ROOFTOP UNIT (RTU) REPAIR & SERVICE

In Anne Arundel County

5-Star Service

Licensed & Insured

Same-Day Service Available

Locally Owned & Operated

When a rooftop unit goes down, so does your business's comfort and productivity. Lighthouse HVAC diagnoses and repairs commercial RTUs fast — minimizing downtime and keeping your property comfortable, so your operations never skip a beat.

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ROOFTOP UNIT (RTU) REPAIR & SERVICE

Common Commercial HVAC Problems We Solve

A struggling rooftop unit means uncomfortable customers, unproductive staff, and rising energy costs. Our technicians quickly diagnose and repair RTU issues, restoring reliable performance and keeping your business running smoothly.

No Heating or Cooling

Weak or Uneven Airflow

Rooftop Unit Won't Start

Rising Energy Costs

Short Cycling

Strange Noises or Odors

Refrigerant Issues

Frequent Breakdowns

Why Proper RTU Service Matters

Your rooftop unit keeps your entire business comfortable. Servicing it right protects your operations, your energy costs, and the comfort of everyone in your building.

Less Downtime

Lower Operating Costs

Reliable Comfort

Fewer Breakdowns

Complete RTU Diagnosis

Upfront Pricing Approval

Fast, Professional Repair

What To Expect During Your Service Visit

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

Prevent Costly Downtime Before It Happens

Unexpected rooftop unit failures disrupt your operations and hit your bottom line. A Lighthouse Commercial Preventative Maintenance Program keeps your RTUs inspected, serviced, and reliable — catching small issues before they shut your business down.

Still Have Questions? Let Us Help

How fast can you respond to a commercial RTU breakdown?

We understand that downtime costs your business money, so we prioritize fast commercial response. Our team works to diagnose and repair rooftop unit failures quickly, minimizing disruption to your operations and getting your building comfortable again as soon as possible.

What is a rooftop unit (RTU) and why do businesses use them?

A rooftop unit is a self-contained commercial HVAC system installed on the roof to save interior space. RTUs handle heating and cooling for offices, retail spaces, restaurants, and other commercial properties. Because they run hard year-round, they need experienced service to stay reliable.

Should I repair or replace my commercial rooftop unit?

It depends on the unit's age, condition, and repair history. Many RTU issues are worth repairing, especially on newer units. For older units with frequent failures, we'll give you an honest cost comparison so you can make the smartest decision for your business and budget.

Do you service all types and brands of rooftop units?

Our technicians are experienced across a wide range of commercial rooftop units and brands. We diagnose and repair the specific system your property relies on, so you get knowledgeable service rather than trial-and-error part replacement.

Serving Homeowners Throughout Anne Arundel County

Providing professional rooftop unit repair and service for offices, retail spaces, medical facilities, restaurants, and other commercial properties across Annapolis, Severna Park, Crofton, Odenton, Glen Burnie, and surrounding communities.

Rooftop Unit Down?

Don't let a rooftop unit failure disrupt your business. Request commercial service today for fast, professional RTU repair that gets your operations back to normal.