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TechTime is a Neptronic publication aiming to inform you of common issues highlighted by our technical support team and the best way to deal with them. Each edition features three new topics and will be posted on neptronic.com.

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Adiabatic Wars

Comparing Evaporative Vs. High Pressure

As some of you might have heard, Neptronic will soon be introducing a new high pressure atomizing humidifier called SKH. This makes a lot of people wonder what will be the main differences between this system and the SKV evaporative humidifier when it comes to selecting them for a project.


Each of these systems has their own characteristics that make them better in particular applications. Here are some of the main advantages and considerations of each system to help you better understand how they work and make the right choice when the time comes.





Operates with standard water


Accurate control as adiabatic process stops when demand signal stops


Highly efficient - most water is evaporated


Very reliable due to maintenance limited to RO membrane and softener


Can be located immediately upstream of other AHU/duct components; moisture eliminator required (additional space and pressure drop).


Very reliable as easy to offer N+1 redundant pumps or station


Lower equipment cost than high pressure atomization


No odors if RO water holding tank has UV sanitation or periodic drain









Possibly lower RH accuracy due to dry out period


Requires demineralized water; higher first equipment and operating cost


Possibly lower RH accuracy due to continued adiabatic process even after demand signal stops (media still dries)


20-40% water waste due to evaporation efficiency


Possible odors


Large system footprint


Maintenance to replace wetted media


Higher equipment cost vs. SKV


To learn more about both systems, visit our website.


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David Wong

Technical Support – Humidifiers

Contact him at this email address david@neptronic.com