Generac vs Kohler Generators
Last updated: March 2026
Generac and Kohler are the two names that come up in every generator conversation. Generac is the dominant player, roughly three out of four residential standby generators installed in North America are theirs. Kohler is the premium alternative that a certain type of buyer gravitates toward.
Choose Generac if...
Choose Generac if you want the widest selection (7 sizes vs 3), the largest dealer network (9,200+), and the lowest price at comparable sizes.
Choose Kohler if...
Choose Kohler if you value premium construction, want the heavier and more durable unit, and don't mind paying 15–20% more. The current free 10-year warranty promotion significantly closes the value gap.
Head to Head
| Spec | Generac 22kW | Kohler 20RCA |
|---|---|---|
| Power (LP/NG) | 22 / 19.5 kW | 20 / 18 kW |
| Unit price | $6,119 | $5,699 |
| Installed cost | $12,000–$17,000 | $11,000–$16,000 |
| Noise | 67 dB | 64 dB exercise / 69 dB full |
| Weight | 466 lbs | 555 lbs |
| Warranty | 5 years | 5 years (10-yr promo) |
| Monitoring | Mobile Link (free) | OnCue Plus (free) |
Price
Generac units cost less at every comparable size. At 26kW, the gap nearly disappears. Regional pricing varies more than brand pricing; the 15–25% swing between Midwest and West Coast often exceeds the brand-to-brand difference.
Build Quality
Kohler units are heavier at every size: 555 lbs vs 466 lbs at the popular 20–22kW class. That extra weight is thicker aluminum panels, a more substantial enclosure rated to 181 mph winds. Based on owner reviews, Kohler's 4.4/5 on ConsumerAffairs may be consistent with this build quality difference.
Noise
Kohler publishes two noise ratings: exercise mode (what neighbors hear weekly) and full speed (during outages). At 20–22kW, Kohler's exercise is 3 dB quieter (64 vs 67). During a multi-day outage, Generac is 2 dB quieter (67 vs 69). Which matters more depends on your priorities.
Selection
Generac offers seven residential sizes (10–28 kW). Kohler offers three (14, 20, 26). If you need 10, 18, 22, 24, or 28 kW, Generac is your only option between these two.
Warranty
Both offer 5-year standard. Generac sells 10-year extensions for ~$1,000. Kohler is currently offering a free 10-year extension: if still active when you buy, it's a significant deal.
Frequently Asked Questions
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Sources & Citations
| Claim / Statistic | Source |
|---|---|
| Generac ~75% North American residential standby market share | investing.com(accessed 2025-03) |
| Generac dealer network (9,200+) | generac.com(accessed 2025-03) |
| Generac owner reviews (1.6/5 from 130+ reviews) | pissedconsumer.com(accessed 2025-03) |
| Generac 22/24kW alternator issues (reported, class action status unverified) | topclassactions.com(accessed 2025-03) |
| Kohler owner reviews (4.4/5 from 300+ reviews) | consumeraffairs.com(accessed 2025-03) |
| Kohler Power rebranded to Rehlko (Sept 2024) | rehlko.com(accessed 2025-03) |
| PissedConsumer generator brand reviews | pissedconsumer.com(accessed 2025-03) |
| ConsumerAffairs generator reviews | consumeraffairs.com(accessed 2025-03) |
| U.S. Energy Information Administration (fuel costs) | eia.gov(accessed 2025-03) |
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