Two established options
Generac and Kohler are both well-established residential standby generator manufacturers with broad dealer networks across the U.S. Neither is objectively better in every situation — local dealer support and your installer's familiarity with a given brand often matter more than the brand name itself.
Where they're similar
Both offer residential units broadly in the 7–26 kW range, support natural gas or propane, and provide a remote monitoring app (Generac Mobile Link, Kohler OnCue). Typical installed cost bands overlap significantly between the two.
Where local factors matter more
Generac has one of the largest dealer networks in the country, which can mean broader parts and service availability in some areas. Kohler's network is smaller but still substantial — availability really comes down to what's strong in your specific region.
A note on the Kohler-to-Rehlko transition
Kohler's power systems and engines business became a standalone company under the name Rehlko starting in 2024, with the rebrand continuing through 2025. Products and support may now be marketed under the Rehlko name in some regions even though "Kohler" remains the more commonly searched term for the same underlying generator line — worth being aware of so branding on a quote or a unit's nameplate doesn't seem unfamiliar.
Frequently asked questions
Sources
- NFPA 70 — National Electrical Code — Governs the electrical wiring and transfer switch requirements referenced throughout residential generator installation.
- Generac Home Standby Generators — Manufacturer product documentation for Generac's residential standby line.
- Kohler Energy Is Now Rehlko — Manufacturer announcement confirming Kohler's power systems and engines business rebranded as Rehlko starting in 2024.