Champion aXis 14kW with 200A ATS (100837) vs Cummins QuietConnect RS17A 17kW
The Cummins QuietConnect RS17A 17kW is the more powerful unit: 17,000 running watts against 14,000 — about 18% more capacity for the Cummins QuietConnect RS17A 17kW. The Champion aXis 14kW with 200A ATS (100837) is the quieter of the two (62 dBA vs 65 dBA — though manufacturers measure noise at different loads and distances). Warranty favors the Champion aXis 14kW with 200A ATS (100837): 10 years vs 5.
| Champion aXis 14kW with 200A ATS (100837) | Cummins QuietConnect RS17A 17kW | |
|---|---|---|
| Type | home-standby | home-standby |
| Fuel | natural-gas, propane | natural-gas, propane |
| Running watts (gas / LP for standby) | 14000 W | 17000 W |
| Running watts (propane) | 14000 W | 17000 W |
| Running watts (natural gas) | 12500 W | 17000 W |
| Noise level | 62 dBA | 65 dBA |
| Output voltage | 120/240V | 120/240V |
| Automatic transfer switch included | Yes | No |
| Main-line circuit breaker | 65 A | 100 A |
| Start type | automatic | automatic |
| Engine | Champion Milwaukee Series V-Twin | Cummins QSJ999G |
| Engine displacement | 754 cc | 999 cc |
| NG use at half load | — | 165 ft³/h |
| Propane use at half load | — | 1.73 gal/h |
| Weight | — | 531 lb |
| Warranty | 10 yr | 5 yr |
Frequently asked questions
Which is more powerful, the Champion aXis 14kW with 200A ATS (100837) or the Cummins QuietConnect RS17A 17kW?
The Cummins QuietConnect RS17A 17kW, at 17,000 running watts on its best fuel versus 14,000 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.