Company details for Combimate


  • 0118 (Display number) 0118 969 1611
Unit 1 Woodley Park Estate
59-69 Reading Road
Reading Berkshire RG5 3AN United Kingdom

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About us

A product division of Cistermiser Ltd, Combimate are a leading provider of limescale prevention devices for residential or light commercial applications.  Based in Berkshire, our company specialises in supplying products which can protect whole house water supplies or single appliances (such as boilers) against the damaging effects of scale formation and resultant corrosion, providing peace of mind for our homeowner clients.

Over the years, our company has gained an excellent reputation for our money-saving limescale prevention devices, which employ phosphate dosing to safely treat water supplies and prevent formation of limescale.  Our proven products are designed to remove the need for chemical de-scaling products and are able to provide effective protection that is reliable and long-lasting.  Combimate devices can protect domestic water systems against the harmful effects of both hard water limescale or soft water corrosion.

Designed and manufactured in the UK, Combimate is easy to install due to its compact size, configuration options and simple plumbing fittings, which allow for easy location and fitment by either a professional installeror competent DIY enthusiast.  Combimate models are available to suit 15mm or 22mm pipework.  Once installed, Combimate is easily refilled as required with a top-up of Combiphos - a simple task which only needs to be done annually and requires no special tools.  The active ingredient of Combiphos is phosphate, which is a 100% safe natural food-grade material and completely safe for human consumption, formulated to prevent limescale build-up and corrosion.

Combimate units (supplied complete with Combiphos starter pack) and individual Combiphos 800g refill packs can be purchased from leading UK plumbers merchants nationwide, or directly from Cistermiser Ltd via the company's online webstore.

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Latest Reviews


I installed my Combimate about six weeks ago, and it's been brilliant. Water tastes better and I'm pretty sure I've seen a reduced build-up of limescale. Many thanks to you and everyone there. I'm really so pleased how much better my water is!



Many thanks, your product (Combimate) has proven itself time and time again over the years.


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