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
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+4 more

Serving Frederick, MD and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"These guys did a fantastic job and were an absolute pleasure to work with. Small business, all primary work done by the three owners/operators of the group, who are are masters in their respective fields: "Tech Guy", Electrician, and Gas Fitter. (I genuinely hope to not cause offense by this broadly generalized description). I had a 20kW Cummins LP/NG-fired automatic backup generator installed and connected to a new automatic transfer switch, and (since we had no existing gas system) a new 500gallon LP propane tank installed and under-grounded to feed the generator. My main electrical panel was brought up to current code in the process. The excavation and burial work was subcontracted to a trusted local operator that did really nice work, and they worked with Southern States to provide a tank and first fill. They handled all the permits and coordinated the inspections. Waiting for the county inspector, and waiting for Southern States to fill the tank after the gas inspection, were the only observable delays in the process, and those were negligible/reasonable. The SciFiHomes people were quick, efficient, and obviously practiced with all of their pieces of the work. They will strongly prefer Cummins-brand generators over the competitors, and they are more a more expensive initial investment compared to them. After doing my own research after their sales pitch, it is a very worthwhile "upgrade". The difference between Cummins' generators and the competitors is fuel efficiency; according to the math, I'll get over 24 hours of additional runtime vs (as an example) Generac's 20kW generator at 40% average load on a full 420gallons of propane in the new 500gal tank. With an extended outage, or multiple long outages as with last winter in Frederick County, that's a very significant advantage. Sorry for the "sales pitch"; I only included this to prove that they're in my opinion very justified in pushing the "premium" brand. We purchased the extended warranty uplift as well as their extended service agreement. We can't recommend them enough; fantastic experience, and this generator has already flawlessly provided over 20 hours of outage coverage in the 5 months we've had it. Winter is coming, and we'll be ready this time. It just works... These guys and their total solution probably isn't the absolute cheapest in the area... but we absolutely got what we paid for. Thanks SFH!"
Cummins Onan 400A ATS
Cummins Onan 20kW
Briggs & STratton Standby Generator
Response time7 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for Clinton Electric Co Inc
Clinton Electric Co Inc
4.6(
174
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Frederick, MD and surrounding areas

Approved

In business since 1969

Emergency services offered

Warranties offered

"Clinton Electric is a very professional organization: responsive, efficient, quality materials, excellent workmanship and a reasonable price. Jordan Mayer, the electrician, who performed the installation was outstanding. I highly recommend this company."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Response time1 day
Response rate100%
8 neighbors recently requested a quote
Avatar for Rollins Repair
Rollins Repair
4.7(
56
)
Fixed Generator - RepairGenerator - Repair - For Business

Serving Frederick, MD and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

"Mr. James Rollins was exceptional. Had an issue that came up last year with my Generac generator and he was quick to respond but I was not able to be as fast. Power came back on so I didn't follow up. Generator hasn't worked and was worried about a power outage, so I reached back out. He came out on the same day, diagnosed my issue in a minute, and fixed it. His work was outstanding and I can understand why he is so busy. Everyone wants Rollins Repair. If you can get him, I would ask James Rollins to help you."
 Air Cooled Generator
 30KW Quitesoure
 Residential Installation
 20KW Air Cooled
 Another Residential Installation

+6

Response time9 hrs
4 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Ryan Electric
Ryan Electric
4.6(
10
)
Fixed Generator - Install

Serving Frederick, MD and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Project
Project
Project
51 neighbors recently requested a quote
Avatar for Kline Electrical Services
Kline Electrical Services
5.0(
2
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Frederick, MD and surrounding areas

Approved

In business since 2023

Emergency services offered

Warranties offered

"Simply amazing from start to finish! I can't say enough nice things about this company or the people that I dealt with. They were all professional, friendly and they did great work. They called me just minutes after I clicked their name on Angi's List and had someone out to give me an estimate and had my appointment date set in record time from most companies that I have dealt with for home improvement. I hate having people in my house working but I felt totally comfortable with them. The work they did was exceptional. We got a new power box (breaker box - whatever it's call) and a new meter and a couple of new outlets put in. We also got new smoke detectors throughout the house. They had to work around some issues and relocate a bit of pipe from out water filter system that was in their way. And they just took care of it without any complaints. I didn't have to do anything. They took care of it all and had the inspector come out and get it approved. I feel safe in my home now. I highly recommend this company and I will be calling them for any future electrical work that I need done."
Our technician Mitchell while completing the replacement
Completed panel project
Additional Photos
Baseboard Heater Install Project
The Kline Family Service Club Seal

+3

Response time1 day
Response rate100%
6 neighbors recently requested a quote
...
Showing 1-10 of 69
Generator Install questions, answered by experts

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?

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?

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?

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.