*The Angi rating for Generator Install companies in Mount Olive, IL 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 Mount Olive, IL 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 April 14, 2026
Serving Mount Olive, IL and surrounding areas
Approved
In business since 1993
Free estimates
Emergency services offered
"Larry explained the process. Made sure that we were aware of the requirements and the amount of time needed to complete the job."
+3
Serving Mount Olive, IL and surrounding areas
In business since 1993
Free estimates
"Fantastic ! Dan and his crew did an absolute professional job on my home. Work was excellent and completed ahead of schedule. His price was very competitive. They used the highest quality materials to ensure it lasted. I've used Miller Home Improvement on many jobs and recommended him many times. Feedback from the people I have referred him to has always been excellent. I will continue to work with them for all of my future home improvements."
Serving Mount Olive, IL and surrounding areas
In business since 1993
Emergency services offered
Warranties offered
"Technicians worked on two projects; electrical repair of a dawn to dusk light and the installation of a new toilet. The work was professionally assessed and completed. I would use the company for future repairs. However, I felt the cost of the electrical repair was a bit overpriced."
+27
Serving Mount Olive, IL and surrounding areas
In business since 2016
Free estimates
Emergency services offered
"He did great work for us, was great with time management, and all for a low price. I will definitely be using him again!"
+1
Serving Mount Olive, IL and surrounding areas
In business since 2000
Free estimates
"My husband and I were very pleased with Jason Kunz Electric, Jason was very prompt on giving us an estimate on a whole house generator and the follow through with the installation was very good also. We would definitely recommend Jason! Paul & Judy Struharik"
Serving Mount Olive, IL and surrounding areas
In business since 2010
Free estimates
Emergency services offered
"The team from Mormat were quick to setup and get started on the job. It was a cold day to be replacing the door so I was happy to see that they took the time to get as much of the prep work ready as they could before they began to take the existing door down. Once they got started they let us know what they would be doing, and they began the tear down. There was a lot of rotting wood around the old frame, and the walls were a mixture of the dry wall and weather worn cinder blocks. Everything was a mess, but kept the debris to a minimum which was great since we had to pass by the area several times while they worked to do chores while they worked. Overall the finished install was amazing for the door and I'm pretty sure it's the sturdiest structure in the house.
The electrical panel in my home was outdated and needed to be replaced as well which they assisted with. When we moved in we found that not only did the panel need to be replaced but we weren't quite sure what breaker went where. The team from Mormat took the time to not only replace the panel, but also to make sure I knew where everything went. I now have a clearly labeled panel, which makes things so much easier whenever I need to do work that I feel comfortable doing, safely.
I have had the experience to use their services for the company I work for, and it was great to see that the professionalism and detail they bring to an office space they also offer to their residential jobs. Given the broad range of skills I have seen their team employ, there will be no doubt that I will continue to use their services for any of my major projects in my new home."
Serving Mount Olive, IL and surrounding areas
In business since 2005
been doing this since 13 years old
Serving Mount Olive, IL and surrounding areas
In business since 1993
Free estimates
Emergency services offered
"They performed everything they said would do."
+3
Serving Mount Olive, IL and surrounding areas
In business since 2009
Free estimates
Credit card accepted
LOW RATES PROFFESIONALISM
Serving Mount Olive, IL and surrounding areas
In business since 2020
Free estimates
Emergency services offered
Big Patriot Home Remodeling 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.
When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.
Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:
Portable generators with 1kW–7.5kW capacity: $500–$2,000
Partial generators with 9kW–20kW capacity: $2,000–$6,300
Whole-house generators with 22kW–48kW: $5,000–$18,000
When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:
Refrigerator: 600 watts
Large dehumidifier: 700 watts
Large window air conditioner: 1,400 watts
Water heater: 3,000 watts
Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running.
Here’s what you can run with different wattages and types of generators:
Portable generator:
2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers.
4,000 watts will keep two large appliances operating and a few smaller devices.
8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.
Partial to whole-house generator:
20,000 watts and above will make it seem like your home’s power is still on.
The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:
Experience frequent or prolonged power outages
Work from home
Store a lot of cold food
Have a sump pump
Have a pump for well water
Use electronic medical devices
Live in a climate requiring heating or cooling
From average costs to expert advice, get all the answers you need to get your job done.
The cost to install a whole-house generator in St Louis, MO varies based on factors like generator size, fuel type, and installation complexity. Learn the typical price range and what influences your total cost.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
Generators should give you peace of mind, but you’ll only get that if your installer knows what they’re doing. Learn how to hire a pro and what red flags to look for.
Whole home generator installations require a professional hand. Read this guide to help you decide which generator is best for your home.
Wondering who to hire to install a generator? Consult this guide to learn who to hire to install a generator or a transfer switch.
