Champion aXis 14kW vs Generac EcoGen 15kW
What is the difference?
The Champion aXis 14kW has 14 kW of running power. The Generac EcoGen 15kW has 15 kW of running power.
Both are dual-fuel.
The Champion aXis 14kW weighs 439 lb, the Generac EcoGen 15kW weighs 461 lb.
The Champion aXis 14kW has a 10-year warranty, the Generac EcoGen 15kW has a 5-year warranty.
Specs side by side
| Champion aXis 14kW | Generac EcoGen 15kW | |
|---|---|---|
| Running W | 14000 | 15000 |
| Peak W | — | — |
| Fuel | dual-fuel | dual-fuel |
| Tank (gal) | — | — |
| Run time @50 % (h) | — | — |
| Noise (dB) | 62 | — |
| CO shutoff | — | — |
| Weight (lb) | 439 | 461 |
| Warranty (yr) | 10 | 5 |
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Specs as read from manufacturer pages on 2026-10-25 / 2026-10-26. Specs one maker does not list are left out of the comparison. Sponsored links; we may earn a commission.
Common questions
Which has more running watts, Champion aXis 14kW or Generac EcoGen 15kW?
The Generac EcoGen 15kW. More running watts: 15000 W vs 14000 W.
Which has the longer warranty, Champion aXis 14kW or Generac EcoGen 15kW?
The Champion aXis 14kW. Longer warranty: 10 years vs 5 years.
More comparisons
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Compare other models → · All Champion models · All Generac models