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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

"I had initially gotten a quote for the purchase and installation of my 22KW Generac generator from an electrician. He suggested contacting a Generac dealer to purchase and install my generator. Since I would have to contact a dealer if I had a problem with my generator after installation anyway, it seemed like a good idea. I got a quote from Trinity Generators which was substantially less than my previous quote. Getting the generator from Trinity was an easy choice. They did an outstanding job of installing the generator. Trinity handled all the paperwork and permits all the way to the final inspection of the installation. Trinity sent 4 technicians to install the generator. They started at 9am and finished right after lunch. The installation was fast and neat. They treated the installation as if my home was theirs. They removed all packing material and trash and left my home just as it was before they were there. I couldnâ t be more satisfied and happy with my decision to have them add a generator to my home. 5 Stars!!!!"
Response time2 days
3 neighbors recently requested a quote
Recommended by66%of homeowners
John Gambino Electric
4.8(
253
)
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
42 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for DM Electrical Services, LLC
DM Electrical Services, LLC
5.0(
36
)
Generator - Install - For Business

Serving Pennsburg, PA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"DM Ellectrical: * has good taste- provided beautiful chandelier & light fixtures. * does good work-neat, clean installations & repairs. * charges very reasonable prices-Offered us good advice as well. * is a nice, local, hard working, young guy-professional electrician. * Impressed me as being economy-minded- did a lot of quality work in a short time. * Replaced our 33 yr old:indoor outlets, Kitchen & dining room light fixtures, outdoor light fixtures and hard wired timers."
Response time3 hrs
1 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Pro Electrician S Corp
Pro Electrician S Corp
4.3(
224
)
Fixed Generator - Install

Serving Pennsburg, PA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"We had some outlets installed recently by the technician Carlos. Everything has been working great! Carlos is very personable. He took the time to explain the process and answered all of our questions. We will definitely be using the company again for future work!"
320A Electrical Service
320A Electrical Service
320A Electrical Service
320A Electrical Service
320A Electrical Service

+107

5 neighbors recently requested a quote
Recommended by72%of homeowners
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
96 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
19 neighbors recently requested a quote
Avatar for Mr. Electric of Reading
Mr. Electric of Reading
5.0(
22
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install - For Business

Serving Pennsburg, PA and surrounding areas

Approved

Free estimates

Emergency services offered

Credit card accepted

"Troy did an amazing job on several projects for us. He installed a 220 sub panel box and wired in a new hot tub. Additionally, he wired up our basement during a remodel, same as a new construction build. We hired him back on for the project due to the professionalism and fairness he brought with him on his first job with us. I’m a meticulous guy and picky about how my electrical work looks. Troy came in above and beyond of what I was expecting with his order of neatness and cleanliness when laying his lines. Everything had to be perfect for him and I feel he exceeded what my high expectations were already. I would certainly only consider him for whatever our next electrical project is."
Lighting Upgrade
Lighting Upgrade
Lighting Upgrade
Lighting Upgrade
Lighting Upgrade

+16

73 neighbors recently requested a quote
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Generator Install questions, answered by experts

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

You may need a permit for a portable generator if you’ll be installing a transfer switch for your primary residence or similar work. Otherwise, a permit for other uses may not be necessary. Check your local building codes or ask a local generator installer for more information about your local regulations.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

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.

Yes, installing a generator usually increases your property value because buyers are getting the added peace of mind knowing they’ll be able to maintain power through blackouts. In most cases, you should see close to a 100% return on investment (ROI). Keep in mind that home generators usually need a permanent foundation, and installing a concrete slab will likely raise your property taxes slightly.

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.