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TRUSTED BY MENDHAM, NJ HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon42
    Verified generator installs reviews

Verified Reviews for Generator Install pros in Mendham, NJ

*The Angi rating for Generator Install companies in Mendham, 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 Mendham, 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 31, 2025

Find Generator install pros in Mendham

Avatar for Green Sun Energy Services, LLC
Green Sun Energy Services, LLC
5.0(
73
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Mendham, NJ and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Glen and his team were prompt and professional during both installation and annual maintenance. We lost power during the last hurricane and the generator worked perfectly. Pricing was very good and Glen was even able to get me an extended warranty (promo from Generac). I would recommend Green Sun."
Ruisi
Oceanport
Additional Photos
Additional Photos
Additional Photos

+55

Response time4 days
5 neighbors recently requested a quote
Recommended by95%of homeowners
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Avatar for Kope Electric LLC
Kope Electric LLC
4.9(
97
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Mendham, NJ and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"An inexperienced/inept contractor had installed a generator for us and we parted ways with him when we discovered he neglected to pull permits for the work. We called Kope in for a consultation and they verified that not only was the generator not big enough to power our whole home (as was our intention) but it was installed illegally. We  hired them to guide us through the permit process, and bring the generator up to code which included piping a gas line through the garage, installing the correct sized pipes and fixing several mistakes with the electric. They were prompt, professional and knowledgable and coordinated seamlessly with the plumber they recommended to complete that part of the generator installation.  We now have have a safe, operating, legal generator. I would recommend Kope without hesitation and will use them for my future electrical needs.
"
Bathroom Lighting & Electrical
Bathroom Lighting & Electrical
Bathroom Lighting & Electrical
Bathroom Lighting & Electrical
Additional Photos

+38

Response time2 days
6 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for Princeton Electrical Makeover LLC
Princeton Electrical Makeover LLC
4.5(
204
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Mendham, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"Amazing service! They gave the fairest price and came to install it immediately. They were professional and I highly recommend them. I would use them again."
Tesla in charging status
Wiring Tesla Wall Connector
Full installation
Connection in the panel
Additional Photos

+26

Response time2 days
21 neighbors recently requested a quote
Recommended by89%of homeowners
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Avatar for RAP Electric Co., Inc.
RAP Electric Co., Inc.
4.6(
137
)
Portable Generator - Install

Serving Mendham, NJ and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"Roy is really a prof. He installed two overhead fans and a hanging lamp. The fans had a complicated control system but he was able to get them to work flawlessly. Bonus: he is really a nice person and he cleaned up too! I would recommend his work to anyone."
Response time2 hrs
Response rate93%
Recommended by90%of homeowners
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Avatar for Plesh Electric, LLC
Plesh Electric, LLC
4.4(
111
)
Fixed Generator - Install

Serving Mendham, NJ and surrounding areas

Approved

In business since 1972

Free estimates

Emergency services offered

"Plesh electric did a fantastic job installing our whole house generator. We don’t have natural gas so we had to also had to have a propane tank installed. They did a great job organizing with the propane company and managing the township permits. I highly recommend them."
Outdoor Closed Panel Upgraded
Residential Generator
Outdoor Open Panel Upgraded
Residential Generator
Upgraded Panel Closed

+19

Response time2 days
6 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Guardian Electric, LLC
Guardian Electric, LLC
4.9(
39
)
Fixed Generator - Install

Serving Mendham, NJ and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Chris called me back the day I called him. Once my lighting fixture arrived he showed up the next day and installed it. Rate was reasonable compared to other companies. I would use this company again and I would highly recommend them."
Electric Rough-In
New Ceiling Fan Installation
New Service Hook-Up
New Kitchen Renovation
New Switchboard Installation

+44

Response time9 hrs
2 neighbors recently requested a quote
Recommended by83%of homeowners
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Avatar for North Crest, LLC
North Crest, LLC
5.0(
51
)
Portable Generator - Install

Serving Mendham, NJ and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"Ken installed recessed lighting in my living room. He provided full explanation of the wiring necessary for the project as well as specific lighting options. Ken was very professional throughout the project - he showed up on time and took extraordinary care during installation and provided this service at a very fair price. I would highly recommend him for all your electrical needs!"
Response time11 hrs
Response rate91%
5 neighbors recently requested a quote
Request Quote
Avatar for MD Electrical Solutions, LLC
MD Electrical Solutions, LLC
4.9(
126
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Mendham, NJ and surrounding areas

Approved

In business since 2007

Free estimates

Small jobs welcome

"Neat and clean work. Installed ceiling fan."
Panel Swap - before
Panel Swap - After
Panel Swap - After
Kitchen fixtures
Kitchen fixtures

+21

Response time4 hrs
Response rate89%
Recommended by99%of homeowners
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Avatar for Anzalone Electric & Lighting, LLC
Anzalone Electric & Lighting, LLC
4.9(
110
)
Portable Generator - Install

Serving Mendham, NJ and surrounding areas

Approved

In business since 2008

Free estimates

Small jobs welcome

"Scott did an excellent job of installing and outdoor motion light and also a bathroom ceiling light. Everything was done neatly and efficiently."
Finished panel
Electric Tie in
installing breakers
The old mast
Response time8 hrs
8 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
Avatar for Hank's Electrical Contracting LLC
Hank's Electrical Contracting LLC
5.0(
40
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Mendham, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Henry did an amazing job installing my video door bell . He was very patient helping me set up the WiFi. I would definitely recommend him!"
Response time4 hrs
Response rate86%
3 neighbors recently requested a quote
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Showing 1-10 of 115
Generator Install questions, answered by experts

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house 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.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

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.

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

The Mendham, 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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