Briggs & Stratton PowerProtect DX 26kW (040806) vs Cummins QuietConnect RS25 25kW Liquid-Cooled
The Briggs & Stratton PowerProtect DX 26kW (040806) is the more powerful unit: 26,000 running watts against 25,000 — about 4% more capacity for the Briggs & Stratton PowerProtect DX 26kW (040806). The Cummins QuietConnect RS25 25kW Liquid-Cooled is the quieter of the two (64 dBA vs 65 dBA — though manufacturers measure noise at different loads and distances). Warranty favors the Briggs & Stratton PowerProtect DX 26kW (040806): 10 years vs 2.
| Briggs & Stratton PowerProtect DX 26kW (040806) | Cummins QuietConnect RS25 25kW Liquid-Cooled | |
|---|---|---|
| Type | home-standby | home-standby |
| Fuel | natural-gas, propane | natural-gas, propane |
| Running watts (gas / LP for standby) | 26000 W | 25000 W |
| Running watts (propane) | 26000 W | 25000 W |
| Running watts (natural gas) | 24000 W | 25000 W |
| Noise level | 65 dBA | 64 dBA |
| Output voltage | 120/240V | 120/240V |
| Automatic transfer switch included | No | No |
| Main-line circuit breaker | 125 A | 125 A |
| Start type | automatic | automatic |
| Engine | Briggs & Stratton Vanguard | — |
| Engine displacement | 993 cc | 2400 cc |
| NG use at half load | 206 ft³/h | 185.7 ft³/h |
| Propane use at half load | 2.57 gal/h | 2.1 gal/h |
| Weight | 540 lb | 1109 lb |
| Warranty | 10 yr | 2 yr |
Frequently asked questions
Which is more powerful, the Briggs & Stratton PowerProtect DX 26kW (040806) or the Cummins QuietConnect RS25 25kW Liquid-Cooled?
The Briggs & Stratton PowerProtect DX 26kW (040806), at 26,000 running watts on its best fuel versus 25,000 W. Remember that dual-fuel and natural-gas ratings are lower than gasoline ratings — the comparison table shows the published per-fuel figures.
Which costs less to run, the Briggs & Stratton PowerProtect DX 26kW (040806) or the Cummins QuietConnect RS25 25kW Liquid-Cooled?
Estimated fuel for 24 hours at about 50% load: $74 on natural gas for the Briggs & Stratton PowerProtect DX 26kW (040806) vs $67 on natural gas for the Cummins QuietConnect RS25 25kW Liquid-Cooled, at national average prices. These are spec-sheet-derived estimates — the assumptions are on the methodology page, and different fuels make this a cost comparison, not an efficiency ranking.
Where do these specifications come from?
Every record on BackupAtlas is hand-curated from manufacturer documentation and spec sheets, and each generator page links to its source document.