Generators Contractors in Frederick, Maryland

Standby and portable generator installation and service..

Frederick is a fast-growing western Maryland city with strong roofing and remodeling contractor demand.

Whole-home standby generators automatically provide backup power during outages, protecting against food spoilage, frozen pipes, sump pump failure, and loss of medical equipment. Natural gas or propane-fueled standby generators (typically 12–24 kW for residential use) start within seconds of a power outage via an automatic transfer switch. Installation involves an electrical subpanel or whole-house transfer switch, a concrete pad, gas line connection, and compliance with setback and noise ordinances. Portable generators serve as a lower-cost option for partial backup but require manual setup and fuel management.

35

Listed contractors

$5k–$18k

Typical cost

What to look for when hiring a generators contractor

  • Ask the installer to perform a load calculation to properly size the generator for your home.
  • Confirm the estimate includes the transfer switch, concrete pad, gas line, and all permits.
  • Ask about warranty terms — most major brands offer 5-year limited warranties.
  • Verify the installer is authorized by the generator manufacturer (Generac, Kohler, Briggs & Stratton).

Generators contractors in Frederick(35 listed)

ALDRIC A SANTOS
TRADESMAN TRAD JELE · FREDERICK · MD
ALL AMERICAN PROPANE
CONSTRUCTION CONTRACTOR · FREDERICK · MD
BNC HOMES OF VIRGINIA LLC
CLASS A CONTRACTOR A RBC · FREDERICK · MD
CARLOS E COLLIA
TRADESMAN TRAD MPLB MHVA MGFC · FREDERICK · MD
CARROLL L MATTHEWS JR
TRADESMAN TRAD MPLB MHVA MGFC · FREDERICK · MD
CHARLES E SMITH
TRADESMAN TRAD MHVA · FREDERICK · MD
COMO OIL & PROPANE
Mechanical Contractor Bond - Mechanical Contractor Bond · FREDERICK · MD
CONNELLY AND ASSOCIATES INC
CLASS A CONTRACTOR A WWP EMW · FREDERICK · MD
CONSTRUCTION TRADES SERVICES INC
CLASS A CONTRACTOR A H/H · FREDERICK · MD
CONTOUR CONSTRUCTION LLC
CLASS A CONTRACTOR A RBC CBC HIC · FREDERICK · MD
COOPER BUILDING SERVICES LLC
CLASS A CONTRACTOR A CIC EMC · FREDERICK · MD
COPPERMINE APPLICATORS INC
CLASS A CONTRACTOR A CIC · FREDERICK · MD
DILLON LIGHTNING PROTECTION SYSTEMS INC
CLASS A CONTRACTOR A CIC RBC · FREDERICK · MD
ECO COMMERICAL CONSTRUCTION LLC
CLASS A CONTRACTOR A CBC · FREDERICK · MD
ERIC E SMOCK
TRADESMAN TRAD MPLB MGFC · FREDERICK · MD
HOME ENERGY SAVING SOLUTIONS LLC
CLASS C CONTRACTOR C HIC · FREDERICK · MD
JOHN K DELBORRELL
TRADESMAN TRAD MGFC MPLB · FREDERICK · MD
JULIUS G KIGONDU
TRADESMAN TRAD JELE · FREDERICK · MD
KENDALL J TYUS SR
TRADESMAN TRAD JELE · FREDERICK · MD
MARK V HOOPER
TRADESMAN TRAD JELE · FREDERICK · MD
MATTHEW M WARNER
TRADESMAN TRAD MHVA · FREDERICK · MD
MD CONTRACTING INC
CLASS A CONTRACTOR A CIC · FREDERICK · MD
NEVILLE ROBINSON
TRADESMAN TRAD JELE · FREDERICK · MD
PATAPSCO VALLEY CONTRACTORS LLC
CLASS A CONTRACTOR A CBC · FREDERICK · MD
View all 35 generators contractors in Maryland

How much does generators cost in Frederick?

$5,000 – $18,000Full cost guide →per system (typical)

Portable generator: $500–$2,000. Standby 12 kW: $5,000–$8,000 installed. Standby 22 kW: $8,000–$15,000 installed. Transfer switch adds $500–$1,500 if not included.

Generators contractors in Frederick — FAQ

How many generators contractors are in Frederick?

EdgeLocal lists 35 licensed generators contractors in Frederick, Maryland. All listings are sourced from state licensing registries.

What is the average rating for generators contractors in Frederick?

Generators contractors in Frederick are listed on EdgeLocal with ratings sourced from Google Business profiles. Use the directory to compare rated contractors near you.

Do generators contractors in Frederick need to be licensed?

Yes. Maryland requires generators contractors to hold a valid state license. Always verify a contractor's license is current and in good standing before signing any contract or allowing work to begin.

How do I find a reliable generators contractor in Frederick?

Start by verifying the contractor holds a valid Maryland license. Check their Google rating and read reviews. Get at least three written estimates. Confirm they carry general liability and workers' compensation insurance. Ask for references from recent Frederick jobs.

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