Champion aXis 14kW vs Generac Guardian 18kW
What is the difference?
The Champion aXis 14kW has 14 kW of running power. The Generac Guardian 18kW has 18 kW of running power.
Both are dual-fuel.
The Champion aXis 14kW weighs 439 lb, the Generac Guardian 18kW weighs 425 lb.
The Champion aXis 14kW has a 10-year warranty, the Generac Guardian 18kW has a 5-year warranty.
Specs side by side
| Champion aXis 14kW | Generac Guardian 18kW | |
|---|---|---|
| Running W | 14000 | 18000 |
| Peak W | — | — |
| Fuel | dual-fuel | dual-fuel |
| Tank (gal) | — | — |
| Run time @50 % (h) | — | — |
| Noise (dB) | 62 | — |
| CO shutoff | — | — |
| Weight (lb) | 439 | 425 |
| Warranty (yr) | 10 | 5 |
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Specs as read from manufacturer pages on 2026-10-25 / 2026-10-25. 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 Guardian 18kW?
The Generac Guardian 18kW. More running watts: 18000 W vs 14000 W.
Which has the longer warranty, Champion aXis 14kW or Generac Guardian 18kW?
The Champion aXis 14kW. Longer warranty: 10 years vs 5 years.
More comparisons
- Champion aXis 14kW vs Generac EcoGen 15kW
- Generac Guardian 18kW vs Champion aXis 22kW
- Generac Guardian 18kW vs Champion 22 kW fleX Home Standby (201016)
Compare other models → · All Champion models · All Generac models