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Avatar for Trinity Generators & Electrical, Inc.
Trinity Generators & Electrical, Inc.
4.3(
28
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Pennsburg, PA and surrounding areas

Approved

In business since 2009

Emergency services offered

Customers say: True professional

"Last Monday, Nov. 3, I had some major surgery done on my GENERAC generator. It was time for "Super Maintenance" and your service man did a SUPER job! His name is Joe and he did a great job servicing my machine. He arrived on time and went right to work. He changed the oil and oil filter, put in a new battery, adjusted the valves, put in a new air filter, and even cleaned the top of the generator. All this while i looked over his shoulder and asked questions, lots of questions. I am impressed with Mr. Joe. He is very knowledgeable about your products, well spoken, and easy to talk to. It took him less than an hour to complete his work, despite my constant jabbering. He's a KEEPER! Thank You Trinity, And Thank You Joe! Paul O Weller Trinity Client"
Response time2 days
3 neighbors recently requested a quote
Recommended by66%of homeowners
John Gambino Electric
4.8(
252
)
Portable Generator - Install

Serving Pennsburg, PA and surrounding areas

Approved

In business since 1985

Free estimates

Credit card accepted

"So much YES!!! John called me back within one business day of my initial inquiry to give us a quote and explain the generator transfer switch install process. We set an appointment for which Bill showed up exactly on time. He was OUTSTANDING. He explained everything he was planning to do, answered our questions along the way, gave us status updates and even though our house wasnâ t the most cooperative, went above & beyond to put the transfer switch in a spot that was more challenging for him but more convenient for us. Top notch customer service. He walked us through how to work everything and simulated a power outage to ensure it was perfect. And it was. John Gambino Electric has new lifelong customers. Thanks John & Bill!!!"
Response time9 hrs
45 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for GenShield LLC
GenShield LLC
5.0(
6
)
Fixed Generator - Repair

Serving Pennsburg, PA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We specialize in generator service and repair and provide unmatched customer service! You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!\n

8 neighbors recently requested a quote
Avatar for Mister Sparky Electric
Mister Sparky Electric
4.4(
324
)
Fixed Generator - InstallPortable Generator - Install

Serving Pennsburg, PA and surrounding areas

Approved

Super Service Award Winner

In business since 1959

Free estimates

Emergency services offered

"Jason installed doorbells at 2 doors. There were no functioning doorbells when I purchased this house 5 years ago. Various contractors warned me of the difficulty and expense of hardwired installations, making me put off the project. Wireless doorbells were unreliable. I was encouraged by James, who did my annual electrical maintenance, and scheduled the work for me. Jason did a fantastic job by creative thinking to avoid the difficulties I'd previously been warned about. He did the job quickly, neatly, and very successfully. I am thrilled to have working doorbells for the first time in 5 years!"
 Office
  Office
  Office
238 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Revival Electric
Revival Electric
5.0(
7
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Pennsburg, PA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

Revival Electric is a locally owned and operated electrical company providing reliable, high-quality residential and light commercial electrical services. We specialize in electrical repairs, panel upgrades, lighting installations, generators, EV chargers, and whole-home electrical safety solutions. Our focus is simple: safe work, clear communication, and dependable service. We take pride in doing the job right the first time, educating homeowners along the way, and offering long-term solutionsnot quick fixes. Whether you need a small repair or a full electrical upgrade, our licensed electricians deliver professional results you can trust. We also offer preventative electrical safety inspections and service plans to protect your home

 Revival Electric
14 neighbors recently requested a quote
Avatar for Malachowski Construction & Excavation LLC
Malachowski Construction & Excavation LLC
5.0(
8
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Pennsburg, PA and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

We are a small company that can tackle any task. The owner is on every jobsite to make sure that the work is getting completed to his high standards. We like to be a one stop shop for our customers and help them with whatever their dream is.

Response time4 days
Response rate100%
8 neighbors recently requested a quote
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Generator Install questions, answered by experts

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

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. 

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.

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.

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

The Pennsburg, PA homeowners’ guide to generator installs

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