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Commercial – Industrial HVAC,
Residential HVAC, & Commercial Refrigeration

Team AC character passing baton to Team HEAT character during race to finish line

Keeping HVAC systems running on the
Eastern Shore for over 25 years

“Marathon” Service

For over 29 years we have served the people and businesses on the Eastern Shore of Maryland, Delaware, Virginia and surrounding areas. Marathon Service Company provides services including residential, commercial-industrial HVAC, commercial refrigeration and more. Every job is viewed as a unique “race for the win” in which our team aims to complete your service in a timely, efficient and high-quality manner. By implementing our “Marathon” work ethic, we apply dedication, commitment, knowledge, hard work and perseverance to keep you in 1st Place!

We service and install most makes and models of HVAC and commercial refrigeration equipment – custom applications being one of our specialties. We offer preventative maintenance service agreements along with a full range of indoor air quality products, including high-efficiency filtration and ultra-violet air sanitizing equipment. Our commercial refrigeration services provide you with peace of mind when equipment that is putting your inventory at risk needs service or replacement. We offer an extensive line of equipment and 24-hour emergency service. Take a look around our website for more detailed information on how we can provide you with “Marathon” service!

Service Area

Proudly serving for over 29 years

For over 29 years we have proudly served residents and businesses alike, stretching the Delmarva Peninsula in Maryland, Delaware and Virginia. Contact us today!

Ron and Barbara Jonson

The service your company provided was great. The heating system is working fine, the service your company provided was great. A special thanks to your crew that installed the duct work and furnace. I would certainly recommend Marathon Services to everyone. Thanks again.

Robert Taylor

5 stars.

Chris Wall, Harborside Bar & Grill

They are always there when we need them! Marathon Service Company has been our refrigeration service techs for 15 years now. They are always there when we need them. They keep everything running the way it should be and the beer is always ice cold!

Jerry Waldron

Marathon recently installed a residential heat pump for us. They provided model options and very competitive pricing. They beat two large local competitors by about 10%. They showed up on time and did a thorough job in messy weather conditions. Thanks guys.

Nonya B.

Never a complaint in the 5 years I did business with Marathon Service. They replaced an old unit and the entire process was seamless. Their price was more than fair and the quality of work was priceless. Everyone I dealt with at Marathon was respectful and true professionals. I recommend them for any of your HVAC needs.

David Edwards

Marathon Service is a very reliable and efficient company. They have been to my residence several times to work on my HVAC units, and I have been pleased. Not only are the technicians professional, but the office staff is as well. I highly recommend this company to meet all of your HVAC needs.

Susan Williams

Very Professional, Excellent Customer Service, Dependable and they have done AWESOME work for us! Strongly recommend them! They stand behind their product and the service they provide! Thank you for Doing All You Do!

Kitty Barnes

I highly recommend Marathon. I used them for the past 10 years and they were always quick to respond to issues. Eventually they replaced my old HVAC, which was done professionally. Their team members were courteous and knowledgeable. Thank you, Marathon Team.

Joyce Blevins

Marathon has been great. We have used their service for several years. They are usually able to come as soon as you call if a problem develops. This has been very helpful on the hot summer days. They are very knowledgeable. Their prices are reasonable. I don't feel that I have been overcharged. They explain the billing process very thoroughly so there have been no surprises. I highly recommend this company if you are having heating/cooling issues.