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Verified Reviews for Generator Install pros in Saint Clair, MO

*The Angi rating for Generator Install companies in Saint Clair, 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 Saint Clair, 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 February 10, 2026

Find Generator install pros in Saint Clair

Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
4.8(
37
)

Serving Saint Clair, MO 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."
My jobs
My jobs
My jobs
My jobs
My jobs

+3

49 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Collective Enterprise
Collective Enterprise
5.0(
15
)

Serving Saint Clair, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"The technician arrived on time and performed the task promptly. He cleaned the work area. Very pleased!"
Response time2 days
Response rate92%
2 neighbors recently requested a quote
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Avatar for Donohue's Lightning Rods
Donohue's Lightning Rods
4.3(
70
)

Serving Saint Clair, MO and surrounding areas

Approved

In business since 1971

Free estimates

Emergency services offered

"Within minutes after submitting an inquiry, Seamus contacted me to find out specifics of my project and although he provided an estimate, he was receptive to coming out for a site visit before I committed. Edward came for the preliminary site visit and afterwards, I accepted their proposal. Cliff, the installer, communicated with me with scheduling and was very professional and easy deal with. Edward performed an inspection after install to make sure everything was done properly. The people representing this company seem very knowledgeable about their work and is backed up by generations of experience."
Jobs from the last 3 year
Jobs from the last 3 year
Lightning protection
Lightning protection
Lightning protection

+10

Response time1 day
74 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for Solarize
Solarize
5.0(
10
)

Serving Saint Clair, 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."
137 neighbors recently requested a quote
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Avatar for H.C. Design, LLC
H.C. Design, LLC
4.7(
91
)

Serving Saint Clair, MO and surrounding areas

Approved

In business since 2001

Free estimates

Small jobs welcome

"There was a problem with the first installer that did not show back up to complete the installation I placed a call to the owner and he immediately sent another installer and he finished the job and got everything working. Everything is working fine"
Have it your way
The Red Wall
Red Wall
Red Wall
Suspended Entertainment

+35

Response time9 hrs
Recommended by98%of homeowners
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Spartan Electric
4.3(
36
)

Serving Saint Clair, MO and surrounding areas

Approved

Customers say: Quick response

"Tom from Synergy did the bid for under cabinet lighting install, however sent someone else to do the job. Originally discussed with Tom that he would use a regular converter box inside the cabinet and place a dimmer switch on the wall, but the other guy he sent wasn't aware of this and placed the dimmer converter in the cabinet. This has resulted in us having to use the dimmer switch inside the cabinet instead of on a wall switch -- not what I requested. Also, I discussed with Tom installing an additional outlet in our kitchen during the bid process. After he left I noticed he did not include that on the written bid. The guy he sent didn't know about it either. The outlet was installed however. Overall, I was charged $95 additional over the bid and didn't get exactly what I wanted in regard to the dimmer switch for under cabinet lighting. Both electricians were very nice and professional, but there was definitely a communication problem in regard to the installation of the under cabinet lighting. Perhaps I should have clarified the issue more strongly, or perhaps I didn't understand. Either way, I'm happy with the lighting overall, but not 100%."
11 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for Electronics 911
Electronics 911
5.0(
5
)

Serving Saint Clair, MO and surrounding areas

Approved

In business since 1993

Free estimates

Warranties offered

"Kevin is amazing. He's installed our alarm system, security camera system, IT devices, DirecTV. Great work, fair prices, highly recommended!"
Response time2 days
Recommended by100%of homeowners
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Showing 1-10 of 106
Generator Install questions, answered by experts

Natural gas and electricity rates vary significantly based on location, and pricing can change over time, too. It’s possible that in locations where natural gas is particularly inexpensive, it will cost less than grid-based electricity will. However, you should also factor in the generator’s initial costs and maintenance needs, as well as its noise level and if it can comfortably power all your home appliances.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

The Saint Clair, MO homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.

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