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


commercial HVAC unit on roof of building

Commercial / Industrial HVAC

Sales, service, installation and replacement of existing equipment, rooftop units, hydronic, systems, exhaust fans, energy recovery ventilation systems (ERV), heat recovery ventilation (HRV), ductless for server rooms and electric rooms, office areas, splits systems and ductless, make up air systems, tenant fit out of retail commercial spaces.

Maintenance Agreement available.

IAQ: UV lights, humidification and dehumidification, needle point air purification, air scrubber’s workplace, and office indoor air quality. That’s why we are here for you as your trusted HVACR COMPANY.

2 residential outdoor HVAC units

Residential Heating and Cooling

Sales, service, and installation of most brands, makes and models of heat pump, gas furnaces, boilers (gas + oil), hot and cold-water coil systems hydronic, geothermal, ductless, etc.

IAQ: Media filters – 4”-5” filters, UV lights, ionization air, purifiers, humidifiers, dehumidifiers, duct cleaning, and disinfecting.

Whether it is time to service your heating or cooling system or to upgrade to a more efficient system, we will go that extra mile for you. Call us today at 410-543-2962.

Maintenance Agreement available.

Mitsubishi Electric – Zoned Comfort Solutions®

Trane – Heat Pumps

Trane Air Conditioners

open door to commercial refrigerator

Commercial Refrigeration

Service and install most brands. Makes and models of commercial refrigeration equipment, including walk in coolers and freezers, reach in sandwich, kitchen prep tables, coolers and freezers, ice machines, kitchen exhaust fans, make up air systems. Reach in display coolers, restaurant mug chillers, reach in beer coolers.

Offer maintenance programs for kitchen refrigeration equipment, coil cleaning and controls, ice machine, exhaust fans, etc.

We are available 24 hours to keep your business running and inventory protected.

Rinnai tankless water heater mounted on wall

Tankless Water Heater

Combination boiler and single or multiple zones. The benefits of tankless are a smaller footprint and on demand hot water vs constantly heating water in a storage vessel. Energy efficient. Contact us now; your RINNAI PRO Dealer is always going the extra mile for more efficiency.

Rinnai Tankless Water Heating Solutions

Rinnai Demand Duo ™ Hybrid Commercial Water Heating Solutions

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.

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.

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.

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.

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!

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!

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.