Generac 10kW Standby 7321
#4 in Under 15 kWFull review
For smaller homes that only need the fridge, furnace, well pump and lights during an outage, at a low price.
Amazon $3,896.10$3,896.10
The Generac 10kW Standby 7321 is the better standby generator overall, rated 3.5 to 3.1. The Generac 10kW Standby 7321 leads on transfer switch and noise. The Briggs & Stratton PowerProtect 13kW wins on warranty and value. The Generac 10kW Standby 7321 costs $563.90 less ($3,896.10 vs $4,460).
Briggs & Stratton PowerProtect 13kW
#7 in Under 15 kWFull review
For buyers covering essentials who already have, or will buy, a separate transfer switch and want a long warranty.
Norwall $4,460$4,460
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 Generac 10kW Standby 7321 for transfer switch (includes a 100 A transfer switch vs transfer switch bought separately) and noise (61 dBA rated in normal operation vs 69 dBA rated in normal operation).
- Choose the Briggs & Stratton PowerProtect 13kW for warranty (7-year warranty vs 5-year warranty) and value ($343 per kW ($4,460, 13 kW on propane) vs $390 per kW ($3,896 with transfer switch, 10 kW on propane)).
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 | Generac 10kW Standby 7321 | Briggs & Stratton PowerProtect 13kW |
|---|---|---|
| Overall rating | 3.5/5 | 3.1/5 |
| Value 35% | 36 $390 per kW ($3,896 with transfer switch, 10 kW on propane) | 54 $343 per kW ($4,460, 13 kW on propane) |
| Transfer switch 15% | 100 includes a 100 A transfer switch | 0 transfer switch bought separately |
| Noise 15% | 92 61 dBA rated in normal operation | 25 69 dBA rated in normal operation |
| Power quality 10% | 83 under 5% THD | 83 under 5% THD |
| Warranty 25% | 29 5-year warranty | 57 7-year warranty |
Specifications
| Generac 10kW Standby 7321 | Briggs & Stratton PowerProtect 13kW | |
|---|---|---|
| Output | ||
| Rated output, propane | 10 kW | 13 kW |
| Rated output, natural gas | 9 kW | 11.5 kW |
| THD | Under 5% | Under 5% |
| Engine | 459 cc | 627 cc |
| Engine speed | 3,600 rpm | 3,600 rpm |
| Install | ||
| Transfer switch | Included, 100 A | Sold separately |
| Load management | No | No |
| Remote monitoring | Yes | - |
| Enclosure | Aluminum | Aluminum |
| Dimensions | 46.4 x 26.3 x 30.7 in | 28.5 x 25.5 x 37.6 in |
| Weight | 344 lb | 315 lb |
| Noise and warranty | ||
| Noise, normal operation | 61 dBA | 69 dBA |
| Noise, weekly self-test | 49 dBA | 65 dBA |
| Warranty | 5 years | 7 years |
| Released | 2025 | - |