Cummins QuietConnect RS20A 20kW vs Kohler 24RCLA 24kW Liquid-Cooled
The Kohler 24RCLA 24kW Liquid-Cooled is the more powerful unit: 24,000 running watts against 20,000 — about 17% more capacity for the Kohler 24RCLA 24kW Liquid-Cooled. The Kohler 24RCLA 24kW Liquid-Cooled is the quieter of the two (61 dBA vs 65 dBA — though manufacturers measure noise at different loads and distances).
| Cummins QuietConnect RS20A 20kW | Kohler 24RCLA 24kW Liquid-Cooled | |
|---|---|---|
| Price (MSRP) | — | $17,900 |
| Type | home-standby | home-standby |
| Fuel | natural-gas, propane | natural-gas, propane |
| Running watts (gas / LP for standby) | 20000 W | 24000 W |
| Running watts (propane) | 20000 W | 24000 W |
| Running watts (natural gas) | 18000 W | 21000 W |
| Noise level | 65 dBA | 61 dBA |
| Output voltage | 120/240V | 120/240V |
| Automatic transfer switch included | No | Yes |
| Main-line circuit breaker | 100 A | — |
| Start type | automatic | automatic |
| Engine | Cummins QSJ999G | Kohler KG2204 |
| Engine displacement | 999 cc | 2200 cc |
| NG use at half load | 172 ft³/h | — |
| Propane use at half load | 1.81 gal/h | — |
| Weight | 531 lb | — |
| Warranty | 5 yr | 5 yr |
Frequently asked questions
Which is more powerful, the Cummins QuietConnect RS20A 20kW or the Kohler 24RCLA 24kW Liquid-Cooled?
The Kohler 24RCLA 24kW Liquid-Cooled, at 24,000 running watts on its best fuel versus 20,000 W. Remember that dual-fuel and natural-gas ratings are lower than gasoline ratings — the comparison table shows the published per-fuel figures.
Where do these specifications come from?
Every record on BackupAtlas is hand-curated from manufacturer documentation and spec sheets, and each generator page links to its source document.