What is the Best Harvey Water Softener Model?

Choosing the best Harvey water softener can feel overwhelming with so many models available—from the TwinTec S4 to the Crown, Minimax, Arc, Cobalt, and Big Blue. While they all offer high-quality performance, one model stands out for its blend of efficiency, affordability, and long-term value: the Harvey TwinTec S4. Here’s a clear guide to why it’s our top pick — and what sets the others apart.

the best harvey water softener model

What Are the Different Harvey Models?

Harvey has produced several models over the years, each designed for different household sizes, budgets, and needs. Here’s a quick overview:

  • Harvey Crown – An older, compact model for small to medium homes. Great entry-level unit but less efficient than newer models.
  • Harvey Minimax – A premium softener with similar technology to the TwinTec S4. Performs well but comes at a higher price.
  • Harvey Arc – A newer model with sleek styling and solid performance, but with only a 3-year warranty as standard.
  • Harvey TwinTec S4 – The flagship domestic model, combining efficiency, performance, and excellent value.
  • TwinTec Cobalt – A newer upgrade featuring smart monitoring with Wi-Fi and eco controls. High-tech but more expensive.
  • Big Blue – Designed for large homes or small commercial setups. Extremely powerful but excessive for standard households.

The Best Harvey Water Softener: The Harvey TwinTec Series 4

Why the Harvey TwinTec S4 Comes Out on Top?

  • - Best Value – Premium performance without the higher price tag of tech-focused models.
  • - Top Efficiency – Uses just 300 g of salt and 17 L of water per regeneration.
  • - Outstanding Flow Performance – Handles 56 L/min, ideal for homes with multiple bathrooms.
  • - Compact and Convenient – Fits easily under the sink or in a utility cupboard.
  • - Reliable & Supported – Backed by a 10-year parts warranty and 2 year labour warranty and known for durability.

Harvey Water Softener Model Comparison

Here’s how the main Harvey water softener models compare, with the TwinTec S4 leading the range:

Model Best For Why It Stands Out or Falls Short
TwinTec S4 Most family homes and households, from small homes to larger family properties The Best price online, top efficiency, high flow rate, compact design, and 10-year warranty – the best balance of performance and value.
Crown Smaller households Lower flow rate, less efficient, older resin, shorter warranty
Minimax standard family homes Same performance as S4 but higher cost
Arc Modern styling, uses smart phone app Limited warranty of only 3 years, much higher cost
TwinTec Cobalt Tech-savvy users, eco monitoring Not available online - sold in dealer channel areas only
Big Blue Large homes or commercial setups (5+ bathrooms) Too big for standard family homes.

How much is a Harvey water softener?

Buying a Harvey non-electric water softener online has never been easier or more affordable.

When comparing the specification of the Harvey TwinTec S4, Harvey Arc and Harvey MiniMax - you'll find the systems have an identical spec - meaning it all comes down to price point, service and company reputation.

Harvey Water Softener Prices

Here’s a quick look at the starting prices for the main Harvey water softener models:

Model Price
TwinTec S4 £1,124.99
Crown £995.00 (older model (18+years old), lower flow rate and shorter warranty)
Minimax £1,299.00
Arc Harvey Only Quotation
TwinTec Cobalt £1,595.00
Big Blue £1,599.00

Harvey Water Softener FAQs

Which Harvey water softener model is the best?

For most households, the Harvey TwinTec S4 is the best choice. It’s compact, highly efficient, easy to maintain, and comes with a 10-year warranty, making it the best balance of performance and value in the Harvey range with the best price tag.



What is the difference between the Harvey Arc and the TwinTec S4?

The Harvey Arc has a sleek, modern design and good performance, it has a smart phone app, but it comes with a shorter 3-year warranty and higher price tag. The TwinTec S4, on the other hand, is more efficient, more reliable, and backed by a 10-year warranty, making it a better choice for most households.



Do I need a Big Blue model for my home?

Not usually, unless you have a large home with 5 or more bathrooms. The Big Blue is designed for very large homes or commercial setups. For standard family homes, the TwinTec S4 or TwinTec Cobalt will deliver more than enough performance.



Is the TwinTec Cobalt better than the S4?

The TwinTec Cobalt includes advanced features like Wi-Fi monitoring and eco controls, but it is only available via dealer only networks.



How long will a Harvey water softener last?

With proper care and regular servicing, a Harvey water softener can last 15+ years. The TwinTec S4 is particularly known for its durability and low maintenance requirements.

Harvey TwinTec S4 Water Softener Reviews

Harvey Water Softener Review

Mark Baker


Silky Smooth Softened Water

Recently purchased a TwinTec water softener and I’m delighted with the softened water - it’s, amazing how silky the water is!

customer testimonial

Lousie Bourne


Delighted with the S4 & Super Service

Delighted with the S4 and super service from North East Water Softeners, wish I'd done this years ago.

water softener review

Ghulam Mustafa


I Highly Recommend...

Jenny & Hazel from the sale team were brilliant. Best purchase from best company. Thank you



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Best Water Softener in the UK 2025: Harvey TwinTec Series 4 water softener

The Harvey TwinTec Series 4 Water Softener. 2 years Replacement & 10 Years Parts Warranty - regardless of your installer.

In Stock Unavailable

Regular price £1,149.99 £1,450.00 |  Save £300.01 (20% off)

Harvey Water Softener Discount Code. Buy the Harvey TwinTec S4 now for only £1124.99. Use code: HARVEY to save an extra £25 off. Shop the Best Water Softener UK of 2024. Please note - salt is sent separately from the water softener and therefore will arrive at different times. Salt delivery...
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