Top-rated generator install pros.

Get matched with top generator install pros in Frederick, MD

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Frederick, MD?

Select your specific project to find the pro for you.

TRUSTED BY FREDERICK, MD HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon17
    Verified generator installs reviews

Find Generator install pros in Frederick

Avatar for SciFiHomes Inc
SciFiHomes Inc
5.0(
27
)

Serving Frederick, MD and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"The guys arrived exactly at the prearranged time. They informed me that the work would take longer than the '2 man hours' that I bought through the Angie's List Deals before they began the job - which I appreciated.  They were on task and professional the whole time. They explained any problems they encountered while re-installing the old light fixture - need new bulbs.  They cleaned up any mess they made at the end of the job. Rates and cost of supplies were reasonable.  I WILL BE CALLING THEM BACK FOR ANY OTHER ELECTRICAL WORK IN THE FUTURE.
"
Cummins Onan 400A ATS
Cummins Onan 20kW
Briggs & STratton Standby Generator
Response time9 hrs
6 neighbors recently requested a quote
Recommended by100%of homeowners
Long Electric, LLC
4.9(
167
)

Serving Frederick, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Customers say: Quality work

"My experience is getting a new whole house generator installed by Long Electric was wonderful. They were responsive, timely and very professional. Everyone I dealt with was very courteous and answered all my questions over and over. I highly recommend their services."
Response time2 days
9 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Nasr Electric Inc
Nasr Electric Inc
4.9(
276
)

Serving Frederick, MD and surrounding areas

Approved

In business since 2003

Free estimates

Warranties offered

"Nasr is wonderful! His guys did a great job with the panel which was old and as it turned out, replaced just in the nick of time as there were melted parts inside that could have started a fire! The wrong surge protector was installed so Nasr came back to put in the correct one. He is very friendly, communicative and easy to work with and does high quality work. I'm very happy with my new electrical panel."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+19

Response time5 days
Response rate100%
1 neighbors recently requested a quote
Avatar for Greenleaf Electric, LLC
Greenleaf Electric, LLC
5.0(
116
)

Serving Frederick, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Customers say: True professional

"Greenleaf Electric: very professional, assessed needs quickly. Installation of a ChargePoint home EV done after the local inspector required electrical upgrades for the main panel, changes to insure the house was up to code, including placement of a new mast. Other improvements done to bring my 1965 era home up to date. Greenleaf Electric is exceptional. Very pleased with the staff brought in to assist, the two inspectors from Frederick County, also Potomac Edison - all were professional. Also replaced security lights, installed Ring doorbell and cameras, installed new Carriage lights for the garage and front door. Just awesome! Thank you!"
Under Cabinet Lighting
Kitchen
Response time1 day
Response rate88%
9 neighbors recently requested a quote
Avatar for GAC Services
GAC Services
4.8(
291
)

Serving Frederick, MD and surrounding areas

Approved (Corporate)

In business since 1970

Free estimates

Warranties offered

"Could not have asked for better service. The recommended product is working great, the installers were professional and so far the service technicians are top notch."
Additional Photos
66 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Clinton Electric Co Inc
Clinton Electric Co Inc
4.6(
172
)

Serving Frederick, MD and surrounding areas

Approved

In business since 1969

Emergency services offered

Warranties offered

"Great. Very easy to deal with. Professional. They answered right away, scheduled, emailed me the forms. Set up a quick appointment. Everything went very well. I will be using them moving forward for my periodic generator maintenance."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Response time1 day
Response rate92%
6 neighbors recently requested a quote
Avatar for D&G Remodeling
D&G Remodeling
5.0(
38
)

Serving Frederick, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Warranties offered

"Since day one, Deybi and his crew have been able to solve any electrical problems I've had and provide efficient and effective solutions at a proactive level, long term result. First time working with them was due to our previous preferred electrical contractor failing to help with complex electrical problems at a commercial space (office space), so after some looking we found DBG Electric. They were able to help with setting up light switch wiring, installing cubicle receptacles and replacing fluorescent light ballast along with breakers. At another commercial site, we needed help with installation of power packs, emergency lights and flood lights. All of these were installed in a high ceiling area, which was no problem for DBG. They've also helped with lighting a my personal residence, ranging from kitchen light replaced with LEDs to recess lighting needed in the basement. I highly recommend using them, specially with difficult projects that require some ingenuity."
Electrical Project
kitchen remodel
VIENNA KITCHEN REMODEL
FORT WASHIMGTON KITCHEN
ALEXANDRIA  BATHROOM RENOVATION

+50

Response time10 hrs
Response rate93%
4 neighbors recently requested a quote
...
Showing 1-10 of 406
Generator Install questions, answered by experts

If you’ve experienced frequent power outages, rely on well pumps, or use medical equipment at home in Frederick, it’s a good time to consider generator installation. Many residents plan projects before summer thunderstorms or winter ice storms. Noticeable increases in power interruptions, new construction nearby, or the need for reliable backup power for remote work are also strong indicators to schedule an installation.

Helpful?

In Frederick, signs that generator installation may need to be redone include visible rust or corrosion on backup generator terminals, especially after humid summers or heavy rainfall. If you notice the generator vibrating excessively, producing louder-than-normal noise, or failing to start reliably during outages, it’s worth a professional review. Placement too close to living spaces or missing weatherproofing are also red flags for homeowners in Frederick.

Helpful?

In Frederick, older homes or those in historic districts often have outdated electrical panels or tight property lines, which can complicate standby generator installation. Homes on steep slopes, near flood-prone creeks, or with dense landscaping may require custom solutions for safe placement. Limited access to natural gas lines or overhead utility wires can also mean alternative fuel sources or creative routing for backup power connections.

Helpful?

After generator installation in Frederick, schedule any required inspections and inform your utility provider of the new backup power system. Test the automatic transfer switch weekly and inspect for debris or drainage issues around the unit. Maintain a monthly test run, change oil every six months, and arrange for annual professional servicing. Register your warranty, update your insurance, and confirm compliance with local noise ordinances.

Helpful?

Frederick homeowners are increasingly choosing whole-house standby generators with smart monitoring features for real-time alerts. Automatic transfer switches and load management systems are common for seamless power transitions. Many opt for sound-reducing enclosures and discreet placement behind native landscaping. Concrete pads with decorative edging are popular for both stability and curb appeal, especially in neighborhoods with strict HOA guidelines.

Helpful?

The Frederick, MD homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"