*The Angi rating for Generator Install companies in Middletown, 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 Middletown, 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 July 24, 2025
Serving Middletown, 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 Middletown, MO and surrounding areas
Approved
In business since 1971
Free estimates
Emergency services offered
"Jim for Donhohues Lightning Rods installed the lightning rod system in my home. When the work was done I was very happy as their installer came as per promised time, and perform the work. Before giving them the work Jim completely sold me their work ethics, quality, and service. There was a minor issue and his team took complete ownership of this issue and talked to me in detail. They provide a very good explanation to satisfy me. I am a happy customer."
+10
Serving Middletown, MO and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"Gentleman who owns Solarize was professional and courteous. He communicated well with the manufacturer and convinced them that a replacement inverter was needed based on the data he saw and the manufacturer had seen. It's what we were hoping for."
Serving Middletown, MO and surrounding areas
Approved
In business since 2009
Emergency services offered
Credit card accepted
"James was experienced, friendly and dod a wonderful job. Very happy he was our electrician."
+2
Serving Middletown, MO and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
FixPro is a locally owned and operated handyman service proudly serving St. Louis, St. Charles, Lincoln, Warren, Franklin, and Jefferson Counties. We specialize in high-quality home repairs, carpentry, drywall, painting, flooring, deck repair, and general maintenance—handling everything from small fixes to larger improvement projects with precision and professionalism.\n\nWith years of hands-on experience across construction, maintenance, and service industries, I built FixPro to deliver what most contractors don’t: clear communication, reliable scheduling, and work done right the first time. We show up when we say we will, diagnose issues properly, and provide straightforward solutions without cutting corners.\n\nOur approach is simple—treat every home like it’s our own. We focus on clean workmanship, long-term durability, and customer satisfaction. If you want it done right the first time, FixPro is ready.\n\nNeed Something Fixed? Hire a Pro.
Serving Middletown, MO and surrounding areas
Approved
In business since 2004
Free estimates
Credit card accepted
"We have worked with SOHO on numerous camera installation projects. Their attention to detail and quality of work is far above others we have encountered in the industry. We would not hesitate to use them for any project that comes up."
Serving Middletown, MO and surrounding areas
Approved
Free estimates
Emergency services offered
Small jobs welcome
I am a retired journeyman electrician with an apprentice available for attic work and bigger jobs. I have experience installing charging stations, upgrading distribution panels, remodels, basement finishes, and have overseen Large lighting layouts and LED upgrades.
Serving Middletown, MO and surrounding areas
Approved
In business since 2023
Free estimates
Wortmann Agri-services is your number one choice for all your electrical needs. Our commitment to quality is second to none, and we guarantee your complete satisfaction. We enjoy creating long term relationships with each of our clients, and we look forward to working with you!
Serving Middletown, MO and surrounding areas
Approved
In business since 2021
Free estimates
Offers commercial services
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!
Serving Middletown, MO and surrounding areas
Approved
In business since 2013
Lighthouse Outdoor Lighting of Central Missouri is Missouri's most respected outdoor lighting company. Our expertise gives us the ability to offer our neighbors a wide variety of plans. Our attention to detail and expert design skills allow for us to create that beautiful outdoor experience, while adding site safety and security. \n\nWe have been in this industry for over 10 years and we strongly believe in giving our customers the most for their money. Why let night hide what you have worked so hard to cerate? We have consistently focused on the needs of our customers, providing personalized attention and a stress-free experience. This approach has set us apart from our competition and keeps our customers coming back!\n\nYou can be sure your project will be handled promptly and professionally. Call us today to schedule an appointment!\n
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 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.
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.
Traditional and inverter generators can provide off-grid or emergency power. Learn the pros and cons of a traditional generator vs. inverter generator.
Having a back-up power source in case of emergency is important. Here’s how to use a generator to power your house.
Whole house generators are a power alternative that can deal with frequent blackouts and other problems. Here’s how they function.
