*The Angi rating for Generator Install companies in Wellston, 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 Wellston, 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 May 23, 2025
Serving Wellston, 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 Wellston, 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 Wellston, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Emergency services offered
"I would call them again if I had another electrical issue."
+18
Serving Wellston, MO and surrounding areas
Approved
In business since 1945
Free estimates
Warranties offered
"We highly recommend JBathe Electric. They were very knowledgeable and professional! They were very reasonably priced! From the office staff to the installers the customer service was superb!"
+20
Serving Wellston, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Emergency services offered
Small jobs welcome
"Great job. Had correct material and did the install with no problems."
+1
Serving Wellston, 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 Wellston, 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 Wellston, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Emergency services offered
Warranties offered
"Martin, our technician inspected our home for electrial problems, gave us a report on what he found, a price, and fixed everything we wanted and the price was exactly what he quoted. He was quite pleasant and very thorough and explained everything well. I would use this company again and would recommend them to anyone."
+13
Serving Wellston, MO and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Communication was great. Installer was friendly and very helpful."
Serving Wellston, MO and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"Ralph installed a ceiling fan for me! Ralph was the ultimate professional whom I would highly recommend. He was proficient, knowledgeable and a pleasure to talk with!"
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.
