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Avatar for GAC Services
GAC Services
4.8(
292
)

Serving Annapolis Junction, MD and surrounding areas

Approved (Corporate)

In business since 1970

Free estimates

Warranties offered

"The process from beginning to end was highly professional, technically very competent and complete, and the installation was impressive (Team of about nine people, all worked efficiently and simultaneously outside and inside my house. The job was done in a little over half a day. Very happy with my decision to hire GAC to spec, supply, and install the system."
Additional Photos
58 neighbors recently requested a quote
Recommended by94%of homeowners
Green's Electric
5.0(
16
)

Serving Annapolis Junction, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Emergency services offered

"Green’s Electric was great! They quickly provided an accurate estimate for the work we needed done. We appreciate the attention to details on the professional appearance of the work as well as the reasonable pricing. The finished work looks better than we could have imagined. Green’s was able to schedule the work very quickly and was on time and finished within the original estimated timeframe. I’d recommend this company for quality, reasonably priced master certified electrical work. They were great!"
Response time1 day
18 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Bailey & Shipp Electric
Bailey & Shipp Electric
4.1(
82
)

Serving Annapolis Junction, MD and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Great company, great people. Talented young team. Very personable. Did a efficient job of getting my generator installed quickest way possible."
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 Clinton Electric Company, Inc.
Clinton Electric Company, Inc.
3.9(
172
)

Serving Annapolis Junction, MD and surrounding areas

Approved

In business since 1969

Emergency services offered

Credit card accepted

"Robin was super nice and easy to work with - she called me to notify me when Bob would be arriving. Bob worked quickly and new his stuff about generators."
The Team
 Generac Automatic Standby Generator
Dusk to Dawn Spotlights
 Electrical Panel
Trucks

+7

Response time2 hrs
135 neighbors recently requested a quote
Recommended by86%of homeowners
Independent Power and Solar LLC
5.0(
2
)

Serving Annapolis Junction, MD and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

#1 Customer satisfaction is what determines our success, which is why we take a hands-on approach. You'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your project needs. Contact us today for a fair and accurate estimate of your project. We look forward to adding you to our long and growing list of happy customers.\n

2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for One Source, LLC
One Source, LLC
4.8(
6
)

Serving Annapolis Junction, MD and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

One Source Systems is one of the premier custom integrators in the greater Washington D.C. area. We are focused on an elevated client experience and meeting your needs for Smart Home design, including experiential elements such as lighting, shades and incredible dedicated theater and Audio/Video solutions. With over 10 years of experience in the audio industry, we are the experts you need to take care of your home or business. We will treat your home as we would treat our own. Give One Source a call today - we look forward to working with you!

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
)

Serving Annapolis Junction, 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
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Generator Install questions, answered by experts

Costs range from $500 to $2,500, depending on generator type and installation complexity.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

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

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.

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

The Annapolis Junction, MD homeowners’ guide to generator installs

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