Harvey Minimax Innova

Smart, sustainable, and seamlessly connected

Proof that you don’t need a big space to enjoy big benefits — compact, discreet, and beautifully designed to fit in with modern living.

The Minimax Innova takes water softening to the next level. It is the most advanced softener ever produced by Culligan Harvey Water Softeners—engineered for modern homes and eco-conscious living.

Built on decades of trusted twin-cylinder performance, it adds 'IoT' iLid connectivity, recycled materials, and precision-engineered mini-curve salt blocks, making it the world’s first eco-friendly water softener.

It’s everything the MiniMax M3 offers — and more.

Why Choose the MiniMax Innova?

  • Smart iLid Technology: Monitors salt levels, battery life, with app connectivity sending updates directly to your device and even connects with Alexa
  • Eco-Friendly Design: Made from 62% recycled materials with 38% less plastic
  • Continuous flow rate: 56 litres per minute
  • Peak flow rate: 65 litres per minute
  • Ultra-low water usage: Just 17.1 litres per regeneration
  • Mini-Curve salt block: For better capacity & guaranteed purity
  • Ideal for up to 10 people with two bathrooms
  • No compromises between flow rate and efficiency
  • Includes a 10-year manufacturer-backed parts guarantee
  • Compact dimensions: (W)206mm x (H)495mm x (D)435mm
The 5th Generation mini-curve softener has quickly become the market leader and is our most advanced softener yet – combining eco-friendly design with smart technology.

Advanced Features

Many features of this product make it unique, so let's look at those in detail:

Mini-Curve Block Salt

Innova’s patented salt arcs offer easier handling, improved purity (99%+), and better protection from poor-quality imports.

They’re lighter, fit more inside the cabinet (holding 4 blocks vs 2), and cost less more than traditional blocks.

Best of all, they protect your softener guarantee from the damage caused by using the wrong salt!

Lighter, purer, and easier to store — the curved salt is smarter, cleaner, and better for your softener.
How do I refill the Mini Curved Salt? 1. Take off the clear lid, unwrap the Mini Curve salt and place it into the space. Simply position with the Mini Curve salt against the back of the softener. 2. Pop the lid back on. Your home will continue to enjoy softened

Reduced Carbon Footprint

New recycling technology, coupled with its clever design, reduces the Minimax Innova’s footprint on our planet by cutting plastic usage by a massive 38%. It is also made from 62% recyclable materials, including recycled Polypropylene from a clean source, making it the most environmentally friendly cabinet on the market!

MiniMax Innova doesn’t just care for your home — it’s built to tread lightly on the planet too.

Smart iLid + myHarvey App

Monitor salt levels, battery life, wi-fi signal and more - all from your phone or tablet.  Receive alerts, order salt, and even request service, right from within the app!  (Powered by 4 x AAA batteries - no electricity required).

Smart-Shuttle Metering & Accurate Flow Sensing

Designed for British plumbing, Innova measures from the tiniest drips to powerful unvented systems — ensuring maximum efficiency with minimal waste. Flow rates stay high, pressure drop stays low.

Advanced Resin Bead Formula

Top-grade, chlorine-resistant resin — guaranteed for 10 years. It softens more efficiently and lasts longer, even in challenging water conditions.

Industry-leading Impact Testing

Tested to 1 million cycles at 15 bar, the Innova surpasses every industry standard for pressure and performance — built for decades of use.

Twin-Cylinder, Always-Soft Design

No downtime, no hard water breaks — just beautifully softened water 24/7, thanks to its dual-cylinder non-electric system overseen by the amazing William Sargeant at Harvey Softeners

Non-Electric & Backwash-Free

Runs on water pressure alone. Unlike imported systems, it doesn’t require unnecessary backwashing — saving water and helping you meet future efficiency standards.

Built in Britain, Trusted by Experts

Manufactured in Woking, Surrey and hand-assembled by engineers who genuinely care.

Having walked around the factory hundreds of times while managing the dealer network at Harvey's, I got to know the factory team personally very well. I'm very proud that my business, Hydroworks, has been selected as just one of 28 companies in the UK to be an Elite Dealer of the Harvey Softener brand and that we can bring you the best of the industry’s technology.

While we are independent and sell every make and model of softener to our customers, the litmus test for what Hydroworks recommends is based on what I would put into my own home, or my folks' home for that matter (or my in-laws!!).

That’s the power of softened water — gentler on sensitive skin, better for bath time, and kind to your little ones.