How to Stop Condensation in a Pool Room?

Condensation in an indoor swimming pool area is very common because of the warm water surface, high evaporation, and cooler surrounding surfaces. If it's not managed, it can lead to mold, corrosion, and structural damage.

Here's how to stop or at least control condensation in a pool room:

1. Control Temperature & Humidity

Air Temperature: Maintain an air temperature 2–4°F warmer than the pool water. This reduces evaporation and condensation. For example, if the pool water is at 80°F, the indoor air should be at 82–84°F.

Relative humidity: Maintain relative humidity (RH) at 50–60%. If the humidity is too high, it will cause condensation, mold, and corrosion. If the humidity is too low, it will cause uncomfortable air and high evaporation.

2. Ventilation & Air Circulation

Install a dedicated HVAC or dehumidification system designed for natatoriums (pool rooms).

Use air distribution ducts to push warm, dry air across exterior windows and walls, which prevents condensation on cold surfaces.

If you want to avoid dead air spots, use fans or well-designed ducting to help circulate air evenly.

3. Dehumidification Solutions

Commercial dehumidifiers are the best solution. Refrigerant dehumidifiers extract and condense air moisture into water, then return warm, dry air. Preair provides you with the ceiling mount dehumidifier for indoor pool. Do not hesitate to contact us for a professional solution.

Some recover heat from the moisture-removal process and recycle it to warm the pool water or room air. This is an energy-saving circulation.

Portable home dehumidifiers usually won't keep up with pool rooms—they need high-capacity, continuous-drain units.

4. Building & Surface Protection

Use vapor barriers in walls, ceilings, and floors to stop moisture from migrating into the structure.

Install thermal breaks and insulated glass windows to minimize cold surfaces where condensation forms.

Use water-resistant finishes (ceramic tile, epoxy coatings) instead of drywall or wood.

5. Extra Tips

Pool covers: Use an automatic cover when the pool isn't in use—this cuts evaporation dramatically.

Regular maintenance: Clean air filters, check ductwork, and service dehumidifiers/HVAC systems.

Monitor humidity: Hygrometers let you know if RH is creeping above 60%.

In short

Balance air & water temperature, use proper ventilation with a pool-room dehumidifier, and protect building materials.