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Find Generator install pros in Downingtown

Avatar for Synergy Power Systems, Inc.
Synergy Power Systems, Inc.
5.0(
10
)
Generator - Install - For Business

Serving Downingtown, PA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"My mother used this company for her generator installation and recommended them to me because she loved them so much. I also ended up hiring them. All went well as expected, start to finish the crew as awesome. No regrets."
Reading Area
Chester County
Denver Pa
Generator Installed
Generac Generator Installed

+10

Response time1 day
Recommended by100%of homeowners
John Gambino Electric
4.8(
253
)
Portable Generator - Install

Serving Downingtown, 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
50 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Mister Sparky Electric
Mister Sparky Electric
4.4(
324
)
Fixed Generator - InstallPortable Generator - Install

Serving Downingtown, 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
138 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for A&M Electric LLC
A&M Electric LLC
5.0(
5
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Repair+3 more

Serving Downingtown, PA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

A&M Electric LLC is a veteran-owned, Christian-based electrical contractor proudly serving Lancaster County and surrounding Central Pennsylvania communities with reliable residential, commercial, agricultural, and industrial electrical services. We specialize in electrical panel upgrades, 200 amp service upgrades, EV charger installation, generator installation, electrical troubleshooting, lighting installation, rewiring, new construction wiring, remodels, emergency electrical repairs, and commercial electrical services. Our licensed electricians provide safe, code-compliant, and high-quality electrical work for homeowners, businesses, farms, warehouses, offices, retail spaces, and construction projects throughout Lancaster County and Central Pennsylvania from our base in Ephrata, PA. Also serves Reading, Lancaster, York, the greater Harrisburg and Philadelphia areas, Mohnton, Coatesville, Landale, Montgomery County, Hatfield, King of Prussia, and Bryn Mawr.

Project Photos
Project Photos
Project Photos
Project Photos
Project Photos

+35

45 neighbors recently requested a quote
Avatar for Craig Service Group
Craig Service Group
4.8(
22
)
Fixed Generator - Install

Serving Downingtown, PA and surrounding areas

Approved

In business since 2015

Emergency services offered

Warranties offered

Craig Service Group specializes in mechanical, electrical, and plumbing installation, repair, and maintenance. Serving residential, commercial, and industrial customers across Southeastern Pennsylvania and New Jersey, we bring decades of hands-on experience to every job.\n\nAs a fully licensed, bonded, and insured business, we treat your property as if it were our own, delivering top-quality workmanship and the personalized attention only a family-run business can provide. At Craig Service Group, our commitment to doing what’s right, standing by our clients, and building lasting relationships is at the heart of everything we do.

HVAC
HVAC
HVAC
HVAC
HVAC

+3

7 neighbors recently requested a quote
Recommended by72%of homeowners
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Generator Install questions, answered by experts

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.

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

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.

Potential benefits of using a natural gas generator include reducing your carbon footprint, lower likelihood of carbon monoxide exposure, budget-friendly operating costs, and low-maintenance, continuous fuel supply. Some possible drawbacks, though, include higher initial installation costs, dependency on a natural gas supply, and installation complexity. Keep in mind that pros and cons will vary based on the type and brand of natural gas 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 Downingtown, PA homeowners’ guide to generator installs

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