Champion 14kW aXis
#2 in Under 15 kWFull review
For budget buyers who want a whole-house switch and a long warranty for essentials and a small air conditioner.
Norwall $4,999$4,999
The Champion 14kW aXis is the better standby generator overall, rated 4.2 to 3.2. The Champion 14kW aXis leads on warranty, value and noise. The Champion 14kW aXis costs $385.39 less ($4,999 vs $5,384.39).
Cummins Quiet Connect RS13A 13kW
#6 in Under 15 kWFull review
For homes on natural gas that want essentials covered by a quiet, well supported brand with monitoring included.
Norwall $5,384.39$5,384.39
Prices were last checked November 1, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Champion 14kW aXis for warranty (10-year warranty vs 5-year warranty), value ($357 per kW ($4,999 with transfer switch, 14 kW on propane) vs $414 per kW ($5,384 with transfer switch, 13 kW on propane)) and noise (62 dBA rated in normal operation vs 65 dBA rated in normal operation).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every under 15 kw standby generator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Champion 14kW aXis | Cummins Quiet Connect RS13A 13kW |
|---|---|---|
| Overall rating | 4.2/5 | 3.2/5 |
| Value 35% | 49 $357 per kW ($4,999 with transfer switch, 14 kW on propane) | 27 $414 per kW ($5,384 with transfer switch, 13 kW on propane) |
| Transfer switch 15% | 100 includes a 200 A transfer switch | 100 includes a 200 A transfer switch |
| Noise 15% | 83 62 dBA rated in normal operation | 58 65 dBA rated in normal operation |
| Power quality 10% | 83 under 5% THD | 83 under 5% THD |
| Warranty 25% | 100 10-year warranty | 29 5-year warranty |
Specifications
| Champion 14kW aXis | Cummins Quiet Connect RS13A 13kW | |
|---|---|---|
| Output | ||
| Rated output, propane | 14 kW | 13 kW |
| Rated output, natural gas | 12.5 kW | 13 kW |
| THD | Under 5% | Under 5% |
| Engine | 754 cc | 999 cc |
| Engine speed | 3,600 rpm | 3,600 rpm |
| Install | ||
| Transfer switch | Included, 200 A | Included, 200 A |
| Load management | No | No |
| Remote monitoring | No | Yes |
| Enclosure | Steel | Aluminum |
| Dimensions | 49 x 28 x 28 in | 34.1 x 36.0 x 27.3 in |
| Weight | 439 lb | 479 lb |
| Noise and warranty | ||
| Noise, normal operation | 62 dBA | 65 dBA |
| Warranty | 10 years | 5 years |