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Verified Reviews for Generator Install pros in Williamstown, NJ

*The Angi rating for Generator Install companies in Williamstown, NJ 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 Williamstown, NJ 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 July 08, 2026

Find Generator install pros in Williamstown

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

Serving Williamstown, 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
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Avatar for Kidder Enterprises, LLC
Kidder Enterprises, LLC
4.6(
138
)
Portable Generator - Install

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

"Ken is very nice. Explains what's going on, the process and timelines. Had an issue with my charger (I purchased it myself, he just installed it); even though he didn't have to, he walked me through troubleshooting, turned out to be an issue with the programming on the charger itself. He was communicating with me even after my check cleared to make sure I could charge my car fully. Would hire again in a heartbeat."
Response time12 hrs
9 neighbors recently requested a quote
Recommended by64%of homeowners
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Avatar for Spotlight Solar, LLC
Spotlight Solar, LLC
4.7(
150
)
Portable Generator - Install

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"the job was complicated because another installer had left connections from heated floor tiles in the wrong place Chris and Joe and Anthony had to do a lot of adapting to get connections made I felt that they did an excellent,difficult job."
Response time1 day
404 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Mister Sparky of Turnersville
Mister Sparky of Turnersville
5.0(
8
)
Fixed Generator - InstallPortable Generator - Install

Serving Williamstown, 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
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Avatar for AMF Electric, LLC
AMF Electric, LLC
5.0(
3
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Williamstown, NJ and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"The gentlemen who performed the service were courteous and professional. They left the area as clean as when they started. I highly recommend AMF Electric!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

5 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for PDQ Electric Corporation
PDQ Electric Corporation
3.5(
36
)
Fixed Generator - RepairGenerator - Repair - For Business

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Ryan was fast and did an outstanding job in running a line for a dryer hook-up. The price was reasonable."
Recessed/Pendant Lighting
Sophisticated Lighting
Pathway/Wallwash Lighting
Existing Roof Solar
Accent Lighting

+31

Recommended by84%of homeowners
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Avatar for Harris Plumbing, Heating, Air & Electrical
Harris Plumbing, Heating, Air & Electrical
3.9(
44
)
Fixed Generator - InstallFixed Generator - Repair

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1988

Credit card accepted

Customers say: Quick response

"Harris has great people to work with who really know what they are doing. They will be my number one go to for any services they offer."
Team
Team
Team
Truck
Truck

+8

Response time1 day
460 neighbors recently requested a quote
Recommended by33%of homeowners
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Avatar for Horizon Services, Inc. (NJ)
Horizon Services, Inc. (NJ)
3.9(
1,635
)
Fixed Generator - InstallPortable Generator - Install

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1989

Credit card accepted

Customers say: True professional

Experience The Horizon Difference.\n\nOn-Time Service. Up-Front Pricing. And The Job Done Right and Clean the First Time. GUARANTEED!\n\nHorizon Services is the regions largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey, and Northeastern Maryland. After a quarter of a century in business, Horizons Services remains fully committed to setting the industry standard for customer service, installation, and focusing on things that are important to busy homeowners: respect for their time, their home and their property; up-front pricing, and an unconditional 100% money back guarantee.\n

Recommended by88%of homeowners
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Avatar for Hutchinson Plumbing Heating Cooling, LLC
Hutchinson Plumbing Heating Cooling, LLC
3.9(
111
)
Fixed Generator - InstallFixed Generator - Repair

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1948

Free estimates

Credit card accepted

If it is 2 am and your air conditioner just broke, then Hutchinson is here to help. Our company has trained Customer Service Representatives waiting to take your call, with technicians ready to fix your air conditioner 24/7. Whether you are in Gloucester County NJ or Delaware County PA, our fully-stocked repair vehicles contain all of the parts we need to get you cool again; TODAY!

Recommended by80%of homeowners
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Avatar for Ace’s Electrical Construction
Ace’s Electrical Construction
5.0(
1
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+2 more

Serving Williamstown, NJ and surrounding areas

Approved

Free estimates

Offers commercial services

Hello we offer full electrical services ranging from new services, panels, new wiring, troubleshooting, lighting, kitchens, bathrooms, and so much more\n\nFully Licensed in PA, NJ and DE\n\n

Service
Service
Service
Service
Request Quote
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Generator Install questions, answered by experts

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.

These advanced generators use a key fob or a smartphone app to remotely start, which is ideal for getting power back on immediately without venturing outside. This feature is more common on whole home generators, but you may be able to find it on large portable generators, too.

Carbon monoxide emissions aren’t only dangerous to human life, but they also harm our planet. While natural gas generators emit lower levels of CO than other fuel sources, there are still ways to reduce emission levels. For example, shop around for an eco-friendly generator that complies with current emission standards. Also, make sure your generator is serviced regularly to avoid CO buildup. 

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.

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 Williamstown, NJ 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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