DCA offers Dehumidifiers in two basic air flow configurations, horizontal and vertical.  Each has its advantages and normally the size of the equipment room and/or the orientation of the ductwork dictates which is preferred especially if this is a replacement dehumidifier. 

Normally a horizontal dehumidifier replaces an existing horizontal dehumidifier and the same is true for a vertical dehumidifier. 

In general a vertical dehumidifier normally sits on the floor and has a slightly smaller footprint, than a horizontal dehumidifier, but is much taller.  A horizontal dehumidifier can set on the floor or be suspended in a mechanical room.  Horizontal dehumidifiers also have the advantage of having the discharge air flow configured to be straight thru, bottom or top.  

DCA Vertical Dehumidifiers

Vertical dehumidifierDCA vertical dehumidifiers are preferred when mechanical room floor space is limited and there is adequate height above the dehumidifier to accommodate the duct system and any add on components such as duct heaters. 

Keep in mind that adequate space around the perimeter of the dehumidifier must be provided for future maintenance. All vertical dehumidifiers can have either top or horizontal air discharge with the return being on the right or left side of the unit. 

Top or horizontal air discharge and right or left hand return must be determined when ordering the unit as they are not field convertible.  Make up outdoor air ductwork to the dehumidifier, if required, also has to be considered for the installation. DCA offers a wide range of models from 1.5 nominal ton (650 cfm) to 8.0 nominal tons (3600 cfm) to meet most applications.

DCA Horizontal Dehumidifiers

DehumidifierDCA horizontal dehumidifiers are used in all outdoor rooftop applications.  They are also preferred when they can be suspended in a mechanical room thus preserving floor space.

They also have the advantage of having straight thru, bottom or top discharge air flow (not field convertible) available to adapt to existing ductwork. In certain applications one long side and the top of the dehumidifier can be installed against a wall or ceiling to converse space. 

The long side with the access doors and the electrical compartment door must have at least 36 to 48 inch clearance for service.  Horizontal dehumidifiers normally require greater installation length especially if the air flow is straight thru. 

If the discharge air flow, out of the dehumidifier, must be turned 90 degrees immediately either up or down, optional top or bottom discharge must be specified. The entire line of DCA dehumidifiers 1.5 nominal ton to 30.0 nominal tons are available in the horizontal configuration.   

Both horizontal and vertical DCA dehumidifiers have their specific place when planning a dehumidifier installation.  This blog only touches on the basic areas to consider which would be appropriate. Consult the installation and service manual, on our web site or contact the DCA factory and discuss your project with one of our sales engineers before making a decision.

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With decades of experience in the manufacture of dehumidifiers, DCA is well-versed in guiding consumers through the selection process. Ready to get started? Request a free project analysis today.

Topics: Dehumidifiers