25600 Ocean Gtwy., Mardela Springs, MD 410-543-2962 Request a Quote
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Team AC character passing baton to Team HEAT character during race to finish line

Maintenance Agreement

HVAC maintenance is the periodic inspection of commercial or residential heating, ventilation, and air conditioning systems to prolong equipment life and prevent costly breakdowns. These maintenance inspections and cleanings are crucial in reducing the risk of higher cost repairs in the future.

How much will this service cost you?

The cost will be determined on how many systems and specialized filters you have. You can find the cost of residential services here.

Commercial Service contract prices will be determined with an on-site visit depending on the type of equipment you have.

Why Choose us?

It’s our duty to turn your HVAC problems around and make sure you are as comfortable as possible after our work is complete. Every member of our team values a customer-first based mindset. Whether it’s a service call or the installation of a new system, we’re confident that you will be thrilled with the experience from start to finish—with dedication, hard work, commitment, knowledge, and perseverance— we take pride in going the extra mile for you.

  • Trusted certified technicians
  • Provide 100% customer satisfaction
  • 24/7 availability/ Emergency repair
  • Transparent pricing
  • Preventative Maintenance Benefits
  • Professionalism
  • Team players
  • Exceptional service guarantee

Steps:

  • Download our Service Contract Template
  • Please print and fill in:
    • Name
    • Billing Address
    • Cell Phone
    • Email
    • Services Dates
    • System Type (s)
    • Sign and Date
  • Please use the form to upload your agreement to us.
  • Drop files here or
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    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!

    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.

    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.

    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.

    Robert Taylor

    5 stars.

    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.

    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.

    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.