Kohler vs Generac: Complete Cost Guide
Real price ranges by kW size, plus every installation cost factor you need to budget accurately.
Price Breakdown by Generator Size
All prices include the generator unit. Total installed cost adds transfer switch, permits, pad, and labor.
| Size | Home Size | Kohler Unit | Generac Unit | Install Cost | Total (Kohler) | Total (Generac) |
|---|---|---|---|---|---|---|
7–10 kW Generac only at this size | 800–1,200 sq ft | N/A | $2,000–$2,800 | $1,500–$3,000 | N/A | $3,500–$5,800 |
14–16 kW Most popular residential size | 1,200–2,000 sq ft | $4,500–$5,500 | $3,200–$4,000 | $2,000–$4,000 | $6,500–$9,500 | $5,200–$8,000 |
20–22 kW Best for average American home | 2,000–3,000 sq ft | $5,800–$7,000 | $4,000–$5,200 | $2,500–$5,000 | $8,300–$12,000 | $6,500–$10,200 |
24–26 kW Handles most large appliances | 2,500–3,500 sq ft | $7,000–$8,500 | $5,000–$6,500 | $3,000–$5,500 | $10,000–$14,000 | $8,000–$12,000 |
36–38 kW Large homes, full coverage | 3,500–5,000 sq ft | $9,500–$12,000 | $7,500–$9,500 | $4,000–$7,000 | $13,500–$19,000 | $11,500–$16,500 |
48–50 kW Premium whole-estate coverage | 5,000+ sq ft / estates | $13,000–$16,000 | $9,000–$12,000 | $5,000–$9,000 | $18,000–$25,000 | $14,000–$21,000 |
* Prices are estimates based on national averages as of 2026. Actual costs vary by region, installer, and site conditions. Get a local quote for accurate pricing.
Installation Cost Factors
These factors can significantly affect your total installed cost — know them before you get quotes.
Transfer Switch
An automatic transfer switch (ATS) is required and typically costs $500–$1,500 installed. Most generator packages include one.
Electrical Permits
Local permits are required in most jurisdictions. Expect $150–$500 in permit fees, often included by the installer.
Concrete Pad
Generators must be mounted on a concrete pad. Pad installation adds $300–$800 depending on size and site conditions.
Gas Line Extension
If your gas line needs to be extended to the generator location, add $500–$2,000 depending on distance.
Electrical Panel Upgrades
Older homes may need panel upgrades to support a whole-home generator. Budget $1,000–$3,000 if required.
Labor Rates
Electrician labor varies significantly by region. Urban markets (NYC, LA, Chicago) run 30–50% higher than rural areas.
Is Kohler Worth the Extra Cost?
Kohler generators typically cost 30–50% more than comparable Generac units, both for the unit itself and the total installed price. Whether that premium is justified depends on your priorities.
When Kohler is worth it:
- • You have HOA noise restrictions (Kohler is 4–8 dB quieter)
- • You want the longest-lasting, most durable unit available
- • Budget is not a primary concern
- • You're in a coastal or humid climate (aluminum enclosure resists corrosion)
When Generac is the smarter choice:
- • You want the best value for the money
- • You need fast installation (more local dealers)
- • You're on a budget and need more kW for the dollar
- • You want the most widely supported product for service