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Last update on May 10, 2026

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Avatar for Midwest Electric and Generator, Inc.
Midwest Electric and Generator, Inc.
4.1(
325
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Montevideo, MN and surrounding areas

In business since 2004

Free estimates

Emergency services offered

"The project was done within 3+ hours and everything was perfect. I'd recommend Midwest Electric and Generator, Inc. to others."
Health Club: New Pool Area
New Custom Home: Main House
Crew
Commerical Generator Install
Generac Guardian Series 20kw

+108

Recommended by74%of homeowners
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Mitlyng Electric & Refrigeration
1.0(
1
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Montevideo, MN and surrounding areas

In business since 1984

Free estimates

Emergency services offered

Mitlyng Electric, HVAC & Refrigeration was founded in 1984 in Montevideo, MN, where we continue to reside. We primarily serve customers in West Central Minnesota, but have worked with clients as far away as Texas. We serve both individuals and commercial entities of any size. No job is too big or small! At Mitlyng, your satisfaction is our top concern. Our roots in small town Minnesota bring with them friendliness and respect that we integrate into every interaction. Whatever your problem or concern may be, we hope to address it in a professional, respectful, and cost-effective manner. Mitlyng Electric, HVAC & Refrigeration provides a combination of customer service and quality products to make any business or homeowner comfortable and confident with their electric, heating, and cooling systems.

Completed Panel
In progress wiring
Furnace
Furnace Wires Chewed
Response time5 hrs
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Generator Install questions, answered by experts

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

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.

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

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.

The Montevideo, MN 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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