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K&K Electric
4.9(
36
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Overlea, MD and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"I hired K & K to install a range hood. There was no electrical there previously so they had to run electric. I also had them install a new light fixture and remove an exhaust fan. K & K did excellent work and even repaired an electrical box that another contractor had installed. I was given a great estimate and was charged the estimate price. Would definitely use again and recommend."
Response time5 hrs
Recommended by87%of homeowners
Avatar for Electrical USA, Inc.
Electrical USA, Inc.
4.3(
41
)
Fixed Generator - Repair

Serving Overlea, MD and surrounding areas

Approved

In business since 1986

Free estimates

Credit card accepted

"GENERAC Maintenance and Repair. I just used Electrical USA for my home back up generator service and repair. They did a fantastic job very affordable, prompt and thorough. Definitely recommend them!"
Response time4 days
77 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for Benfield Electric Co., Inc.
Benfield Electric Co., Inc.
4.6(
11
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Overlea, MD and surrounding areas

Approved

In business since 1968

Warranties offered

Small jobs welcome

"Things went well. Russ Piper came out and met with me - to see what the project entailed. Meeting went well, I fully understood what they were going to do. I got a quote back quickly and moved forward with it.   When the plumber (Plumb Crazy)came out to see what needed to be done, I had some options .  I decided to have a higher service line brought into the home - now BGE is involved.   Without further stories - it took many weeks to get BGE to install the higher service, Throughout, this process, Benfield and the plumber where checking in with me for progress.  And when the inspections where all complete - they came right out and finished the installation."
Additional Photos
Additional Photos
Response time1 day
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Calvary Electric LLC
Calvary Electric LLC
5.0(
13
)
Fixed Generator - Install

Serving Overlea, MD and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"They did a great job capping the live wires from a wall we tore down and got our recessed lighting in the basement working with the switches. Reasonable priced and professional. Very considerate of the space and timely in completion."
Whole House Generator
Kitchen Remodel
Kitchen Remodel
Additional Photos
Additional Photos

+13

Response time3 days
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Serene Elec inst & Rep Services LLC
Serene Elec inst & Rep Services LLC
5.0(
6
)
Fixed Generator - Install

Serving Overlea, 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

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

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.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

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.

Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.

The Overlea, MD homeowners’ guide to generator installs

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