Reasonably Priced, Highly Rated, and Just Around the Corner!

Heating & Air Conditioning Repair, Service & Installation in Carroll County.

Proudly Serving Carroll, Frederick, & Howard County, Maryland.

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Your Trusted Residential & Commercial HVAC Repair Experts in Carroll, Frederick, & Howard Counties

Exxel Mechanical Services is the HVAC company that homeowners and businesses across Carroll, Frederick, and Howard Counties trust for year-round comfort. From installation and maintenance to repair, we cover all your HVAC needs.

At Exxel, building strong relationships with our community is at the heart of what we do. Expect nothing less than exceptional service and quality craftsmanship every time you choose us.

HVAC Repair

Furnace or AC not working right? We repair heating and cooling systems of every make and model across Carroll, Frederick, and Howard County. Fast, same-day service so you are not left waiting.

HVAC Installation

Ready for a new system? We install and replace furnaces, heat pumps, and air conditioners sized right for your home and budget, with free estimates on new installs.

Emergency HVAC Repair

No heat or no cooling and cannot wait? We prioritize urgent repairs with fast, same-day service across Carroll, Frederick, and Howard County. Call now, and we will get a technician to you as soon as possible.

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Service Area

We’re Always Right Around The Corner

We stay close to home and proudly
service the following counties in Maryland:

Carroll County

Frederick County

Howard County

Why Choose Exxel?

Your Reliable Heating &
Air Conditioning Contractor

Great Customer Service

As a small business, your satisfaction is very important to us! We believe that the best service means offering expert advice, top-quality products, and friendly, honest communication – and that’s just what you’ll get with Exxel!

Commitment to Quality

Our technicians take pride in their work. We use only high-quality products and materials we’d want in our own homes, and we stand behind our craftsmanship all the way.

Fully Licensed & Insured

Our highly trained technicians have plenty of hands-on experience providing HVAC across Carroll, Frederick & Howard County. Their expertise means that you can expect meticulous installations, efficient repairs, and reliable maintenance for your heating and cooling needs.

24-Hour Emergency HVAC Services

We’re dedicated to responding quickly to your calls, addressing your concerns, and providing timely solutions to restore comfort to your home or business.

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Don't Take Our Word For It

    
 
 
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   Paul Jones II 
 
 
 
  I called Exxel and asked them to look at my HVAC and give me a quote for a higher-capacity system.  After checking the existing system and making sure that it was running fine, they advised me that I didn't need a new system installed and should run this one until it fails.  They explained the range of options, but said that I really didn't need to spend that money.  I was very impressed with their expertise and with their honesty.  Exxel has my strongest recommendation.  Good people; give them a call.
  
 
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   Dani Nordan 
 
 
 
  EXXEL is awesome! We had a 45 year OLD HVAC unit that EXXEL was able to do a simple tune up on shortly after we bought our house to get a few extra years out of it. This summer it finally bit the dust and we had EXXEL back out to replace it. We called them to check it out as it was leaking and they were able to come out same day to diagnose the problem. Once confirmed it was time to replace, we were on their books within a few days to have the work done. Bob was professional, punctual, honest, and informative. These guys are great! If you’re in the market for honest and fair HVAC services, these are your guys! We cannot recommend them enough :)
  
 
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   Kelsey Francik 
 
 
 
  Our upstairs AC unit went out the day we moved in. On top of moving stress, we now had to worry about getting someone in to fix/replace our unit at a reasonable price and quickly. Bob was recommended to us and I would extend that recommendation to others a thousand times over. He was able to come quickly, assess what needed to be done, and came back within a week to install a new unit. He and his partner Eric put it in in a couple of hours and I hardly knew they were here. Super professional, reasonable pricing, and great with noisy dogs :) our second unit is 20+ years old and will undoubtedly be going out soon and Bob will be the first person we call!
  
 
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   ccp1657 
 
 
 
  Expert mechanics, take great care to minimize disruption, clean up well.  Very satisfied, world definitely recommend!
  
 
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   Dave Manion 
 
 
 
  On time - knowledgeable- fair & honest.  Highly recommend
  
 
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   Brian 
 
 
 
  Very happy with there work , first for a furnace tune up followed by a heat pump install, there work was professional and there price was the best I had received after four estimate. Highly recommend!
  
 
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   william isenberg 
 
 
 
  prompt quality service
  
 
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   Jessica Biddinger 
 
 
 
  Bob and his team are professional, courteous, respectful of our property, on time, and clearly knowledgeable. We have an older home with older systems that he maintains and we will plan to use his services when these systems need to be replaced; that said, we appreciate him keeping them running as best as they can until then.