Kohler Generators
The main premium alternative to Generac for whole-house standby, known for build quality.
Kohler at a glance
| Segment | Home standby |
|---|---|
| Power range | 10–26 kW home standby |
| Fuel | Natural gas or liquid propane |
| Transfer switch | Pairs with Kohler RXT/RDT automatic transfer switches |
| Warranty | 5-year / 2,000-hour limited (many home models) |
| Running noise | Corrosion-resistant enclosure; competitive running noise |
Notable Kohler models
- 14RCA (14 kW)
- 20RCA (20 kW)
- 26RCAL (26 kW)
How Kohler compares
Where Kohler sits against the other major US generator brands:
| Brand | Best for | Power range | Fuel | Transfer switch | Warranty |
|---|---|---|---|---|---|
| Kohler | Premium whole-house standby | 10–26 kW home standby | Natural gas or liquid propane | Pairs with Kohler RXT/RDT automatic transfer switches | 5-year / 2,000-hour limited (many home models) |
| Generac | Whole-house standby (market leader) | 7.5–26 kW standby · 3,000–8,000 W portable | Natural gas or liquid propane (standby); gas & dual-fuel (portable) | Air-cooled standby pairs with a Generac automatic transfer switch | 5-year limited (air-cooled standby) |
| Cummins | Standby with industrial engine heritage | 13–20 kW QuietConnect home standby | Natural gas or propane (home standby); diesel (industrial); Onan (RV) | Pairs with Cummins automatic transfer switches | 5-year limited (many home standby models) |
| Champion | Value portable & dual-fuel | 1,200–12,500 W portable · 8.5–14 kW standby | Gas, dual-fuel (gas/propane) and tri-fuel across the portable line | Portables pair with a manual transfer switch; standby line included | 3-year limited (many portables) |
| Westinghouse | Portable & dual-fuel home backup | 2,200–12,500 W portable & inverter | Gas and dual-fuel (gas/propane) across most models | Portables pair with a manual transfer switch | 3-year limited (many models) |
| Predator | Budget portable & inverter (Harbor Freight house brand) | 2,000–13,000 W portable & inverter | Gasoline; tri-fuel (gas/propane/natural gas) on select inverter and portable models | Portables pair with a manual transfer switch or interlock kit | 90-day limited; 2-year coverage on the emissions control system — shorter than most rivals |
| DuroMax | High-output dual-fuel & inverter portables | 2,200–16,000 W portable & inverter | Dual-fuel (gasoline or propane) across nearly the whole line | Portables pair with a manual transfer switch or interlock kit | 3-year limited (5-year on select XP/iH inverter and high-output models) |
| Briggs & Stratton | Whole-house standby with the longest warranty in the category | 12–26 kW home standby (PowerProtect / PowerProtect+) | Natural gas or liquid propane | Automatic transfer switch included on most standby packages | 7-year parts/labor/travel (PowerProtect+) — 10-year available through a dealer, longest of any major brand |
| Honda | Premium quiet inverter portables (RV, camping & home essentials) | 2,200–7,000 W portable inverter | Gasoline | Portables pair with a manual transfer switch or interlock kit | 3-year limited residential (1-year commercial); extended coverage available |
| FIRMAN | Budget dual-fuel and tri-fuel portables sold through big-box retail | 1,200–13,000 W portable & inverter | Gasoline; dual-fuel (gas/propane) on the H-series; tri-fuel on the T-series | Portables pair with a manual transfer switch or interlock kit | 3-year limited on most portable models |
| WEN | Budget inverter & portable generators with a 2-year warranty | 1,250–12,000 W portable & inverter | Gasoline; dual-fuel (gas/propane) on the DF-series | Portables pair with a manual transfer switch or interlock kit | 2-year limited — twice Predator’s 90 days, at a similar price point |
Frequently asked questions
What size Kohler generator do I need?
Most homes wanting whole-house backup with central air use a 20 kW Kohler (the 20RCA); a 14 kW (14RCA) suits smaller homes or essentials, and a 26 kW (26RCAL) covers large homes or multiple AC units. Size it to your total running load plus the largest starting surge — the sizing calculator gives you the kW class, and a Kohler dealer confirms it with a load calculation.
How much does a Kohler whole house generator cost?
A Kohler home standby unit typically costs about $3,500–$7,000 depending on kW, and installation adds roughly $3,000–$5,000, so an installed Kohler whole-house generator commonly runs $7,000–$12,000. Kohler positions slightly premium to Generac on build quality; get quotes from a local Kohler dealer for your exact model and site.
How long can a Kohler generator run continuously?
A Kohler home standby generator running on natural gas can run continuously for days or weeks, because it draws from your utility gas line. On propane it runs until the tank is low. Kohler recommends a maintenance/inspection interval (often around 500–2,000 hours depending on model), so for very long outages you schedule service rather than stopping for fuel.
Next steps
- Not sure what size you need? Use the generator sizing calculator.
- Compare the field: best whole house generators · best portable generators.
- Other brands: Generac, Cummins, Champion, Westinghouse, Predator, DuroMax, Briggs & Stratton, Honda, FIRMAN, WEN.
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