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Long Electric, LLC
4.9(
167
)

Serving Keymar, 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 Tim Kyle Electric Heating & Cooling
Tim Kyle Electric Heating & Cooling
4.9(
369
)

Serving Keymar, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1986

Emergency services offered

Warranties offered

"Time Kyle electric sent an extremely proficient technician to my house. Justin and the other technician (sorry I can't recall his name) where professional, friendly and best of all fixed my electrical issues so I can have lighting in my bathrooms and hallway. They explained to me what needed to be done and were able to reroute the wiring for success. I am extremely happy and the technicians are awesome."
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+17

Response time1 day
Response rate95%
19 neighbors recently requested a quote
Avatar for Able Electrical Services Inc
Able Electrical Services Inc
4.9(
468
)

Serving Keymar, MD and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Everything about Able Electrical Services service was superb! I was in a jam, and Able Electrical Services came to the rescue. Both of the mechanics that assisted were excellent. Russell Ridgway was the primary mechanic and he was amazing! His work is superior and he exceeded my expectations every step of the way. For example, I needed electrical outlets to connect install a wet bar. He measured the wet bar and installed the outlets exactly where they were needed and ensured sufficient power was added to accommodate a kegerator and mini-frigs. I highly recommend Able Electrical Services and hope I never need to use any other electrician."
Kitchen Lighting
Modem Home
Response time1 day
1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for GAC Services
GAC Services
4.8(
291
)

Serving Keymar, 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 Keymar, 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."
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+2

Response time1 day
Response rate92%
6 neighbors recently requested a quote
Avatar for Rollins Repair
Rollins Repair
4.7(
56
)

Serving Keymar, MD and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

"He found an electrical problem that Potomac Edison arrived to do a emergency repair. It was a fire hazard. So thankful he found the problem and did an excellent install with our Generator."
 Air Cooled Generator
 30KW Quitesoure
 Residential Installation
 20KW Air Cooled
 Another Residential Installation

+6

Response time9 hrs
1 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Kolb Electric Inc
Kolb Electric Inc
4.2(
222
)

Serving Keymar, MD and surrounding areas

Approved

In business since 1925

Free estimates

Emergency services offered

"Installer did a good job on installing ceiling fan with light kit. He was friendly and cleaned up after installation. Still working well 2 months later. The only things disappointing is that my initial phone quote was about $100 less than I was originally charged. I'm not sure if the difference was the labor I was charged to assemble the ceiling fan.

Recently, I was contacted by the Frederick Manager, Lou and he took care of my concerns. We discussed future job opportunities in my home. I would recommend this company for their good work and customer service."
Response time1 day
Response rate94%
7 neighbors recently requested a quote
Avatar for Mario Falconio Electric, LLC
Mario Falconio Electric, LLC
5.0(
24
)

Serving Keymar, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Credit card accepted

"Falconio electric is one of the best most professional companies I have ever hired to do a job. I bought a Tesla and could not find anyone to install my charger at my house, every company I called said 2 weeks for install. Mario the owner calls me and says “all my electricians are on a big job for a week, however I will personally come out and install the equipment next day” I was so shocked and impressed he went out of his way. He was so professional and the work was top tier 5 stars!!!!!! Thank you Mario"
Response time5 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for Calvary Electric LLC
Calvary Electric LLC
5.0(
13
)

Serving Keymar, MD and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

Calvary Electric LLC is a family owned, locally operated business specializing in commercial and residential electrical service and new construction. We serve our clients well with strong values in integrity, good character and hard work. If you desire quality workmanship and a job done right the first time, then Calvary is the contractor for you.

Whole House Generator
Kitchen Remodel
Kitchen Remodel
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+13

Response time3 days
11 neighbors recently requested a quote
Recommended by100%of homeowners
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Generator Install questions, answered by experts

Generators are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

The Keymar, MD homeowners’ guide to generator installs

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

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