How Much Does Whole House Generator Cost in Montana?
Montana pricing is near the national average. Updated for 2026.
Whole House Generator Pricing in Montana
In Montana, the average cost for whole house generator is $9,500 installed, which is 5% lower than the national average of $10,000. Most Montana residents pay between $4,750 and $17,100.
Montana has costs that track closely with the national average, though prices can still vary between urban and rural areas within the state.
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.
Montana vs National Average
What Affects Whole House Generator Cost in Montana?
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
📐 Whole House Generator in Montana Cost Calculator
Get a personalized estimate based on your project details
Get Free Quotes from Local Pros
Compare prices from top-rated contractors in your area.
Top-Rated Whole House Generator Pros in Montana
5 providersQuality Property Services
✅ VERIFIEDHeritage Electrical
Premier Property Services
Are You a Whole House Generator Professional?
Get listed on CostWhale and reach thousands of customers searching for whole house generator in Montana.
💡 Tips to Save on Whole House Generator in Montana
- 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 Montana Cost Trends (2020–2024)
Prices have increased +17.7% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $8,069 | — |
| 2021 | $8,408 | +4.2% |
| 2022 | $8,954 | +6.5% |
| 2023 | $9,205 | +2.8% |
| 2024 | $9,500 | +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 Montana
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 Montana
🔍 Get Free Quotes from Local Pros
Compare prices from pre-screened contractors in your area. Free, no-obligation estimates.
* CostWhale may earn a commission. This doesn't affect our pricing data or recommendations.
💰 Get Weekly Cost-Saving Tips
Join 10,000+ smart homeowners. Unsubscribe anytime.