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Verified Reviews for Generator Install pros in Overlea, MD

*The Angi rating for Generator Install companies in Overlea, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Overlea, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on December 31, 2025

Find Generator install pros in Overlea

K&K Electric
4.9(
36
)

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
1 neighbors recently requested a quote
Recommended by87%of homeowners
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Avatar for Electrical USA, Inc.
Electrical USA, Inc.
4.3(
41
)

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
69 neighbors recently requested a quote
Recommended by73%of homeowners
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Avatar for Benfield Electric Co., Inc.
Benfield Electric Co., Inc.
4.6(
11
)

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
3 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Calvary Electric LLC
Calvary Electric LLC
5.0(
13
)

Serving Overlea, MD and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"Great crew. Responded quickly and professionally. Was able to circumvent some issues with my initial wants and come up with a better layout for the project. Just what was needed and complete in record time. Great pricing as well for the detailed work performed."
Whole House Generator
Kitchen Remodel
Kitchen Remodel
Additional Photos
Additional Photos

+13

5 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Clinton Electric Company, Inc.
Clinton Electric Company, Inc.
3.9(
172
)

Serving Overlea, MD and surrounding areas

Approved

In business since 1969

Emergency services offered

Credit card accepted

"They checked my generator and said nothing was wrong, that the problem was probably with the electric companies transformer. My problem still exist. The electric company sent people out to check the current coming to my house and said everything is okay. They are going to install a monitor to check what is going on when there is an outage. So as of now my generator does not come on."
The Team
Generac Automatic Standby Generator
Dusk to Dawn Spotlights
Electrical Panel
Trucks

+7

145 neighbors recently requested a quote
Recommended by86%of homeowners
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Avatar for Serene Elec inst & Rep Services LLC
Serene Elec inst & Rep Services LLC
5.0(
6
)

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

In many cases, yes. There are models called dual-fuel generators and fuel switches, but only between certain types of fuel. For example, with the right setup you can convert a generator from natural gas to propane. Some allow switching between diesel and gasoline. There are even tri-fuel generators available in some cases, which adds a large layer of security if you are worried about fuel availability in times of crisis. Always check your generator capabilities and manual instructions before trying to switch fuels. Some generators can use another fuel but may need a fuel conversion kit to prep them first.

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.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

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

Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.

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.

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