*The Angi rating for Generator Install companies in Imperial, MO 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 Imperial, MO 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 June 02, 2025
Serving Imperial, MO and surrounding areas
Approved
In business since 1976
Free estimates
Emergency services offered
"Very quick and courtious installers. They answered my questions even on other projects they were not working on at the time."
Serving Imperial, MO and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"Streib was extremely professional, courteous, patient, and friendly throughout the entire process. They did a great job with the installation - the city inspector was impressed by their work. Additionally, everyone I interacted with was just so nice. It made for a very pleasant and stress-free experience."
+7
Serving Imperial, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Emergency services offered
"Installed a wall mount and large tv Great job. Knew what he was doing"
+60
Serving Imperial, MO and surrounding areas
Approved
In business since 2017
Free estimates
Credit card accepted
"I hired N3 Electrical to replace my main electrical service panel, install a lock out switch for an emergency generator and run a new circuit to my patio. All the agreed upon work was completed on time and on budget. I was very pleased with the work I will definitely use this company again highly recommend."
+32
Serving Imperial, MO and surrounding areas
Approved
In business since 1993
Free estimates
Emergency services offered
"Installed a back-up sump pump. Great job! Thank you!"
+3
Serving Imperial, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2011
Free estimates
Emergency services offered
"Hired “Power Up” to refit our electrical panel and install an outside connecting plug to run a new portable electric generator. Jeff came out and spent time to evaluate and discuss our needs. He was consultative throughout the whole process. Lisa was responsible for arranging installation and paperwork and was very responsive to inquiries as well as reaching out to confirm things were moving forward. Justin was our installer and he knew his stuff. Very friendly and completed the work on time and as expected. Great experience working with “Power Up.”"
Serving Imperial, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Emergency services offered
Warranties offered
"Joe was more than amazing. He was informative and very knowledgeable. He was a super nice guy and stayed way longer than I expected him to (on a Sunday) , but he told me he wasn't going until he had everything done for my power to be turned back on. I was not just impressed by him as a person and his knowledge, but by his work and work ethics. My old breaker box had wires crossed all over the place. When he was finished, my new one had every wire going straight down and over to the breakers; nothing crossed or twisted. I would not only highly recommend Mr. Electric, but I would recommend Joe! (No offense to the other employees) Totally satisfied and grateful for the service I got as our neighborhood was recovering from a tornado that Friday."
+13
Serving Imperial, MO and surrounding areas
Approved
In business since 1971
Free estimates
Emergency services offered
"Seamus Donohue was a man who knew his subject - lightning. He came to our home quickly, and scheduled installation immediately after we made a decision. The men who came to do the installation were professional, careful and took time to make sure the results were as "invisible" as possible. We hope never to have a lightning strike again at our home, but as the weather patterns change, we fear that is more possible than in the past. We feel more protected after our lightning protection installation. But you never know how successful something is if the proof is in something never happening! But we'll take it."
+10
Serving Imperial, MO and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"Needed a sub panel and my entire garage wired(7 120 outlets, 2 240 outlets, and a floodlight put in). They showed up gave a quick run threw and they knocked it out Whole process was quick and easy. Great work at a great price! Would definitely recommend!"
Serving Imperial, MO and surrounding areas
Approved
In business since 1989
Free estimates
Emergency services offered
Looking for a reliable electrician near you? Time and again, locals and businesses choose Brda electrical contractors for our high-quality workmanship and outstanding service. Check out the samples of our work included in our photo albums. We are fully staffed and prepared to handle all manner of commercial and residential services!
+61
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.
Natural gas generators are whole-home standby generators that are connected to your home’s natural gas line. The average cost for a natural gas generator is $12,000.
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.
Natural gas generators can tap into existing gas lines so they never run out of fuel. Here’s how they work and how they’re used.
Portable generators ensure your essential appliances and electronics stay powered during an outage. Learn how to hook up a generator to your house.
Depending on your needs, many types of generators can power your home, RV, or campsite. Check out our guide for the best types of generators.
