Nearly all combination ovens will need some sort of calcium treatment unit. It is not recommended that you use a water softener, as this will affect the stainless steel. These calcium treatment units are suitable for most of the ovens on the market, however there are variations on the number of required ports, so please call us to check this. These CTUs come with a water test kit which can be returned to the manufacturer, who will then send you a reminder when the filter is due for replacement, based on water hardness and oven type.
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