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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, Maryland, Hagerstown, Maryland, Southern Pennsylvania or West Virginia, we’re ready to leverage more than 80 years of HVAC and plumbing experience to assist you.

Schedule A Service Appointment

Our Location:

217 Monroe Ave.
Frederick, MD 21701

Areas We Serve


  • Frederick, Maryland
  • Hagerstown, Maryland
  • Boonsboro, Maryland
  • Brunswick, Maryland
  • Emmitsburg, Maryland
  • Ijamsville, Maryland
  • Jefferson, Maryland
  • Middletown, Maryland
  • Mount Airy, Maryland
  • New Market, Maryland
  • Walkersville, Maryland
  • Thurmont, Maryland
  • Dickerson, Maryland
  • Germantown, Maryland
  • Gaithersburg, Maryland
  • Barnesville, Maryland
  • Clarksburg, Maryland
  • Poolesville, Maryland
  • Tawneytown, Maryland
  • Westminster, Maryland
  • New Windsor, Maryland
  • Eldersburg, Maryland

West Virginia

  • Jefferson County, West Virginia
  • Harpers Ferry, West Virginia
  • Charles Town, West Virginia
  • Kearneysville, West Virginia
  • Shepherdstown, West Virginia


  • Carroll Valley, Pennsylvania
  • Fairfield, Pennsylvania
  • Gettysburg, Pennsylvania
  • Littlestown, Pennsylvania
  • Bonneauville, Pennsylvania


  • Leesburg, Virginia
  • Lovettsville, Virginia
  • Purcellville, Virginia
Serving Maryland, Virginia, Pennsylvania and West Virginia's HVAC and Plumbing Needs for 80 Years and Counting
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