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Avatar for Smith Power Group, Inc.
Smith Power Group, Inc.
5.0(
19
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Sewell, NJ and surrounding areas

Approved

In business since 2011

Free estimates

Offers commercial services

"Carlton and Mary Smith are a delightful and professional company to deal with as SPG....they are talented and knowledgeable about anything they say they can do. In addition, they are very cost effective. Everything they said they can do was correct and efficient and on time. I highly recommend dealing with them."
Generator/ Propane
Generator 10kw
Solar Deptford
My Work
My Work

+3

Response time2 days
5 neighbors recently requested a quote
Recommended by94%of homeowners
Raynor Services- Electrical/HVAC/Generators/Solar
4.5(
157
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Sewell, NJ and surrounding areas

Approved

In business since 1994

Free estimates

Credit card accepted

We are a local Female & Family owned & operated contractor who has been serving the South Jersey area for over 30 years in all their Electrical, Heating, Cooling, & Generator needs. We perform both light commercial & residential installations, renovations & upgrades. We train our team to not just have the technical skills needed to do their jobs well, but how to help customers get to what they want for both comfort AND budget. Working with us you'll come to expect an amazing office staff to take your calls, address your needs & get the best technicians to complete the work you need done. Our technicians receive weekly training to stay on top of today's ever changing technology. They are all uniformed, background checked & drug tested. We also always give you an upfront price & get your approval before we start any work. We cannot wait to provide you "Service The Way It Used To Be"! Give us a call today!! We proudly hold an A+ Rating with the Better Business Bureau.

Raynor Tech Homeowner
Raynor Tech Homeowner
Raynor Tech Homeowner
Raynor Tech Homeowner
Raynor Tech Homeowner

+18

Recommended by89%of homeowners
Avatar for Kidder Enterprises, LLC
Kidder Enterprises, LLC
4.6(
138
)
Portable Generator - Install

Serving Sewell, NJ and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

"Ken was great to work with and I would definitely use him again and refer my friends to him. Was very knowledgeable and was fairly priced. He was also able to get me in right away for my car charger install."
Response time12 hrs
9 neighbors recently requested a quote
Recommended by64%of homeowners
Avatar for Spotlight Solar, LLC
Spotlight Solar, LLC
4.7(
150
)
Portable Generator - Install

Serving Sewell, NJ and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"They were quick to respond and very friendly from estimate to installation. The electrician was quick, efficient and a great representative of his company. I would use them again and recommend them."
Response time1 day
404 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Mister Sparky of Turnersville
Mister Sparky of Turnersville
5.0(
8
)
Fixed Generator - InstallPortable Generator - Install

Serving Sewell, NJ and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Fantastic work! They installed under-cabinet LED lighting in our kitchen, and it has completely transformed the space. The lighting is crisp, bright, and perfectly placed to illuminate the countertops and backsplash. The team was prompt, clean, and extremely professional throughout the process. Highly recommend!"
1 neighbors recently requested a quote
Avatar for Harris Plumbing, Heating, Air & Electrical
Harris Plumbing, Heating, Air & Electrical
3.9(
44
)
Fixed Generator - InstallFixed Generator - Repair

Serving Sewell, NJ and surrounding areas

Approved

In business since 1988

Credit card accepted

Customers say: Quick response

"Woke up with no heat! Right before Christmas! Harris responded instantly and sent out someone to check the problem. Due to incorrect installation, rain had gotten into the improperly sealed roof vents, which in turned fried the transformer, inducer and circuit board. They were at my place bright and early the next morning installing a brand new furnace, more efficient and quieter, with a 10 year warranty. Arranged financing and were finished by 3pm. Everyone from my first phone call to the last service tech was professional, polite, knowledgeable and all around pleasant and really nice people. They will be my go to for heating, AC, plumbing and electrical from here on in. Glad I found them!"
Team
Team
Team
Truck
Truck

+8

Response time1 day
460 neighbors recently requested a quote
Recommended by33%of homeowners
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Generator Install questions, answered by experts

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.

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.

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

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.

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.

The Sewell, NJ homeowners’ guide to generator installs

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