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Service Areas


Service, repair, installation, replacement and ongoing maintenance — Warner Service can take care of all of your residential or commercial heating, cooling, and plumbing needs.

Whether you own a home or run a business in Frederick County or Hagerstown, Maryland; Southern Pennsylvania; Virginia; or West Virginia, we’re ready to leverage more than 80 years of HVAC and plumbing experience to assist you.

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Areas We Serve


  • Frederick
  • Hagerstown
  • Boonsboro
  • Brunswick
  • Emmitsburg
  • Ijamsville
  • Jefferson
  • Middletown
  • Mount Airy
  • NewMarket
  • Walkersville
  • Thurmont
  • Dickerson
  • Germantown
  • Gaithersburg
  • Barnesville
  • Clarksburg
  • Poolesville
  • Taneytown
  • Westminster
  • New Windsor
  • Eldersburg

West Virginia

  • Jefferson County
  • Harpers Ferry
  • Charles Town
  • Kearneysville
  • Sheperdstown


  • Carroll Valley
  • Fairfield
  • Gettysburg
  • Littlestown
  • Bonneauville


  • Leesburg
  • Lovettsville
  • Purcellville
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