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Avatar for Custom Electrical Services, LLC
Custom Electrical Services, LLC
4.5(
95
)
Fixed Generator - Install

Serving Marengo, IA and surrounding areas

Approved

In business since 2005

Emergency services offered

Warranties offered

"Eric Fierro did all I expected and more. He arrived on time and was patient as I was helping someone at a sale. He did his estimate and then performed the work. He was conversive, attentive, and informative all while continuing to work. When finished, other than the new outlets and ground wire one would not have known he was there. When finished the the charge for the service was what he estimated. I could not have gone better. Thanks to Eric and Custom Electric Services."
Ceiling fan and cans
Commercial Service
Electric garage heater.
LED lighting Commercial
Generator Installation

+33

Response time12 hrs
Response rate88%
Recommended by91%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 questions, answered by experts

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.

While natural gas generators are costly, they’re a great option for standby power due to the reliability of natural gas as a fuel source. Unlike other fuels, natural gas is delivered through underground pipes, making outages extremely rare and less likely to be affected by the elements. As long as the area isn’t prone to earthquakes, they offer an unlimited supply of natural gas that doesn’t degrade over time or require storage in tanks.

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 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.

Most homeowners won't be able to claim a home generator as a tax write-off. However, a whole-house generator may be tax-deductible in certain situations depending on its purpose. For instance, if it's needed to power essential medical equipment, it may qualify as a medical expense deduction. Also, in some cases, businesses can deduct a generator as a business expense if it supports operations. Always consult a tax professional to determine eligibility based on your specific circumstances and the applicable IRS regulations.

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.