What information do I need to properly size a dehumidification system for an indoor pool?

Most importantly, we need to know the surface area of all the pools in the space and the water temperature(s). In addition, we need the room dimensions and the space temperature. From this information, we can determine the evaporation rate, the outside air requirement and the air change rate or circulation requirement. It is also necessary to know the geographic location in order to determine the impact of the outside air on the load.

To ensure that a system has enough heating and/or cooling capacity for the load, you would also need heating and/or cooling load calculations for the room. In general, particularly in residential and hotel/motel applications, there is enough cooling capacity to meet the load, by virtue of the dehumidification tonnage. Auxiliary space heating is almost alway required in temperate to northern climates.