Luxuriously Softened Water, 24/7

Thanks to its unique and patented twin-cylinder design, the Minimax softener provides softened water 24 hours a day, 7 days a week - with no interruptions, even during regeneration.

Unlike single-cylinder systems, which stop softening while they clean themselves, Minimax keeps one cylinder working while the other regenerates. That means no gaps, no switching to hard water mid-shower, and no drop in performance.

Completely Softened Water - Guaranteed!

But the Harvey's Minimax doesn’t just offer constant soft water - it offers completely soft water, all of the time, which is something no other softener can claim.

Here’s why that matters:

Water softeners are often considered “effective” even when they leave 5 to 7 drops of hardness behind on the American grains test scale (equivalent to around 80–120 ppm). That’s still technically within the “soft” range - but it’s far from ideal, especially for dry skin, stored water systems, or gravity-fed plumbing, or if you live in a softer water area like parts of Sussex!

The Harvey is the only softener in the world that guarantees a maximum of just one drop of hardness - that’s 17 ppm. In most cases, it actually achieves zero hardness all of the time. That’s not just soft. That’s exceptional.

It’s able to do this because, unlike many competitors, it’s designed specifically for the British water systems - not adapted from American plumbing models, where flow rates are much higher and pressures are very different. Many softeners can’t measure flow accurately below 10 litres per minute, which is where most household usage happens. The Minimax can - and that’s what makes it so consistent.  This is in part thanks to a patent they bought from the American manufacturer, Hague, who come close to completely soft all of the time.

So if you’re looking for a softener that’s gentle enough for sensitive skin, perfectly suited to UK homes, and guaranteed to provide completely soft water, the Harvey Minimax is the one we recommend every time.