At a Glance
Generac
Market Leader
Pros:
- ✓Largest dealer network in the US
- ✓Most affordable at entry level
- ✓Wide range of sizes (10kW-150kW)
- ✓Free mobile monitoring app
Cons:
- −Louder than competitors
- −More frequent maintenance required
- −Some reliability concerns in older models
Best for: Budget-conscious buyers, those who want easy service access
Kohler
Premium Choice
Pros:
- ✓Quieter operation (up to 10 dB less)
- ✓Longer engine lifespan
- ✓Corrosion-proof enclosure
- ✓Better warranty coverage
Cons:
- −Higher upfront cost (20-40% more)
- −Smaller dealer network
- −Fewer size options
Best for: Noise-sensitive locations, buyers prioritizing longevity
Find the Right Size for Your Home
Our calculator recommends the right kW size regardless of brand.
Use the CalculatorDetailed Comparison
| Category | Generac | Kohler | Winner |
|---|---|---|---|
| Price | $3,000 - $12,000 (unit only) | $4,000 - $16,000 (unit only) | Generac |
| Noise Level | 66-69 decibels | 59-65 decibels | Kohler |
| Reliability | Good (regular maintenance critical) | Excellent (longer service intervals) | Kohler |
| Dealer Network | 5,000+ authorized dealers | ~1,500 authorized dealers | Generac |
| Warranty | 5-year limited | 5-year comprehensive | Kohler |
| Transfer Speed | Under 10 seconds | 10-12 seconds | Generac |
| Size Range | 10kW - 150kW | 8.5kW - 150kW | Tie |
| Smart Features | Mobile Link (free) | OnCue Plus ($200-350/year) | Generac |
Our Recommendation
Choose Generac If:
- • Budget is a primary concern
- • You live in a rural area with limited service options
- • You want free mobile monitoring
- • Fast automatic transfer is important
- • You're comfortable with regular maintenance
Choose Kohler If:
- • Noise is a concern (close neighbors)
- • You prioritize long-term reliability
- • You want better warranty coverage
- • You prefer less frequent maintenance
- • You're willing to pay more upfront for quality
Frequently Asked Questions
Is Generac or Kohler more reliable?▼
Kohler generators are generally considered more reliable long-term due to their commercial-grade engines and better build quality. However, Generac has improved significantly in recent years, and with proper maintenance, both brands can last 20-30 years. The key is following the manufacturer's maintenance schedule.
Why is Generac so much cheaper?▼
Generac achieves lower prices through economies of scale (they sell 75% of all residential generators), manufacturing efficiency, and using residential-grade components vs Kohler's commercial-grade parts. This doesn't mean Generac is "cheap"— it means they've optimized for the residential market while Kohler maintains its premium positioning.
How much quieter is Kohler?▼
Kohler generators typically run 4-10 decibels quieter than comparable Generac models. To put that in perspective, every 10 dB reduction sounds about half as loud to human ears. A Kohler at 60 dB sounds significantly quieter than a Generac at 68 dB. This matters most in neighborhoods with noise ordinances or close neighbors.
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