Where to position a Swimming Pool Dehumidifier

Experience tells us that customers tend to approach buying a swimming pool dehumidifier with a great deal of uncertainty and are unsure what to buy and what is required of them to make sure that the dehumidifier works.  So I thought that with Spatex coming up I would write a few short blogs to try and help.

First of all if you have a swimming pool, swim spa or jacuzzi indoors then you must have a dehumidifier, if you don’t then the moisture from the water will create lots of serious problems in the room in terms of mould and condensation and could peel paint off the walls and cause structural damage.

So the case for the dehumidifier is strong, we now just need to understand where to put the dehumidifier.

You have three options, the cheapest is to hang the dehumidifier on the wall in the pool hall, the next option would be to put the dehumidifier in an adjoining room and duct the air inlet and outlet through the wall and the final option and the most expensive option, is to duct the air in at various points around the pool hall from a plant room.

  • Wall mounting – cheapest option
  • Through the wall (TTW) – dehumidifier in an adjoining room, duct straight through the wall (see photos below)
  • Ducted – air is ducted throughout the room for even distribution – most expensive option
Through the wall swimming pool dehumidifier from the poolside

This is what a through the wall installation looks like from the pool side. Air goes in the bottom and out of the top vent.

Meaco 500i through the wall dehumidifier for swimming pools

Side view of a Through The wall dehumidifier showing the ducting and grills.

Cost should not be the deciding factor between the options, safety and compliance with electrical regulations.  Having a 220 – 240V appliance in a area where there is water and you will be wet is a risk and you have to let the safety of the pool users to be the overriding factor.

The chart below gives you some ideas with regard to what can and cannot be done.  If in doubt always consult an experienced electrician who understands the special requirements of wet areas.

Guide to the installation of a swimming pool dehumidifier

Click on the image to see a larger version

Once you know where you can safely position the dehumidifier you can then decide which of the three types you are going to buy.  In terms of positioning putting the dehumidifier at the narrow end of the pool is idea for the best air distribution and you want to make sure that you have enough clearance on all sides.  You want to make sure that you have enough space for 200mm on all sides.

The clearance is important because if for example the top of the dehumidifier is too close to the ceiling then the dry air coming out of the top of the dehumidifier will bounce off the roof and come straight back down and into the bottom of the dehumidifier.  The dehumidifier will then be recirculating its own dry air back into itself and it will think that it has nothing to do and will not dry the damp air from the pool.

Hopefully this will give you some food for thought and will give you a clearer picture of what is possible and help you to decide which swimming pool dehumidifier is best for you.  Please do feel free to contact us via email or phone with any questions that you might have, our office number is 01483 234900.

About Chris Michael

Chris Michael has been in the humidity business since 1989 and founded Meaco in 1991. Much of his knowledge comes from the numerous years spent working with museums and art galleries across Europe controlling and measuring relative humidity to protect the works of art. He is a regular guest speaker on relative humidity at the British Library and is always happy to pass on his knowledge in a practical way to his customers. Outside of Meaco Chris is married with four children and is very active in the local community, especially through rugby and swimming. Further thoughts can be found on Google+ and Twitter
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