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Avatar for The Margroff Company
The Margroff Company
5.0(
1
)
Generator - Install - For Business

Serving Prosperity, PA and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

The Margroff Company is a full service electrical company with over 20 years of experience. We are honest, loyal and provide the best customer satisfaction int own. We pay close attention to detail and owner, Jubal, is always on site to ensue quality work. Call us for a free estimate!

Recommended by100%of homeowners
Avatar for DAN O'SHEA ELECTRIC
DAN O'SHEA ELECTRIC
5.0(
15
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Prosperity, PA and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"Dan and his team did a fantastic job. My initial issue ended up being a lot more elaborate than initially anticipated but I was so pleased with their initial work I hired them again to address the larger system issue. I absolutely recommend and will definitely look to hire them again next time I have any electrical problems."
Car Wash
Car Wash
Car Wash
Car Wash
Car Wash

+15

Response time5 hrs
Response rate96%
Recommended by66%of homeowners
Avatar for Dave's Electric
Dave's Electric
3.7(
40
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Prosperity, PA and surrounding areas

In business since 2012

Free estimates

Emergency services offered

"

He arrived about 15 minutes earlier and went through the house to find out exactly what was needed for the job.  After the two hours I had him remain to complete the work I had to finish one floor of the house.  I also discussed him returning to the house to do other floors.

Dave's began with the completion of wiring on three lights we had in the basement.  The old lighting was pulled and new wires run for outlets.  A few junction boxes that were old and had bad wires were pulled and the wiring that was replaced was pulled out so it didn't confuse us or interfere with the remaining work.

After the switch for the lighting was installed and a plug that had to be taken out removed and replaced Dave's fixed the issues I had with my security light.

Dave and his helper were polite, professional and proficient in getting the work done.  That is why I kept them on the job until the floor was finished.



"
Recommended by73%of homeowners
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Generator Install questions, answered by experts

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.

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. 

Portable generators provide backup power for essential appliances during outages and are easy to relocate.

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

The Prosperity, PA homeowners’ guide to generator installs

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