Champion 26kW fleX
#1 in Over 22 kWFull review
For larger homes that want 26 kW in a rust-proof aluminum housing with the longest warranty in its class.
AP Electric $7,499$7,499
The Champion 26kW fleX is the better standby generator overall, rated 3.8 to 3.1. The Champion 26kW fleX leads on warranty. The Generac 28kW Standby 7329 wins on noise. The Champion 26kW fleX costs $888.10 less ($7,499 vs $8,387.10).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Generac 28kW Standby 7329
#5 in Over 22 kWFull review
For big all-electric homes that want the most output Generac fits in an air-cooled cabinet.
Amazon $8,387.10$8,387.10
Which should you buy?
- Choose the Champion 26kW fleX for warranty (10-year warranty vs 5-year warranty).
- Choose the Generac 28kW Standby 7329 for noise (67 dBA rated in normal operation vs 68 dBA rated in normal operation).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every over 22 kw standby generator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Champion 26kW fleX | Generac 28kW Standby 7329 |
|---|---|---|
| Overall rating | 3.8/5 | 3.1/5 |
| Value 35% | 32 $288 per kW ($7,499 with transfer switch, 26 kW on propane) | 25 $300 per kW ($8,387 with transfer switch, 28 kW on propane) |
| Transfer switch 15% | 100 includes a 200 A transfer switch | 100 includes a 200 A transfer switch |
| Noise 15% | 33 68 dBA rated in normal operation | 42 67 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 26kW fleX | Generac 28kW Standby 7329 | |
|---|---|---|
| Output | ||
| Rated output, propane | 26 kW | 28 kW |
| Rated output, natural gas | 23.4 kW | 25 kW |
| THD | Under 5% | Under 5% |
| Engine | 999 cc | 997 cc |
| Engine speed | 3,600 rpm | 3,600 rpm |
| Install | ||
| Transfer switch | Included, 200 A | Included, 200 A |
| Load management | No | Yes |
| Remote monitoring | No | Yes |
| Enclosure | Aluminum | Aluminum |
| Dimensions | 57.4 x 29.5 x 43.9 in | 46.4 x 26.3 x 30.7 in |
| Weight | 642.7 lb | 524 lb |
| Noise and warranty | ||
| Noise, normal operation | 68 dBA | 67 dBA |
| Noise, weekly self-test | - | 55 dBA |
| Warranty | 10 years | 5 years |
| Released | - | 2025 |