WrekinWater offer a range of genuine Harvey/Culligan Twin Tank water softener parts. We stock key items for the most popular H20 Domestic Twin Tank Models. We can source H25 1in Commercial Softener but these are to order. 

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Frequently asked questions

We can source H25 1in commercial softener parts, but these are supplied to order rather than held in regular stock — contact us to arrange.

Harvey water softeners share their design lineage with Culligan's twin-tank systems, so parts are often cross-compatible — check the specific listing to confirm fit for your model.

Many parts — seals, O-rings, hoses — are straightforward DIY replacements. Larger jobs are still manageable for a confident DIYer, but a qualified water treatment engineer can help if you're unsure.