A. 1500rpm: these generating sets consume less fuel but they are bigger, heavier and more expensive.Expected lifespan: 15000 hours for high-quality water-cooled generating sets

B. 3000rpm: cheaper and lighter, but consume more fuel and have more revolutions per minute, which causes them to be louder.In general, the expected lifespan is shorter.

Expected lifespan: 2500 hours for high-quality air-cooled 1-cilinder gasoline generating sets.

Expected lifespan: 4000 hours for high-quality water-cooled 2-cilinder gasoline generating sets.

Expected lifespan: 7500 hours for high-quality water-cooled diesel generating sets.

If you are looking for a long-term solution, we recommend you to buy a water-cooled 1500rpm generating set.