Different backgrounds, similar residential product
Generac is one of the most widely installed residential standby brands, while Cummins has a long history in commercial and industrial power generation alongside its residential line. For a typical single-family home, both offer comparable UL-listed automatic standby systems.
Where they're similar
Both cover a broadly similar residential kW range (roughly 7–26 kW), support natural gas or propane, and include a remote monitoring app (Generac Mobile Link, Cummins Connect). Typical installed cost ranges overlap, with Cummins often landing slightly higher.
When Cummins' background might matter
If your project has any commercial-scale component, or you value a manufacturer with deep industrial power generation experience, that's a legitimate factor to weigh — though for a standard residential install it's less likely to be decisive.
Availability and lead times
Because Generac's dealer network in the U.S. is generally larger, popular residential sizes are sometimes easier to source quickly compared to Cummins in certain regions — though this varies significantly by local dealer inventory and isn't a fixed rule. It's worth asking any installer you're comparing quotes with directly about current lead times for the specific brand and size you're considering.
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.
- Cummins Home Standby Generators — Manufacturer product documentation for Cummins' residential standby line.