glen Burnie, Arnold, Davidsonville, and surrounding communities.

Concerned About Your Gas System?

Don't ignore a warning sign or a lingering worry. Schedule your gas diagnostic today and get honest, accurate answers — and the peace of mind that your home is safe.