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TRUSTED BY CABIN JOHN, MD HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon36
    Verified generator installs reviews

Find Generator install pros in Cabin John

Long Electric, LLC
4.9(
168
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Cabin John, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Customers say: Quality work

"We hired Long Electric for the installation of a whole-house generator. I have nothing but good to say about the Long Electric team. Great customer service and very knowledgeable installation team. The installation went flawless and the team cleaned up after the work. I strongly recommend Long Electric!"
Response time2 days
6 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for GAC Services
GAC Services
4.8(
292
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Cabin John, MD and surrounding areas

Approved (Corporate)

In business since 1970

Free estimates

Warranties offered

"I’m back again to write another stellar review for GAC. Last year they replaced our HVAC system; this year we circled back and had them install a home generator. This was a long and drawn out process due to the various approvals needed from Montgomery County as well as coordination with Washington Gas (which ended up not just being a simple sign off but necessitating an additional, expensive upgrade to the gas line from the street to our home). Nevertheless, GAC did a fantastic job shepherding this process over the 6+ months of waiting on stakeholders, and they were also maximally accommodating to our family’s significant constraints on time and availability (due to health concerns related to a medically fragile family member). A special kudos to Sandy M, GAC’s master electrician, who took it on personally to ensure we were taken care of all throughout this process, going above and beyond with phone calls, text messages, personal visits, etc. on behalf of my family, I want to thank GAC and am giving top marks across the board for this effort which was complex , lengthy, and ultimately successful."
Additional Photos
36 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Bailey & Shipp Electric
Bailey & Shipp Electric
4.1(
82
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Cabin John, MD and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"On both appointments, the technicians (David the first time, Matt & Evan the second time) were respectful and honest, very well organized. And they arrived right on time. We had ceiling fans and recessed lighting installed. They kept the work areas clean. -Frank K., City of Gambrills. My wife and I are very happy with their work, and the jobs were completed in the quoted time, even early! Everything was well explained and questions were answered with the feeling that they weren't in a rush to leave until I was satisfied. We will call again for future jobs."
3 recessed lights
Single Recessed Light
Custom Bathroom Wiring
chandelier
Panel Replacement After

+8

Response time10 hrs
3 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for One Source, LLC
One Source, LLC
4.8(
6
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Cabin John, MD and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"I had John and Aaron come to my home because I was interested in installing a Theater in my new home. They went through the new technologies and options for the Theater and were very knowledgeable. I ended up going with a 4K projector and a Dolby Atmos and absolutely love it and show it off to all my neighbors. Iâ m so glad I took their recommendation on spending the extra money on the projector to get true 4K. I watched the Pitt game this weekend in 4K and it was amazing. I totally recommend this company."
After!
Proper Grounding Showcase
Theater Screen with Starry Night Ceiling
Before!
Lighting Fixtures in a restaurant

+26

Response time2 days
Recommended by80%of homeowners
Avatar for Serene Elec inst & Rep Services LLC
Serene Elec inst & Rep Services LLC
5.0(
6
)
Fixed Generator - Install

Serving Cabin John, MD and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

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

Commercial GFCI Repair
Calvert Generator
New to Angi
Generator - Install - For Business

Serving Cabin John, MD and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

Calvert Generator is 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.\n

Response time10 hrs
1 neighbors recently requested a quote
Mr. Sparky of Northeast Beltway
New to Angi
Fixed Generator - InstallFixed Generator - Repair

Serving Cabin John, MD and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

At Mister Sparky of Northwest Beltway, we believe homeowners deserve safe, reliable electrical service from professionals they can trust. Our licensed electricians are committed to delivering high-quality workmanship, upfront pricing, and exceptional customer service on every job.\n\nWhether you need electrical repairs, panel upgrades, lighting installation, EV charger installation, generator services, or emergency electrical assistance, our team has the experience and expertise to get the job done right the first time. We take pride in providing prompt, professional service and treating your home with the respect it deserves.\n\nAs part of the nationally recognized Mister Sparky brand, we're backed by industry-leading training and a commitment to excellence. Our goal is simple: to keep your home powered safely while delivering a stress-free customer experience from start to finish.

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Generator Install questions, answered by experts

Costs depend on generator type, labor, and additional wiring or transfer switch requirements.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

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.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

The Cabin John, MD homeowners’ guide to generator installs

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