How Much Does Whole House Generator Cost in Missouri?
Missouri pricing is below the national average. Updated for 2026.
Whole House Generator Pricing in Missouri
In Missouri, the average cost for whole house generator is $8,700 installed, which is 13% lower than the national average of $10,000. Most Missouri residents pay between $4,350 and $15,660.
Missouri benefits from a lower cost of living than many states, resulting in more affordable pricing for whole house generator. This makes it one of the more budget-friendly states for this service.
A whole-house standby generator automatically powers your home during outages using natural gas or propane. Unlike portable generators, they turn on within seconds of a power loss and can run your entire home including HVAC, appliances, and medical equipment.
Missouri vs National Average
What Affects Whole House Generator Cost in Missouri?
Generator Size
10 kW (essentials): $3,000-$5,000. 20 kW (whole home): $5,000-$8,000. 24+ kW (large home): $8,000-$15,000
Installation
Labor and electrical work typically $3,000-$6,000 including transfer switch, pad, and gas line
Fuel Connection
Existing natural gas line: $500-$1,000 to connect. New propane tank: $1,500-$3,000
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💡 Tips to Save on Whole House Generator in Missouri
- 1.Size your generator to essential circuits only (10-14 kW) instead of whole-home (20+ kW)
- 2.Get quotes during spring/summer when demand is lower
- 3.Check if your utility offers rebates for natural gas generators
- 4.Compare financing options — many dealers offer 0% for 12-24 months
📈 Whole House Generator in Missouri Cost Trends (2020–2024)
Prices have increased +17.7% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $7,390 | — |
| 2021 | $7,700 | +4.2% |
| 2022 | $8,200 | +6.5% |
| 2023 | $8,430 | +2.8% |
| 2024 | $8,700 | +3.2% |
Based on national averages adjusted for annual inflation. Actual costs vary by location and project scope.
💬 What Did You Pay?
Real costs reported by homeowners for Whole House Generator in Missouri
Recent Reports
Frequently Asked Questions
What size generator do I need?
A 10-14 kW generator covers essentials (fridge, lights, sump pump, some outlets). 20-24 kW covers a full home including central AC. Calculate your needs by adding the wattage of circuits you want powered.
How long do whole house generators last?
Quality standby generators (Generac, Kohler, Briggs & Stratton) last 15-30 years with proper maintenance. Budget $200-$500/year for annual maintenance.
Whole House Generator Cost in Other States
Related Cost Guides for Missouri
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