Four new Tier 4 Final mobile diesel generator options broaden the line’s power node availability to 25 – 600+ kVA Ultra-quiet operation with sealed sound attenuation and quiet cooling fans ...

The PRO5.4DES Portable Generator is powered by the KOHLER Command PRO diesel engine, which delivers professional-grade performance within a sound-dampening enclosure for surprisingly quiet operation.

Our average of how long a generator ran, over various loads, on a full tank of gasoline or diesel fuel, a 20-pound tank for propane-based portables, or a 250-gallon propane tank for stationary models.

To pick the best home generators, we researched popular features, scoured consumer reviews, and talked with product engineers ... though it only hits a relatively quiet 74 decibels when running ...