In general I am very concerned about what is considered cold. Is this just unheated? Depending on the time of year the relative temperature of unheated has a b

In general I am very concerned about what is considered cold. Is this just unheated? Depending on the time of year the relative temperature of unheated has a broad range where I live. I’d be a lot more comfortable if this set a tight bound on the water temp. If it did and I missed it sorry.