Get matched with top generator installers in O Fallon, IL
There are 1 highly-rated local generator installers.
Verified Reviews for Generator Installation pros in O Fallon, IL
*The Angi rating for Generator Installation companies in O Fallon, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.
*The HomeAdvisor rating for Generator Installation companies in O Fallon, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.
Last update on April 27, 2025
Generator installers in O Fallon
We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game. We provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.
We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game. We provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.
Jarvis electric is a local family owned and operated business. We take pride in performing quality electric work at a reasonable price. We have over twenty years of experience in the electrical field. Honesty and integrity are two qualities we believe help to build a successful business. At Jarvis Electric we are building relationships, one job at a time. Update: We are currently not servicing East St. Louis.
"Jarvis Electric did all of the electric for our new build and has come back to add additional items that we have added since we have been in the home. Super responsive and quick to complete all requested work. Top notch service. Extremely reasonable price. I appreciate that they always keep a clean worksite and never leave a mess, even if coming back the next day to finish a job. I have not only used them for my home but referred them to my mom and dad as well when they needed work done. Great company with great people and really easy to deal with. They truly went above and beyond."
Keith J on June 2023
Jarvis electric is a local family owned and operated business. We take pride in performing quality electric work at a reasonable price. We have over twenty years of experience in the electrical field. Honesty and integrity are two qualities we believe help to build a successful business. At Jarvis Electric we are building relationships, one job at a time. Update: We are currently not servicing East St. Louis.
"Jarvis Electric did all of the electric for our new build and has come back to add additional items that we have added since we have been in the home. Super responsive and quick to complete all requested work. Top notch service. Extremely reasonable price. I appreciate that they always keep a clean worksite and never leave a mess, even if coming back the next day to finish a job. I have not only used them for my home but referred them to my mom and dad as well when they needed work done. Great company with great people and really easy to deal with. They truly went above and beyond."
Keith J on June 2023
CD Electric is a local, family-owned electrcial contractor that specializes in service, repair, and new construction in the residential and commercial setting. We go above and beyond with all our jobs because that’s our duty to our customer. Our aim is to give customers consistent and reliable service that they can trust. From the time we answer the phone to the completion of the job we are committing to give our customers the best experience.
"Showed up and finished the job no issues."
Bretton M on April 2025
CD Electric is a local, family-owned electrcial contractor that specializes in service, repair, and new construction in the residential and commercial setting. We go above and beyond with all our jobs because that’s our duty to our customer. Our aim is to give customers consistent and reliable service that they can trust. From the time we answer the phone to the completion of the job we are committing to give our customers the best experience.
"Showed up and finished the job no issues."
Bretton M on April 2025
Tiger Plumbing, Heating, Air Conditioning, & Electrical Services takes pride in being your preferred local plumbers, electricians, and HVAC technicians! In fact, more homeowners in the St. Louis Metro East & Central Illinois communities we serve, say they would call us again before any other plumbing, electrical, heating, or air conditioning service!
"Ill keep this as short as i can, which isn't short given the multitude of screw ups on Tigers part. Overall the turn time was good and setting the appointment was easy, however the experience left ALOT to be desired. The initial person who took my call did not properly record the issue as described resulting in the first tech being unprepared to resolve the issue and a subsequent visit from an advisor. The advisor drew up several service offerings and made a few recommendations for upgrades and enhancements to our existing system, including pointing out a possible safety issue. As part of that she made mention that they would have to remove a small portion of dry wall in the upstairs laundry closet to complete the flexible duct work which we agreed to. She scheduled the appointment for the work to be completed monday (it could have been done friday had the first call taker properly recorded the issue). The technician that showed up on monday was friendly enough however was unprepared to complete the work. Instead of a small hole in my laundry closet the duct work resulted in a hole in my kitchen ceiling spanning half the width of the kitchen, way more intrusive than what the advisor had set us up for. The technician also asked for my assistance multiple times, including to help pull duct work, which if im paying for a service, why do i have to help perform the service? The technician was also unprepared to clean up after himself as he needed to borrow my shop vac, paper towels, and cleaning spray. I guess his shop vac had been damaged on a previous job (again why am i paying you?). The technician also failed to perform all of the work that was paid for days in advance, more specifically they did not cap off the open flue from an old furnace which is a service that had been prepaid with the advisor. When asked about this the technician said he did not have the part, but if he came across one would "drop it off". After realizing this tiger was called requesting a refund for the unperformed work, at which point we were told "it could take up to a week for the supervisor to contact you to process that". Really? Your supervisors are too busy to ensure customer satisfaction in a timely manner, but you sure can come take someones money in less than 48 hours no problem.... I would not recommend them to anyone and definitely will not be using them again for anything. Attached is a picture of the small hole i was told would be left in my laundry closet. Please not that by laundry closet it ended up being kitchen ceiling, and by small hole, it was halfway across the kitchen."
Kristopher H on September 2020
Tiger Plumbing, Heating, Air Conditioning, & Electrical Services takes pride in being your preferred local plumbers, electricians, and HVAC technicians! In fact, more homeowners in the St. Louis Metro East & Central Illinois communities we serve, say they would call us again before any other plumbing, electrical, heating, or air conditioning service!
"Ill keep this as short as i can, which isn't short given the multitude of screw ups on Tigers part. Overall the turn time was good and setting the appointment was easy, however the experience left ALOT to be desired. The initial person who took my call did not properly record the issue as described resulting in the first tech being unprepared to resolve the issue and a subsequent visit from an advisor. The advisor drew up several service offerings and made a few recommendations for upgrades and enhancements to our existing system, including pointing out a possible safety issue. As part of that she made mention that they would have to remove a small portion of dry wall in the upstairs laundry closet to complete the flexible duct work which we agreed to. She scheduled the appointment for the work to be completed monday (it could have been done friday had the first call taker properly recorded the issue). The technician that showed up on monday was friendly enough however was unprepared to complete the work. Instead of a small hole in my laundry closet the duct work resulted in a hole in my kitchen ceiling spanning half the width of the kitchen, way more intrusive than what the advisor had set us up for. The technician also asked for my assistance multiple times, including to help pull duct work, which if im paying for a service, why do i have to help perform the service? The technician was also unprepared to clean up after himself as he needed to borrow my shop vac, paper towels, and cleaning spray. I guess his shop vac had been damaged on a previous job (again why am i paying you?). The technician also failed to perform all of the work that was paid for days in advance, more specifically they did not cap off the open flue from an old furnace which is a service that had been prepaid with the advisor. When asked about this the technician said he did not have the part, but if he came across one would "drop it off". After realizing this tiger was called requesting a refund for the unperformed work, at which point we were told "it could take up to a week for the supervisor to contact you to process that". Really? Your supervisors are too busy to ensure customer satisfaction in a timely manner, but you sure can come take someones money in less than 48 hours no problem.... I would not recommend them to anyone and definitely will not be using them again for anything. Attached is a picture of the small hole i was told would be left in my laundry closet. Please not that by laundry closet it ended up being kitchen ceiling, and by small hole, it was halfway across the kitchen."
Kristopher H on September 2020
We are extremely passionate about the work that we do. You can depend on us to provide a high quality service at a fair and honest price. We understand that the future of our business depends upon our reputation and that is why customer service is by far our highest priority. If you are looking for a professional you can trust, please call today to schedule a no-obligation estimate!
We are extremely passionate about the work that we do. You can depend on us to provide a high quality service at a fair and honest price. We understand that the future of our business depends upon our reputation and that is why customer service is by far our highest priority. If you are looking for a professional you can trust, please call today to schedule a no-obligation estimate!
At C&R Communications, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
"showed up on time stayed until got everything figured out and installed"
Dave b on July 2023
At C&R Communications, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
"showed up on time stayed until got everything figured out and installed"
Dave b on July 2023
Our Company provides a one-stop solution for all of your voice, internet, and telecom needs. Leveraging the Cloud we provide your Office state-of-the-art telephones for little or no upfront cost striving to keep your monthly costs the same. Sound too good to be true? Give us a call and we will show you how.
"Joe, Mark, and Their Team did a Splendid Job for Us on this Business Phone Line Install. There are Very Knowledgeable and provided the Needed Assessment and "Fix" in a Very Timely Manner. I Highly Recommend Accent Tel USA! God Bless You! Philippians 1:3-6! Have a Wonderful Day in the Neighborhood & "Stay on the Nice List"! :)"
Buck B on August 2024
Our Company provides a one-stop solution for all of your voice, internet, and telecom needs. Leveraging the Cloud we provide your Office state-of-the-art telephones for little or no upfront cost striving to keep your monthly costs the same. Sound too good to be true? Give us a call and we will show you how.
"Joe, Mark, and Their Team did a Splendid Job for Us on this Business Phone Line Install. There are Very Knowledgeable and provided the Needed Assessment and "Fix" in a Very Timely Manner. I Highly Recommend Accent Tel USA! God Bless You! Philippians 1:3-6! Have a Wonderful Day in the Neighborhood & "Stay on the Nice List"! :)"
Buck B on August 2024
Jarvis Electrical Contracting, Inc. has over a decade of experience with new home electric services, commercial building electric services, installation of upgrades and maintenance, industrial applications, solar energy installations and lighting upgrade applications. We are dedicated to providing you with all electrical solutions to make your home comfortable, efficient, and updated. We have the skills to complete unique installations and troubleshoot the most complex situation. We are a small company that allows competitive pricing with outstanding results. W e will focus on all customers unique needs one job at a time. We want to build lasting relationships with trust and confidence so that Jarvis Electrical Contracting, Inc . will be your electrical contractor for life.
"Na"
Phyllis S on April 2025
Jarvis Electrical Contracting, Inc. has over a decade of experience with new home electric services, commercial building electric services, installation of upgrades and maintenance, industrial applications, solar energy installations and lighting upgrade applications. We are dedicated to providing you with all electrical solutions to make your home comfortable, efficient, and updated. We have the skills to complete unique installations and troubleshoot the most complex situation. We are a small company that allows competitive pricing with outstanding results. W e will focus on all customers unique needs one job at a time. We want to build lasting relationships with trust and confidence so that Jarvis Electrical Contracting, Inc . will be your electrical contractor for life.
"Na"
Phyllis S on April 2025
SOHO Solutions is committed to excellence 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
"Excellent work and excellent rate. Will use again in a few weeks."
Leroy G on March 2022
SOHO Solutions is committed to excellence 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
"Excellent work and excellent rate. Will use again in a few weeks."
Leroy G on March 2022
At Green Leaf Renewables, we've been making a big impact since 2019, delivering top-notch renewable energy solutions at prices you can afford. Join the many satisfied property owners in Metro East IL who've trusted us with their energy needs. Let's work together to make a positive impact on your home, the economy, society, and our planet. Explore our Solar packages designed for both new constructions and existing homes.
At Green Leaf Renewables, we've been making a big impact since 2019, delivering top-notch renewable energy solutions at prices you can afford. Join the many satisfied property owners in Metro East IL who've trusted us with their energy needs. Let's work together to make a positive impact on your home, the economy, society, and our planet. Explore our Solar packages designed for both new constructions and existing homes.
Generator installations FAQs
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 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.
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
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