Indoor Pool Dehumidifier Calculator

What to do with your result

Once you’ve got your estimated litres per day (for example, around 80 L/day):

• You can use it to shortlist suitable dehumidifier models in that capacity range.
• You can see why some pools need surprisingly large dehumidifiers – warm water, high humidity and heavy use all push the litres/day figure up.

If you already have a dehumidifier in mind, you can check whether its rated capacity is in the same ballpark as the calculator’s suggestion.

Remember that real-world factors like poor insulation, large glazed areas, frequent door openings and heavy bather loads can all increase the moisture load beyond the calculated figure, so it’s always safer to size slightly on the generous side.

Why we often recommend two dehumidifiers instead of one

Where space and budget allow, we usually prefer installing two dehumidifiers rather than a single big unit:

• Backup if one fails – if one unit goes down, the other can still hold the humidity down instead of the room instantly misting up.
• Easier maintenance – you can service or repair one machine while the other keeps running, so the pool hall doesn’t turn into a steam room while work is carried out.
• Smoother control – staging between two units can give more stable humidity control and can help with efficiency over the year.

The calculator gives you the total litres/day requirement – from there we can help you decide whether that should be covered by one larger unit or two smaller units sharing the load.