Important Considerations When Purchasing a Wall-Mounted or Floor-Standing Swimming Pool Dehumidifier

Proper air handling in indoor swimming pools is critical, not only for comfort but also for safety and the longevity of the building. Excess humidity can lead to condensation, corrosion, mould growth, and structural damage. Installing the right dehumidification system, whether wall-mounted or floor-standing, ensures a healthier pool environment and compliance with legal safety standards.

When selecting and installing a pool dehumidifier, the following considerations are essential:

1. High Glazing Volume in the Pool Hall

Pool halls with extensive glazing, such as large windows or glass walls, are more susceptible to condensation due to glass’s lower thermal insulation. While dehumidifiers manage humidity levels, some condensation may still appear on glazed surfaces. It’s important to factor this into the design and maintenance strategy.

2. Large Pool Hall Volume

In spacious pool halls, a single dehumidifier may not provide uniform air distribution. Installing multiple units can help maintain consistent humidity levels throughout the space, preventing condensation in “dead spots.”

3. Dehumidifier Placement and IET Regulations

Electrical installations in pool areas must comply with the Institute of Engineering and Technology (IET) 18th Edition regulations and British Standard BS 7671. All equipment should be installed at least 2 metres away from the pool edge (Zone 2). Non-compliance can result in legal penalties, insurance issues, and potential hazards.

4. Plumbing Considerations

Dehumidifiers generate condensate that must be properly drained. Ensure a secure connection to the condensate socket and direct waste water to an appropriate drainage point.

5. Electrical Requirements

To minimise pool water evaporation, maintain air temperature approximately 1°C above the pool water temperature when the pool is in use. Dehumidifiers may include either a low-pressure hot water coil or an electric heating element. Confirm that the electrical supply can support the chosen system safely.

6. Ventilation and Air Quality

Introducing controlled fresh air through a heat recovery unit helps reduce chloramines - chemical by-products of chlorine and ammonia from bathers. Trichloramine, in particular, causes the familiar "chlorine smell" and may irritate skin, eyes, and the respiratory system. In domestic pools with proper sanitisation and showering routines, chloramine levels are typically low, but adequate ventilation remains crucial.

Need to purchase a swimming pool dehumidifier but unsure which model is the correct size for your pool and pool hall? Contact the All Swim team today for a free, no-obligation sizing service. Call us on 029 2070 5059 or email sales@allswimltd.com and we’ll be happy to help.