Cold plunge tubs and ice baths
Why composite and not a plastic tub
Cheap plastic tubs sold for ice bathing last a season. The trouble starts in winter: thin plastic turns brittle in frost, warps in the sun and cracks after two years outdoors.
Our tubs use the same composite shell as the heated hot tubs – laminated composite with a gelcoat, a metal frame and thermo wood cladding. The only difference is that there is no stove. From the outside it looks like a hot tub; inside it keeps its shape after years in the open.
Water is also far easier to keep clean in a composite shell – the surface is smooth and dirt does not cling to it.
Tubs without cooling - fill and use
ICE TUB - with a cooling and heating element
Which size to pick
For one person the smallest oval models are enough. They fit on a balcony or in a bathroom and pass through ordinary doorways.
For two, choose a model around 98 cm wide, or the corner version – that saves space because it sits in the corner of a terrace.
For a sauna or a whole family, the large COMFORT tubs of 1 000 to 1 700 litres make sense. Several people can dip one after another without the water losing its temperature.
Not sure? Send us the dimensions of your space through the contact form and we will recommend a model.
How much ice you need
In winter, none – the water outside drops to zero on its own. From November to March the tub stays below 10 °C without any help.
Summer is different. Cooling 250 litres from 20 to 10 °C takes around 25 kg of ice; 600 litres takes about 60 kg. That is why smaller tubs are used all year while large ones are more of a cooling pool in summer than an ice bath.
If you want cold water in summer without ice, you need a chiller. Models in the ICE TUB range include one as standard – they hold the set temperature all year and can even warm the water in winter.
Frequently asked questions
Can the tub stay outdoors through winter?
Yes, composite and thermo wood are built for year-round outdoor use. Do not leave it full of water over winter if you are not using it, though – ice pushes against the walls. More in Whirlpool and hot tub in winter.
How often should the water be changed?
Every two to three weeks with regular use. Bacteria multiply slowly in cold water, so a minimum of chemicals is enough. If the tub stands in the sun and warms up during the day, change it more often.
Can heating be added later?
Yes. We supply a 45 kW external stove for every model, connected with hoses. A cold tub then becomes a heated one. See hot tubs with an external stove.
Will the tub fit through a door?
The smallest oval models are 68 to 79 cm wide and pass through a standard 80 cm doorway. Larger round models have to go outdoors or be moved in before the interior is finished.
