Minimax M3 Water Softener
Say goodbye to limescale and hello to pure comfort with the Minimax M3 Water Softener. Engineered in the UK and built to last, the M3 uses advanced twin-cylinder technology to deliver softened water 24/7 – no downtime, no fuss. It operates without electricity, relying entirely on water pressure, making it one of the most energy-efficient systems available. Compact enough to fit under your kitchen sink, it's designed for modern Irish homes and families looking to protect their plumbing, appliances, and skin from the harsh effects of hard water.
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Uses block salt for quick and mess-free refills
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Smart metering regenerates only when needed – saves water and salt
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Experience softer skin, shinier hair, and cleaner surfaces throughout the home
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Enjoy better-tasting water in every cup and glass
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Prevents limescale build-up in your boiler and appliances
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Low maintenance – no servicing needed, just top up salt
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Backed by a 10-year parts warranty and 40+ years of trusted engineering
Explore the Features
✅ Non-electric operation – Runs on water pressure alone with no need for power or programming.
✅ Twin-cylinder design – Delivers uninterrupted soft water, even while regenerating.
✅ Space-saving build – Compact enough to fit under most kitchen sinks or in tight utility spaces.
✅ Smart regeneration – Uses minimal water and salt, only when needed.
✅ Proven durability – Factory-tested through over 1 million cycles for long-lasting reliability.
✅ Easy-load block salt – Lightweight 4kg blocks are simple to handle and mess-free.
✅ Sustainable cabinet – Made using up to 62% recycled plastic for a greener choice.
Soap & Hardness Water Test
Block Salt: Small‑But‑ Mighty Fuel
The Minimax M3 Water Softener uses block salt because it’s easy to handle, store, and load compared to traditional tablet salt. Block salt dissolves slowly during regeneration, creating a strong brine that efficiently recharges the resin. This process helps remove hardness minerals from your water, ensuring a continuous supply of soft water with minimal maintenance.
How the Minimax M3 Water Softener Works
The Minimax M3 uses twin resin cylinders to deliver soft water 24/7. Hard water flows through the resin, which removes limescale-causing minerals through ion exchange. When one cylinder needs to recharge, the system flushes it with a salt solution while the second cylinder continues softening. It works automatically and runs on water pressure—no electricity or timers required.
The Minimax Difference
“Soft water isn’t a luxury – it’s the smarter default.”
Stop scrubbing: No more chalky shower doors or kettle flakes.
Protect the boiler & appliances: Limescale‑free heat exchangers run up to 10 % more efficiently, cutting energy bills.
Skin & hair love it: Sheffield University trials show softened water reduces the irritants that aggravate eczema and dry scalp
Spend less on detergents: Soft water improves soap performance, so you use up to 50 % less product.
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Our installer with arrive with everything needed and complete the installation at your house. You don’t need to worry about anything.
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Once you are ready to go ahead with the system, simply let us know and we will allocate a suitable installation date for you.
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Our installer with arrive with everything needed and complete the installation at your house. You don’t need to worry about anything.
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With a water softening system in your home, start enjoying the benefits of soft water in your home. You’ll never have to worry about limescale again.
Ready to Experience the Minimax Difference?
Book your consultation today or request a personalised quote. See how the Minimax M3 Water Softener can deliver softer water, better skin, and longer-lasting appliances – all without any hassle.
What clients say
Product Enquiry
Minimax FAQs
Will it make water taste salty?
Will it make water taste salty?
No. The amount of sodium added during the softening process is very small and well within safe drinking standards. If preferred, a separate drinking water tap can be installed for untreated mains water.
Does the Minimax M3 require electricity?
Does the Minimax M3 require electricity?
No, the M3 runs entirely on water pressure. It has no electrical components, making it reliable, low-maintenance, and ideal for energy-conscious households.
What if I move?
What if I move?
Unit is self‑contained; your plumber can reinstall it in the new house within a morning.
Will it fit under my sink?
Will it fit under my sink?
Yes. The M3 is compact (490mm H × 460mm D × 206mm W) and designed to fit under most kitchen sinks. A quick measurement check can confirm suitability.
How much salt will I need to use?
How much salt will I need to use?
On average, a household uses around one 4kg block of salt per person per month, though this can vary depending on water hardness and usage.
What maintenance does it need?
What maintenance does it need?
There’s no servicing required. Just top up the block salt when needed, and the unit takes care of the rest automatically.
What happens during regeneration?
What happens during regeneration?
The resin tank flushes out captured minerals using a salt solution (brine). Thanks to the twin-cylinder design, one tank continues to supply soft water while the other regenerates.
Is the Minimax M3 suitable for homes with a septic tank?
Is the Minimax M3 suitable for homes with a septic tank?
Yes. It uses a low volume of water and salt during regeneration, making it safe for use with septic systems.
Can I still use my boiling water or filter tap?
Can I still use my boiling water or filter tap?
Yes. The M3 is compatible with boiling water taps and 3-way filter taps. We can help configure the best setup during installation.
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