Head to head
Generac Guardian 22kW vs Kohler 20kW RCA
Generac · Home Standby Generator
Generac Guardian 22kW
~$5,999
22,000 W · up to whole home with central air
Quick takeThe Kohler 20kW RCA lists about $300 lower; the Generac Guardian 22kW puts out more sustained power (22,000 W); the Generac Guardian 22kW is quieter at 67 dB.
| Spec | Generac Guardian 22kW | Kohler 20kW RCA |
|---|---|---|
| Approx. price | ~$5,999 | ~$5,699 |
| Type | Home Standby Generator | Home Standby Generator |
| Fuel | NG/LP | NG/LP |
| Running / output watts | 22,000 W | 20,000 W |
| Starting / surge watts | 22,000 W | 20,000 W |
| Battery capacity | — | — |
| Expandable to | — | — |
| Noise | 67 dB | 69 dB |
| Runtime | Continuous (runs on home NG/LP supply); 22kW on LP, 19.5kW on NG | Continuous (runs on home NG/LP supply); 20kW on LP, 18kW on NG |
| Outlets | None — hardwired via automatic transfer switch (7043 bundle adds 200A SE switch) | None — hardwired via automatic transfer switch (sold separately) |
| Fuel tank | — | — |
| Weight | 466 lbs | 555 lbs |
| Transfer-switch ready | Yes | Yes |
| Warranty | 5-year limited | 5-year/2,000-hour limited |
Highlighted cell is the better figure for that row.
Owner pros and cons
Generac Guardian 22kW
- +Enormous installed base — parts, techs, and advice everywhere
- +Carries two AC units in most homes with load shedding
- +Often discounted now that the 24kW is the flagship
- +5-year warranty with widely available extended options
- +Multi-day storm performance in owner reports
- −19.5kW on natural gas — the derate matters for NG homes
- −67 dB is noticeably loud up close; siting matters
- −Being phased out in favor of the 24kW — long-term parts pricing unknown
Kohler 20kW RCA
- +Class-leading 41kVA surge starts big AC without load shedding
- +Hydraulic lifters and pressurized lubrication — minimal maintenance
- +Corrosion-proof enclosure suits coastal installs
- +5-year/2,000-hour warranty with 10-year extensions available
- +Priced competitively against Generac's 22kW
- −18kW on natural gas vs 20kW on LP
- −69 dB at full speed is the loud end of the class
- −OnCue Plus app and connectivity feel a generation behind
- −Thinner dealer network slows service scheduling in some areas
- −555 lbs and larger footprint complicate tight side-yard installs