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Top-Rated Generator install pros in Saint Francis - Updated Nov 2026

Schrader Electric & Control
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Saint Francis, SD and surrounding areas

In business since 1985

Free estimates

Credit card accepted

Schrader Electric & Control is your trusted electric company serving the Winner, SD and surrounding areas. We have many years of experience and do high quality work. We are prompt, professional and reliable with an emphasis on excellent customer service. \n \nCall us today! \n

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P.Hein Electric
New to Angi
Generator - Install - For BusinessGenerator - Repair - For Business

Serving Saint Francis, SD and surrounding areas

In business since 1973

Free estimates

Credit card accepted

P.Hein Electric is an electrical service company owned by Patrick Hein, who grew up in Winner and graduated from Winner High School in 1988. He left home after graduating and joined the Army to get some training and funding for school. He was given several months of electronics theory and repair in Ft. Gordon, Ga. After graduating from training, he became an Electronics and Telecommunications technician. During his tours he received three Army Achievement Medals for his hard work and ability to solve workshop problems. He even developed a test for equipment repair and single-handedly brought his unit to 100% operational, which had never been done before.

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Generator Install FAQs, 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.

In many cases, yes. There are models called dual-fuel generators and fuel switches, but only between certain types of fuel. For example, with the right setup you can convert a generator from natural gas to propane. Some allow switching between diesel and gasoline. There are even tri-fuel generators available in some cases, which adds a large layer of security if you are worried about fuel availability in times of crisis. Always check your generator capabilities and manual instructions before trying to switch fuels. Some generators can use another fuel but may need a fuel conversion kit to prep them first.

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.

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.

Many services include assembling the unit and securing it in the window. Confirm with your provider.

The Saint Francis, SD homeowners’ guide to generator installs

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

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