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*The Angi rating for Generator Install companies in Winona, MS is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Winona, MS is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on December 03, 2025

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Avatar for Climate Guard LLC
Climate Guard LLC
4.8(
10
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business+1 more

Serving Winona, MS and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"So excited about my AC system that the company installed was very professional explain everything perfectly and also had excellent financing that kept me around affordable payment"
Generator Project
Alarms Project
Alarms Project
Response time1 day
Response rate100%
32 neighbors recently requested a quote
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Avatar for Ultimate Construction Pros, LLC
Ultimate Construction Pros, LLC
5.0(
8
)
Fixed Generator - InstallPortable Generator - Install

Serving Winona, MS and surrounding areas

In business since 2012

Free estimates

Small jobs welcome

"The construction business did an outstanding job from start to finish. Their team was professional, and highly skilled. The quality of their work exceeded my expectations, and they paid great attention to every detail. Communication was clear and consistent throughout the project, making the whole process smooth and stress free. I highly recommend them to anyone looking for reliable and top notch construction services."
Remold
Remold
Remold
Remold
Remold

+23

24 neighbors recently requested a quote
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Avatar for The Home Depot - Generators
The Home Depot - Generators
2.5(
1
)
Fixed Generator - Install

Serving Winona, MS and surrounding areas

In business since 2003

Free estimates

Small jobs welcome

Today, we're proud to be the world's largest home improvement retailer. In 2,300 stores across North America, we aspire to excel in service – to our customers, associates, communities and shareholders. That's what leadership means to us. That's The Home Depot difference.

Generators
Generators
Generators
Generator
Generators

+5

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Generator Install questions, answered by experts

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.

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 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.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

The Winona, MS 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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