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Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
5.0(
5
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Roanoke, IL and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game.\nWe provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.

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+3

42 neighbors recently requested a quote
Avatar for JMC Electric
JMC Electric
4.6(
10
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Roanoke, IL and surrounding areas

In business since 2013

Free estimates

Emergency services offered

"First of all, Manny was on time and as polite in person as over the phone. Manny worked very conscientiously from the start to the finish of both of my projects. He takes doing a good job seriously and is very efficient. I am fully comfortable with giving his name and number out to friends and family. I've already given it to my employer. In the future, I plan on calling them for all electrical needs. The price compared well with others in the area."
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+8

Response time30 mins
Recommended by77%of homeowners
Midwest Equipment
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Roanoke, IL and surrounding areas

In business since 1988

Free estimates

Welcome to Midwest Equipment. The largest Generac Generator dealer in Central Illinois. We specialize in customer satisfaction. With our factory trained staff and technicians, let the experts at Midwest Equipment help you with all your outdoor power needs. \n\nMidwest Equipment sells and services most brands of equipment. Ferris, Stihl, Honda, Toro, Generac, Husqvarna, Wright and Grasshopper, plus many others. Stop by one of our conveniently located stores in Peoria, Normal or our newest location in Metamora. \n

Quality Electric And Solar LLC
New to Angi
Portable Generator - Install

Serving Roanoke, IL and surrounding areas

In business since 2010

Free estimates

Emergency services offered

We can take on a wide range of residential and commercial electrical projects to include full installation for additions and remodels as well as wiring/panel upgrades, and a variety of other projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

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Generator Install questions, answered by experts

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

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.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

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.

The Roanoke, IL homeowners’ guide to generator installs

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