How Much Does Whole House Generator Cost in Tennessee?
Tennessee pricing is below the national average. Updated for 2026.
Whole House Generator Pricing in Tennessee
In Tennessee, the average cost for whole house generator is $8,600 installed, which is 14% lower than the national average of $10,000. Most Tennessee residents pay between $4,300 and $15,480.
Tennessee 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.
Tennessee vs National Average
What Affects Whole House Generator Cost in Tennessee?
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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Top-Rated Whole House Generator Pros in Tennessee
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💡 Tips to Save on Whole House Generator in Tennessee
- 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 Tennessee Cost Trends (2020–2024)
Prices have increased +17.7% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $7,304 | — |
| 2021 | $7,611 | +4.2% |
| 2022 | $8,106 | +6.5% |
| 2023 | $8,333 | +2.8% |
| 2024 | $8,600 | +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 Tennessee
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 Tennessee
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