Whole House Generator Cost in 2026: Complete Price Breakdown
Updated July 2026 • 10 min read
The average whole house generator costs $8,000-$15,000 fully installed in 2026. But that range depends on generator size, brand, and your specific installation requirements. Here's the complete cost breakdown — and how to save $2,000-$4,000.
Quick Answer: How Much Does a Whole House Generator Cost?
$8,000 – $15,000 fully installed
As a nonprofit, we offer the lowest dealer pricing — save $2,000-$4,000 vs competitors
Whole House Generator Cost by Size
| Generator Size | Equipment | Installation | Total Installed |
|---|---|---|---|
| 10-14 kW (essentials) | $3,500-$5,000 | $3,500-$5,000 | $7,000-$10,000 |
| 16-20 kW (most homes) | $4,500-$6,500 | $4,000-$5,500 | $8,500-$12,000 |
| 22-26 kW (whole home + AC) | $5,500-$8,000 | $4,500-$6,000 | $10,000-$14,000 |
| 26+ kW (large homes) | $8,000-$15,000 | $5,000-$8,000 | $13,000-$23,000 |
What's Included in Whole House Generator Installation Cost?
- Concrete pad: $300-$600 (required for all permanent installations)
- Automatic transfer switch: $500-$1,500 (included with most generators)
- Electrical work: $1,500-$3,000 (panel connection, wiring)
- Gas line connection: $500-$1,500 (extending from meter to generator)
- Permits & inspections: $200-$500 (we handle all applications)
- Labor: $1,000-$2,000 (factory-trained technicians)
Power Up Advantage: All of the above are included in our quoted price. No surprise fees at install. All costs included regardless of utility connection distance.
Whole House Generator Cost by Brand
| Brand | 22kW Equipment | 22kW Installed | Notes |
|---|---|---|---|
| Generac ★ BEST VALUE | $5,500-$6,500 | $11,000-$14,000 | #1 selling brand, best value |
| Cummins | $6,500-$8,000 | $12,500-$15,500 | Commercial-grade reliability |
| Briggs & Stratton | $5,000-$6,000 | $10,500-$13,500 | Quietest operation |
| Kohler | $7,000-$9,000 | $13,000-$17,000 | Premium brand |
| Champion | $4,000-$5,500 | $9,000-$12,000 | Budget-friendly option |
How to Save on Whole House Generator Costs
1. Buy from a Nonprofit Dealer (Save $2,000-$4,000)
Power Up Generator Solutions is a 501(c)(3) nonprofit — the only one in the generator industry. No commissions. No upsells. Just fair pricing. We pass our dealer cost savings directly to you, typically saving $2,000-$4,000 compared to for-profit dealers.
2. Finance at $25/Month
We offer financing through Synchrony starting at $25/month. About 50% of our customers choose financing. All credit types considered with high approval odds. Financing makes a whole house generator accessible for any budget.
3. Right-Size Your Generator
Don't overbuy. A professional load calculation ensures you get exactly what you need — not more. Our free in-home assessment includes a circuit-by-circuit analysis so you're not paying for capacity you'll never use.
4. Install During Off-Season (May-August)
Peak installation demand runs September-April. Off-season scheduling offers faster availability and sometimes promotional pricing. Plan ahead rather than installing during an emergency when pricing leverage is limited.
Ongoing Generator Operating Costs
- Annual maintenance: $150-$300/year (recommended to maintain warranty)
- Fuel — natural gas: $3-5/hour when running ($75-$120 for a 24-hour outage)
- Fuel — propane: $4-8/hour when running (varies with propane prices)
- Oil changes: Every 100-200 hours or annually (~$50-100 if DIY)
Whole House Generator Cost FAQ
How much does a whole house generator cost?
A whole house generator costs $8,000-$15,000 fully installed in 2026. This includes the generator unit ($3,500-$8,000), automatic transfer switch ($500-$1,500), concrete pad ($300-$600), electrical work ($1,500-$3,000), gas line connection ($500-$1,500), permits ($200-$500), and labor ($1,000-$2,000). The most popular 22kW Generac Guardian runs $11,000-$14,000 installed.
What is the cheapest whole house generator?
The cheapest whole house generator fully installed starts around $7,000-$8,000 for a 10-14kW unit. Champion and DuroMax offer the most budget-friendly options at $4,000-$5,500 for equipment. For a true whole house generator that runs central AC, expect at least $10,000 installed. As a 501(c)(3) nonprofit, Power Up Generator Solutions offers the lowest dealer pricing available — typically $2,000-$4,000 below for-profit competitors.
How much does it cost to run a whole house generator?
A whole house generator running on natural gas costs $3-5 per hour to operate. For a 22kW generator, expect to burn about 3-5 cubic feet of natural gas per hour at half load. A 24-hour outage costs approximately $75-$120 in fuel. On propane, costs are slightly higher at $4-8 per hour. Annual maintenance costs an additional $150-$300 per year.
Does homeowners insurance cover a whole house generator?
Some homeowners insurance policies cover whole house generator installation as a home improvement. Generator damage from covered events (lightning, fire) is typically covered. However, mechanical breakdown is usually not covered under standard policies — a separate equipment breakdown endorsement is recommended. Check with your insurer about generator coverage before purchasing.
Is a whole house generator worth the cost?
A whole house generator is worth the cost for most homeowners who experience regular power outages, have family members with medical needs, or work from home. Key financial benefits: adds $5,000-$10,000 to home value, prevents food spoilage losses ($300-$600 per extended outage), protects against pipe freezing in winter, and maintains refrigerated medications. The peace of mind alone is priceless for families dependent on powered medical equipment.
How much does a Generac whole house generator cost installed?
A Generac home standby generator installed costs: Guardian 14kW = $8,000-$10,500; Guardian 18kW = $9,500-$12,000; Guardian 22kW = $11,000-$14,000; Guardian 26kW = $13,000-$16,000. These include all installation costs. As a 501(c)(3) nonprofit dealer, Power Up Generator Solutions offers Generac generators at fair dealer pricing — no commissions, no upsells, saving you $2,000-$4,000.
No Commissions. No Upsells. Just Fair Pricing!
As a 501(c)(3) nonprofit, we offer the lowest whole house generator pricing available. Get a free quote today.