Dripping water from range hoods

This article will provide information If you encounter water dripping from your range hood. 
 

The Density 

Water particles, oil particles and grease particles. All three of these have different density, which means a weaker pull is required for one while the other requires a stronger pull to be removed. 

Water Particles: 1.0 g/cm³
Oil Particles/Grease Particles: 0.8–0.9 g/cm³

Range hoods are manufactured to remove oil particles and grease particles. Since they have less density than water. At lower CFM rates you may have enough to remove/capture the grease and oil particles, but water particles may still linger and drip. 

This is also why oil and grease float on top of water.
 

What is the solution to dripping water?

The best solution is to either cover the pot when boiling water or to compensate with higher fan speeds. 

Installation tip: insulate around straight vertical ducting to prevent condensation from temperature changes.