Washing Powder

Standard washing powder or liquid contains extra agents that protect the washing machine and help to improve the overall cleaning.Soap is the most effective natural, chemical free detergent and therefore works perfectly in soft water as the cleaning effects are improved, and less of it can be used for a better wash. The Minimax washing powder uses a simple formula that has been especially designed to work with a water softener so that you get the full benefit of its cleaning effects.

  • Fits easily in kitchen cupboard
  • Suitable for 3 bathrooms
  • Twin tank design guarantees 24/7 soft water
  • Low salt consumption
  • Made from recycled plastic
  • 10 years guarantee

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Why buy our washing powder?

The powder is a super concentrated non-bio that comes in an easy pour, no measure dispenser to ensure that you use the correct amount each time without spillage. The benefits include brilliant whiteness, softer and brighter clothing, kinder to skin and is better for the environment.

Europe’s No. 1 in Water Softening Technology

The Minimax range is manufactured by Harvey Water Softeners, the number one manufacturer in England and Europe for the domestic market.

With over 37 years experience, the family run business sells water softeners in the UK through a network of professional, independent and carefully selected local water treatment businesses. Your Minimax dealer is expertly placed to give you the best advice for your home and needs.

Manufacturing Products that Work in Every British Home

All Minimax water softener systems are designed and hand-built in Woking, Surrey by a dedicated team of individuals. If you would like to arrange a tour of the factory and meet our team, contact us and we will invite you in.

The Minimax range is expertly designed to be suitable for every type of home, plumbing system and even high flow megaflow cylinders and multiple power showers.

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See how we compare

Read our comparison guide and see just how great our product is.

How it works

The Minimax M3 Water Softener is a revolutionary water softener. Compact enough to fit under your kitchen sink and supply soft water to your whole house.


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10 year guarantee

Designed by the leading manufacturer

Made in the UK

Made from recycled plastic

What our customers say

“We’ve had a Minimax for about a month now and we’re wondering why we didn’t get one years ago. With the water being scale-free, faucets, taps and sinks get shiny with just a wipe and no cleaning detergent.

We just had a Minimax M2 installed about 10 days ago after moving to the Reading area from South Wales. We really struggled with the hard water marking of sanitary ware and taps and the difference it made with detergents etc. It is probably one of the best items we’ve bought as it’s made such a difference.

We had our old water softener for 14 years, and when we asked our supplier for a new one, this is what we got, and it’s brilliant. A non-electric item, it just does its job without having to worry about power failures, all you do is pop in the salt blocks.