Champion aXis 14kW with 200A ATS (100837) vs Generac Guardian 14kW (7224)
Both units carry the same best-fuel running rating: 14,000 W. 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) | Generac Guardian 14kW (7224) | |
|---|---|---|
| Type | home-standby | home-standby |
| Fuel | natural-gas, propane | natural-gas, propane |
| Running watts (gas / LP for standby) | 14000 W | 14000 W |
| Running watts (propane) | 14000 W | 14000 W |
| Running watts (natural gas) | 12500 W | 14000 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 | 60 A |
| Start type | automatic | automatic |
| Engine | Champion Milwaukee Series V-Twin | Generac G-Force 800 |
| Engine displacement | 754 cc | 816 cc |
| NG use at half load | — | 195 ft³/h |
| Propane use at half load | — | 1.81 gal/h |
| Weight | — | 385 lb |
| Warranty | 10 yr | 5 yr |
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