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Avatar for LiveWire Power Solutions, LLC
LiveWire Power Solutions, LLC
5.0(
2
)
Fixed Generator - InstallFixed Generator - Repair

Serving Columbus, PA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Zack was very good at installing a ceiling fan in our bedroom and fixing the light and fan switch in the other bedroom. He went and bought us a new fan at Lowe's and brought it back and installed it. He was personable and very easy to work with. I would highly recommend his work."
11 neighbors recently requested a quote
Avatar for Gravatt Glass & Electric
Gravatt Glass & Electric
5.0(
50
)
Fixed Generator - Install

Serving Columbus, PA and surrounding areas

In business since 1998

Free estimates

Emergency services offered

"Gary came on Saturday to repair our generator. He was excellent on his knowledge of Generac generators. We really are impressed by his excellent work quality. Very thankful to him for coming on his off hours."
20 kw Generator - Pitts.
 14 kw Generator - Pitts.
 Customer with 8kW - Butler, PA
 20 kw - Conway, PA
 Our Work Van

+8

Recommended by100%of homeowners
Avatar for Shalkham Electric & Construction Co.
Shalkham Electric & Construction Co.
5.0(
8
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Columbus, PA and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"I recently hired Shalkham Electric & Construction for electrical work at my home, and I am extremely pleased with the entire experience. The owner, Matthew, was absolutely amazing—very friendly, professional, and easy to work with. From the first conversation to the completion of the project, he made sure everything was explained clearly and that all my questions were answered. Matthew and his team are highly knowledgeable and take great pride in their work. The quality of the electrical work was excellent, and their attention to detail was impressive. They completed the job efficiently, kept the work area clean, and made sure everything was done safely and correctly. Their customer service was outstanding throughout the entire process. It’s refreshing to work with a company that truly cares about its customers and stands behind its work. On top of that, their pricing was very fair and affordable, providing excellent value for the quality of service received. Highly Recommend!!!"
Electric service upgrade
Electric service upgrade
Electric service upgrade
Electric service upgrade
Avatar for H&L Precision Services
H&L Precision Services
4.5(
21
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Columbus, PA and surrounding areas

In business since 2013

Free estimates

Emergency services offered

"Prompt, professional and very knowledgeable. Fixed a problem we had with our Bose home theater even though it was originally installed by Bose technicians (found that it was not installed properly) Also installed a Visio smart TV. Everything works perfectly. Very happy with the service."
 3 phase hydraulic pump install
 So you don't like Windows 8?
 Old #8 wire at the controls
 TV Mount with level
 The old heavy fixture

+31

Recommended by100%of homeowners
Avatar for Advanced Installation Group
Advanced Installation Group
New to Angi
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Columbus, PA and surrounding areas

In business since 2020

Free estimates

Emergency services offered

Advanced Installation Group is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time2 days
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Generator Install questions, answered by experts

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

These advanced generators use a key fob or a smartphone app to remotely start, which is ideal for getting power back on immediately without venturing outside. This feature is more common on whole home generators, but you may be able to find it on large portable generators, too.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

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.

The Columbus, PA homeowners’ guide to generator installs

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