Top-rated generator install pros.

Get matched with top generator install pros in Williamsburg, PA

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Williamsburg, PA?

Select your specific project to find the pro for you.

Verified Reviews for Generator Install pros in Williamsburg, PA

*The Angi rating for Generator Install companies in Williamsburg, PA 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 Williamsburg, PA 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 May 26, 2026

Find Generator install pros in Williamsburg

Avatar for Hurricane Home Solutions Southern Tier, Inc.
Hurricane Home Solutions Southern Tier, Inc.
4.6(
200
)

Serving Williamsburg, PA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Office staff was super helpful in getting this generator installed. And, on the day of installation, the technicians never took a break. At the same time, were very accommodating and and answered our questions fully. Great install. I would (and have) recommend Hurricane Homes."
Cummins Logo
Generac Logo
Champion Power Equipment Logo
13kW Cummins Unit
Reverse Angle

+9

Response time1 day
Response rate97%
8 neighbors recently requested a quote
Request Quote
Avatar for Hurricane Home Solutions Southern Tier, Inc
Hurricane Home Solutions Southern Tier, Inc
4.6(
207
)

Serving Williamsburg, PA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Office staff was super helpful in getting this generator installed. And, on the day of installation, the technicians never took a break. At the same time, were very accommodating and and answered our questions fully. Great install. I would (and have) recommend Hurricane Homes."
Champion Logo
8.5kW Champion Side
8.5kW Champion Front
Champion Automatic Transfer Switch
Generac Logo

+9

Response time1 day
Response rate95%
17 neighbors recently requested a quote
Request Quote
Avatar for Selepack Electric LLC
Selepack Electric LLC
5.0(
1
)

Serving Williamsburg, PA and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

10 years of experience, focused on troubleshooting, design and install. No job to big or small, we have worked anywhere from homes to industrial facilities. We offer a few options for standby generators as well. I look forward to working with you!

Request Quote
Avatar for Outdoor Motivation
Outdoor Motivation
5.0(
4
)

Serving Williamsburg, PA and surrounding areas

In business since 2010

Free estimates

Credit card accepted

Covid 19 update\nPlease contact Travis at 814-660-1434\nOutdoor Motivation is your number one outdoor expert in East Freedom! Our passion and experience shine through on every job, big or small. We pride ourselves on attention to detail and building long-lasting business relationships with our clients. Call or text your ideas today for a free estimate!

1
2
3
4
5

+1

Response time2 days
Recommended by100%of homeowners
Request Quote
Avatar for W&B Electrical LLC
W&B Electrical LLC
5.0(
4
)

Serving Williamsburg, PA and surrounding areas

In business since 2025

Free estimates

Emergency services offered

"Hired them to install outlets all throughout my garage, they completed the work in a timely fashion and very professionally. Definitely will use them for all my future electrical needs"
Donny basement rough in
Donny basement rough in
Donny basement rough in
Donny basement rough in
Donny basement rough in

+6

Response time8 hrs
Response rate92%
Request Quote
Newtown Heating & Air Conditioning Inc
3.6(
24
)

Serving Williamsburg, PA and surrounding areas

In business since 1994

Emergency services offered

Credit card accepted

"Don and his crew at Newtown Heating and Air were terrific.
Their quote for the job was fair and reasonable.
We had gotten estimates from other companies for more costly units.
Don explained why a smaller unit would work for us, saving us thousands of dollars.
When small modifications were needed, he stuck by his quote , which you rarely see in this field. Strong integrity.
They took steps to protect the cleanliness of our house, when work was required inside..
His group of co-workers were friendly and efficient.
They took the time to test the unit and make sure we were educated on its features and usage
All in all it was an A+ experience from start to finish and I would HIGHLY RECOMMEND them!"
Recommended by77%of homeowners
Request Quote
Showing 1-10 of 22
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.

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

Yes, in most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home models. Because these installations involve significant alterations to your home's electrical system and produce exhaust fumes, local governments often require a permit or inspection for safety purposes. A generator permit typically costs between $50 and $250, depending on your location. Your electrician or certified installer can usually handle the permitting process for you, but you will be responsible for the cost. It's a good practice to confirm with your installer that they will pull all necessary permits before work begins.

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.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

The Williamsburg, PA homeowners’ guide to generator installs

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

See all articles