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TRUSTED BY GLEN ARM, MD HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon19
    Verified generator installs reviews

Find Generator install pros in Glen Arm

Avatar for Tim Kyle Electric Heating & Cooling
Tim Kyle Electric Heating & Cooling
4.9(
370
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Glen Arm, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1986

Emergency services offered

Warranties offered

"Can't say enough about how smooth a process this was, from permitting to planning, installation to startup. Ryan and his team were very professional, very clean and thoughtful throughout. Very responsive and friendly in their communications and the work is outstanding. Looking forward to their help for many years to come."
Additional Photos
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+17

Response time1 day
Response rate100%
18 neighbors recently requested a quote
K&K Electric
4.9(
36
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Glen Arm, 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
Avatar for Clinton Electric Co Inc
Clinton Electric Co Inc
4.6(
175
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Glen Arm, MD and surrounding areas

Approved

In business since 1969

Emergency services offered

Warranties offered

"I had an excellent experience with Clinton Electric Co. overall and the electrician they sent, Eric Shipley. Communications before the visit were prompt, professional, and geared toward promoting confidence. Electrician was also courteous and professional throughout the visit, provided excellent communications as to expected costs and the diagnostic he was performing, and performed the work quickly and efficiently (tested the wiring, replaced electrical outlets, installed new circuit breaker, and tested to confirm all outlets and the dishwasher were working). Provided email with invoice before leaving the visit. Company communications practices geared toward safety and inspired confidence - dispatcher provided name of electrician before visit; company also texted and emailed photo of electrician prior to visit. Electrician wore mask and followed safe COVID-19 practices. I was very pleased and would use this company again, as well as highly recommend them."
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+2

Response time1 day
Response rate100%
10 neighbors recently requested a quote
Avatar for Electrical USA, Inc.
Electrical USA, Inc.
4.3(
42
)
Fixed Generator - Repair

Serving Glen Arm, 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 by71%of homeowners
Avatar for Artisan Electrical LLC
Artisan Electrical LLC
4.6(
21
)
Fixed Generator - Install

Serving Glen Arm, MD and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Very friendly from the technician to the secretary. They got me in fast worked with my schedule and got out fast. They also mounted my ring doorbell.. Excellent service and the price was awesome"
Fixed Generator Install
Fixed Generator Install
Fixed Generator Install
Fixed Generator Install
Fixed Generator Install

+2

Response time1 day
9 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for Mr. Electric of Baltimore
Mr. Electric of Baltimore
5.0(
8
)
Fixed Generator - InstallPortable Generator - Install

Serving Glen Arm, MD and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Mr. Electric responded immediately to my request and scheduled the quote visit the next day. They were able to fix the electrical switch during that apointment in a very fast and professional manner. I highly recommend them."
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Gallery
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+3

13 neighbors recently requested a quote
Avatar for Calvary Electric LLC
Calvary Electric LLC
5.0(
13
)
Fixed Generator - Install

Serving Glen Arm, 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 time4 days
Response rate100%
4 neighbors recently requested a quote
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Generator Install questions, answered by experts

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

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.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

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. 

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

The Glen Arm, MD homeowners’ guide to generator installs

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