Cost guide
Average installed cost range in St. Louis
The average cost in St. Louis ranges from $9,267 to $11,219. This is adjusted for local labor rates (Factor: 0.93).
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Estimated range
$9,267 - $11,219
Permits
Local factors that change price
- Permitting approval from St. Louis Building Division
- Fuel availability (natural gas vs propane)
- Electrical panel upgrades and transfer switch type
Installations in St. Louis typically require approval from St. Louis Building Division. Always hire a licensed electrician and schedule the final inspection.
Recommended setup
Typical setup & recommended kW
Most homes in St. Louis land in the 18kW to 22kW range for whole-home backup, but HVAC load and fuel access drive the final sizing decision.
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FAQ
FAQ
What is the average installed cost in St. Louis?
Most projects fall within the localized range based on labor, fuel, and permitting assumptions.
What can change the final quote?
Panel upgrades, site access, and fuel line length are common drivers.
More resources
More cost resources
- Missouri Generator Installation Cost
- Generator Installation Cost by Location
- Home Generator Installation Cost