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Best generator install pros near Marengo, IA

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Top-Rated Generator install pros in Marengo - Updated Nov 2026

Avatar for WireOne
WireOne
4.2(
118
)
Fixed Generator - InstallPortable Generator - Install

Serving Marengo, IA and surrounding areas

Approved

In business since 2010

Credit card accepted

Customers say: Quality work

"Lane is a great technician! Very knowledgeable, friendly and courteous. Explained pricing options clearly and with no pressure. I would definitely request him for any future projects in my home."
Wireone Work
Wireone Work
Wireone Work
Wireone Work
Wireone Work

+5

Response time11 hrs
34 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for DOWN THE ROAD ELECTRIC INC
DOWN THE ROAD ELECTRIC INC
5.0(
19
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Marengo, IA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"Jesse is a very pleasant young man, fully trained and capable of any electric repair or installation. He came on time, did his work quickly and cleaned up after himself. I am very satisfied and will call "Down the Road Electric" again when the need arises. Rick Ruppert, retired Accountant and homeowner."
3 neighbors recently requested a quote
Recommended by63%of homeowners
Avatar for Jenson Electric, LLC.
Jenson Electric, LLC.
4.4(
7
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Marengo, IA and surrounding areas

In business since 2015

Free estimates

Emergency services offered

Jenson Electric is a full-service electrical contractor providing versatile solutions across residential, commercial, industrial, and telecommunications sectors. Based in Johnston, IA, we design, install, and maintain electrical systems that power people, facilities, and networks?safely, efficiently, and with minimal disruption. Our team combines ~licensed electricians, project managers, and field engineers~ to deliver projects on time, on budget, and in full compliance with applicable codes. We prioritize safety, quality, and minimal disruption to occupants and operations. \n

Response time3 days
Response rate100%
Donovan Electric, LLC
5.0(
4
)
Fixed Generator - Install

Serving Marengo, IA and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"Had estimate done by ?Wire One? first and it was a pressure/upsell attempt nightmare. Price quoted was an incredible attempt at gouging a retired couple?will never allow them in my home again. Contacted Donovan Electric, work was done within two days at an exceptionally reasonable price. No non-sense, no gouging, just simple professional work done by decent people. Do yourself a favor, hire these guys, not some big corporate entity that?s out to take you to the cleaners."
Response time4 days
Recommended by25%of homeowners
Trey Electric, Corp.
New to Angi
Generator - Install - For BusinessGenerator - Repair - For Business

Serving Marengo, IA and surrounding areas

In business since 2001

Free estimates

Offers commercial services

Welcome to Trey Electric. Our depth of knowledge and experience solidify our belief that customer service stands as the highest priority. We eagerly look forward to working with you and making your vision a reality. Give us a call, text or email today, and let us get started!

Response time4 hrs
Mr. Electric of Iowa City- Cedar Rapids
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Marengo, IA and surrounding areas

In business since 2023

Free estimates

Emergency services offered

Here at Mr. Electric of Iowa City - Cedar Rapids, we have the power to make things better. Call us today for electrical repair near you, and we’ll make sure the electrical components at your property are up to code. We perform electrical inspections Johnson and Linn County can trust, free of charge!

Mr. Electric Service Professional by the Van
Mr. Electric Tool Mat
Mr. Electric Service Professional Shaking Hands
Avatar for Cannon Solar
Cannon Solar
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Marengo, IA and surrounding areas

In business since 2023

Free estimates

Credit card accepted

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. \n

Response time9 hrs
Response rate100%
Generator Install FAQs, answered by experts

Portable generators provide backup power for essential appliances during outages and are easy to relocate.

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

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.

If you’re wondering if you can use your electric vehicle as a backup battery, it depends on whether your EV is compatible with bidirectional charging. This technology allows energy to flow both ways, enabling vehicle-to-home (V2H) backup power, vehicle-to-load (V2L) for appliances and camping, and vehicle-to-grid (V2G) to support the power grid. Compatible EVs convert stored DC energy into usable AC power, helping reduce energy costs and enhance grid stability while providing emergency backup power.

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 Marengo, IA homeowners’ guide to generator installs

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