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A cold plunge only works if it is cold on the morning you do not feel like it. That is the entire argument for a chiller: a tub filled with ice is a project each time and a chilled plunge is a decision that takes ten seconds, and the difference shows up in how many times a month it actually gets used.
The SaunaPlunge Peak Plunge is a stainless steel plunge with an integrated chiller at £4,725. It holds temperature continuously, filters the water, and is designed to sit outdoors alongside a sauna — the contrast between the two is the point, and it is why the pairing is the centre of the wellness range.
Decide on the temperature you will actually use. Most people settle between 8 and 12°C for two to four minutes; below 5°C is for the experienced and buys less benefit than the extra discomfort suggests. A chiller lets you set it and leave it, which matters more than the bottom of its range.
Site it for the exit, not the entry. The thirty seconds after you get out is when you are barefoot, cold and not thinking clearly — so a level, non-slip surface, a handhold, and a short walk to a towel and a door. Straight from a sauna to a plunge and back is the arrangement that gets used.
Plan the power and the water. A chiller needs a permanent outdoor-rated supply, ideally its own RCD-protected circuit installed by a qualified electrician, and the unit needs to be filled and occasionally drained — so proximity to a tap and somewhere for the water to go both matter.
Never plunge alone if you are new to it, get medical advice first if you have a heart condition, high blood pressure or are pregnant, and get out at the point of shivering rather than pushing on. Cold water does the work in the first few minutes; the rest is risk without return.