If you have a cold plunge, DIY or not, the summer months mean a constant battle with condensation. One of the primary culprits is the filter housing - simply because of the surface area of this component.
In the past I turned to insulated water bottle carriers to slip over the filter housing and it did make a noticeable difference. These sleeves are sized specifically for the recommended filter housings on DIY cold plunges and will certainly help combat condensation on your build.
Will this completely solve your condensation problem? Unfortunately, no... but it does make a difference.
First time using an Inline ozone generator. In service only a short time. Water is crystal clear. I shower before plunging for 20 minutes at 39 to 42. Love it.