Dual-Fuel Generator Audit
"Combustion engines are the most lied-about products in resiliency. We verify THD and cold-start reliability manually."
The Fuel Integrity Board
BENCH TESTED| Model | Output (W) | Survival Score | Failure Point | Market Price |
|---|---|---|---|---|
| 2200W |
9.4
/ 10
|
Ethanol Sensitivity | Check Price | |
| 4500W |
8.2
/ 10
|
AVR Voltage Drop | Check Price | |
| 9500W |
5.1
/ 10
|
High THD Levels | Check Price |
The "Clean Power" Myth
Manufacturers often claim THD (Total Harmonic Distortion) under 3%. Our tests on the Westinghouse unit showed spikes up to 12% during surge loads. For reference, anything over 5% THD can cause long-term damage to laptop power bricks and sensitive control boards on high-end HVAC units.
In-Depth Reviews
Champion 4500W Dual-Fuel Review: The Pragmatic Standard for Versatile Power
Champion has dominated the dual-fuel market for years. We put the 4500W inverter through its paces to see how it handles the transition from gasoline to propane and how its AVR holds up under load.
February 11, 2026Honda EU2200i Review: The Gold Standard and the Grime of Reality
A visceral audit of the legendary Honda EU2200i. We test its 1.8% THD clean power against the mechanical reality of ethanol sensitivity and salt-water fire risks.
February 11, 2026Westinghouse WGen9500DF Review: Brutal Power and the Invisible Cost of THD
The Westinghouse WGen9500DF is a powerhouse, but our oscilloscope tests reveal high THD levels that make it dangerous for sensitive modern electronics.
February 11, 2026