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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

"Working with Smith Power Group, Inc. was a very rewarding and mutually beneficial experience. The owner, Carlton, sat with us and explained the entire process and answered all of our questions. The office kept us informed concerning the necessary paperwork, permits, etc. On the day of installation the crew arrived on time and proceeded to install our generator without issues. We highly recommend SPG."
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 by86%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 VALLEY ELECTRIC, LLC
VALLEY ELECTRIC, LLC
5.0(
8
)
Portable Generator - Install

Serving Sewell, NJ and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

Owned by Scott, Valley Electric, LLC brings over 10 years of experience specializing in residential and commercial electrical systems. From installations to repairs, Scott is dedicated to providing safe, reliable, and efficient solutions for homeowners. With a commitment to trust and quality workmanship, Valley Electric ensures every project is handled with care and precision. Whether you need upgrades, troubleshooting, or new installations, Valley Electric is the name you can count on for your home's electrical needs!

Sunoco Gas Station
Sunoco Gas Station
Sunoco Gas Station
Sunoco Gas Station
Kitchen

+11

Response time4 hrs
Recommended by71%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

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.

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.

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

While diesel is relatively stable, it won’t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it’s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn’t always ideal for home use.

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.

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.