Top-rated generator install pros.

Best generator install pros near Gambrills, MD

Enter your zip and get matched with up to 5 pros

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

Select your specific project to find the pro for you.

TRUSTED BY GAMBRILLS, MD HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon29
    Verified generator installs reviews

Top-Rated Generator install pros in Gambrills - Updated Nov 2026

Green's Electric
5.0(
25
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Gambrills, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Emergency services offered

"This company resolved my electrical issue quickly and professionally. The technician was knowledgeable and clearly explained what was wrong and how they fixed it. I was expecting a longer wait, so I was grateful they could get to me so soon. Pricing was fair and the whole experience was excellent. I def highly recommend this company to anyone needing electrical work done. Thank you!!!"
Response time1 day
Response rate100%
21 neighbors recently requested a quote
Avatar for All In Electric
All In Electric
4.9(
36
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business+1 more

Serving Gambrills, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Emergency services offered

"The All-In Electric team was amazing. Very thorough and very fast running an outside line (underground) to my shed and installing sub-panel for lights and outlets with room to grow as needed. I would definitely hire again."
(2) Automatic Transfer Switches next to the (2) main electrical panels.
Here is a 22kw Generac Standby Generator.
A 24kw Guardian Series Generac generator sitting on top of a 3" concrete pad.
The RED light will turn GREEN after AIE activates in through Generac.
Whole House Standby Generator System

+51

Response time1 day
Response rate99%
14 neighbors recently requested a quote
Avatar for Duke's Electrical Services, Inc.
Duke's Electrical Services, Inc.
4.9(
310
)
Portable Generator - Install

Serving Gambrills, MD and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"I hired them to come and install an exhaust fan as well as a thermostat. After realizing my hvac system also had a humidifier function that was incompatible with the thermostat I bought they were able to properly install my exhaust fan (I bought the wrong kind as well) and hung a chandelier under two hours. Very efficient and fair pricing."
Recess light install
Recess and fan install
Recommended by90%of homeowners
Avatar for Artisan Electrical LLC
Artisan Electrical LLC
4.6(
21
)
Fixed Generator - Install

Serving Gambrills, MD and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Very friendly from the technician to the secretary. They got me in fast worked with my schedule and got out fast. They also mounted my ring doorbell.. Excellent service and the price was awesome"
Fixed Generator Install
Fixed Generator Install
Fixed Generator Install
Fixed Generator Install
Fixed Generator Install

+2

Response time1 day
9 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for Horizon Services, LLC (MD)
Horizon Services, LLC (MD)
3.8(
1,464
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Gambrills, MD and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

Horizon Services (MD), LLC, is the regions largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey and Northeastern Maryland. After a quarter of a century in business, Horizon Services (MD), LLC, remains fully committed to setting the industry standard for customer service, installation and focusing on things that are important to busy homeowners.

Recommended by89%of homeowners
Avatar for Critical Peake Services, LLC
Critical Peake Services, LLC
5.0(
5
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Gambrills, MD and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

Critical Peake is a full-service commercial and residential electrical contractor serving the\nMid-Atlantic. We handle projects of every size. Our licensed, bonded, and insured team\nprovides scheduled electrical service and 24/7 emergency support. We deliver safe,\npractical solutions with clear communication and responsive support. With more than 100\nyears of combined leadership experience, we serve homes, businesses, multi-family\ncommunities, and public facilities. Our work ranges from repairs, maintenance, and system\nupgrades to tenant fit-outs, backup power, lighting, security, EV charging, and design-build\nconstruction. We build long-term relationships by staying responsive before, during, and\nafter each project.

Old panel, before
Old panel wiring
Inside old panel
New 42-space panel
Finished new panel

+15

3 neighbors recently requested a quote
Technician Engineers Group
3.7(
15
)
Generator - Install - For Business

Serving Gambrills, MD and surrounding areas

Approved

In business since 1996

Offers commercial services

Customers say: Quick response

"Anthony and his team do expert electrical work of all kinds. We are a 145 year old non-profit organization with buildings and grounds, and have contracted with Technician Engineers Group (TEG) on two large projects (and several small ones) over the last 15 years. One project rewired a large 125 year old building listed on the National Register of Historic Places, and one installed an extensive outdoor lighting system. In these two unusual situations TEG worked closely with us to find innovative solutions to our unique needs. We are very pleased with the results, enjoyed their can-do approach, and highly recommend this company for any electrical challenge. We found TEG reliable, honest, on time, and all the work was completed ahead of schedule."
4 neighbors recently requested a quote
Recommended by53%of homeowners
...
Showing 1-10 of 117
Generator Install FAQs, answered by experts

Portable generators provide backup power for essential appliances during outages and are easy to relocate.

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

If you’re wondering whether gas generators produce carbon monoxide, know that natural gas generators do not produce carbon monoxide if they are functioning properly, as natural gas burns cleanly. However, if the generator malfunctions and the gas does not burn completely, there is potential for carbon dioxide to be produced. To prevent malfunctions, it's crucial to perform regular maintenance, including running the generator weekly and scheduling professional inspections every 6 to 12 months. Also, be sure to test your carbon monoxide detectors regularly to ensure they function in the rare case of the generator producing carbon monoxide.

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

The Gambrills, MD homeowners’ guide to generator installs

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