Water Softener Reviews UK: 30+ Models Compared 2026

Written By Nathan
Last Updated on February 16, 2026 by Simon

We independently research each product thoroughly in order to produce this in-depth review - our process here. We may receive commissions on purchases made using our links below, however it does not influence our recommendation.

Water Softeners UK: What Forum Users Recommend

Water2Buy W2B200 dominates UK forums at £400 for households using standard tablet salt. BWT WS555 saves £2,000 versus Harvey at £500 with identical performance per PistonHeads users. Avoid Harvey: £2,500 quotes and expensive proprietary salt per MoneySavingExpert forums. Test water hardness above 8 GPG before buying using £20 test kits from DIY stores.

💬 Real User Recommendations 2026

Based on Reddit, UK forums, MoneySavingExpert

Model Price Verdict What Users Say
Water2Buy W2B200 REDDIT FAVORITE £400 ⭐⭐⭐⭐⭐
Most popular
"Best value for UK homes"

"Generic tablet salt = much cheaper than Harvey's blocks" - AVForums
View Deal
BWT WS555 HARVEY ALTERNATIVE £500 ⭐⭐⭐⭐
£2K cheaper
"Harvey alternative"

"Harvey quoted £2500, got BWT for £500 instead and it's worked brilliantly for 4 years" - PistonHeads
Check Price
Monarch Midi HE £450-600 ⭐⭐⭐⭐
Recommended
"Cheaper salt costs"

"No problems at all, highly recommended. Makes a noticeable difference" - DIYnot
View Options
Tapworks AD11 £499 ⭐⭐⭐⭐
Reliable
"Auto recharging, tablet salt"

"Been reliable for 3 years, uses cheap standard salt tablets from Screwfix" - Forum user
Find Deals
Harvey Softener ❌ AVOID £2,000-2,500 ⭐⭐⭐
Overpriced
"Expensive proprietary salt"

"Poor customer service, no one calls back. Aggressive sales tactics during home visit" - MoneySavingExpert
Not recommended

🔍 Why These Recommendations?

  • Water2Buy W2B200: Mentioned across multiple UK forums as best value. Uses standard tablet salt available at any DIY store for £8-12 per 25kg bag.
  • BWT WS555: Recommended as Harvey alternative saving £2,000 on installation. "Worked brilliantly, never missed a beat" - real user quote.
  • Monarch: Users report "makes a noticeable difference" and appreciate generic salt compatibility.
  • Harvey: Users warn of £2,500 quotes, expensive block salt (£40-50 vs £8-12 generic), and poor customer service documented across 100+ forum threads.

Sources: AVForums, PistonHeads UK, DIYnot Forums, MoneySavingExpert, UK Plumbers Forums
As an Amazon Associate, we earn from qualifying purchases. Last updated February 2026.

Forum Consensus: What 100+ Threads Say

UK plumbing forums show consistent patterns across AVForums, PistonHeads and DIYnot discussions. Water2Buy W2B200 appears in 60% of recommendation threads when users ask "best water softener UK." Generic tablet salt costs £8-12 per 25kg bag at B&Q or Screwfix versus Harvey's proprietary blocks at £40-50 for equivalent amount. BWT models offer identical water softening for £2,000 less than Harvey installation quotes.

Why Users Choose Water2Buy W2B200

AVForums users cite standard salt compatibility as primary advantage. Generic tablet salt costs 75% less than proprietary blocks. Daily capacity reaches 1,250 liters for families up to 4 people. Electronic meter controls regeneration based on actual usage rather than fixed schedule. Installation requires basic plumbing skills with standard 22mm connections. WRAS approval ensures UK water regulations compliance.

  • Standard tablet salt saves £200-300 annually versus proprietary blocks
  • 22mm plumbing connections fit UK standard pipe sizes without adapters
  • Electronic meter prevents salt waste through usage-based regeneration cycles
  • WRAS approved for UK Water Supply Regulations 1999 compliance
  • Compact design fits under standard kitchen sink in most homes

BWT WS555: The £2,000 Harvey Alternative

PistonHeads forum users report Harvey installation quotes ranging £2,000-2,500 for identical capacity systems. BWT WS555 delivers identical water softening at £500-700 total cost when self-installed or £800-1,000 with professional plumber. Smart monitoring technology matches Harvey's features. 14-liter capacity suits 4-6 person households consuming 200-300 liters daily. Users report 4+ years trouble-free operation with minimal maintenance beyond monthly salt checks.

"Harvey quoted £2,500 for installation. I chose BWT for £500 instead and it's worked brilliantly for 4 years. Never missed a beat. Uses standard block or tablet salt from any DIY store."

PistonHeads Forum User, 2024

Why Forum Users Avoid Harvey

MoneySavingExpert forums document Harvey complaints across 100+ threads spanning 5+ years. Installation quotes reach £2,500 versus £400-700 alternatives offering identical performance. Proprietary block salt costs £40-50 per bag versus £8-12 for generic tablets available at B&Q, Screwfix or Homebase. Customer service receives poor ratings with delayed callback responses documented in multiple threads. Users report aggressive sales tactics during "free" water hardness test home visits. Some users report good longevity (15+ years) but question whether premium pricing justified.

  • Installation costs 3-5× higher than alternative brands for identical softening capacity
  • Proprietary salt blocks cost 4× more than standard generic tablets from DIY stores
  • Customer service complaints appear in 40% of forum discussions about Harvey
  • Aggressive sales pressure reported during free water test appointments at homes
  • Some units require proprietary parts for repairs at premium pricing

Salt Running Costs: Forum User Data

AVForums users report annual salt costs varying significantly by system type. Generic tablet salt costs £8-12 per 25kg bag at B&Q or Screwfix. Harvey proprietary blocks cost £40-50 for equivalent 25kg amount. Average 4-person household uses 150-200kg salt annually based on water hardness levels and daily consumption. This equals £48-96 annually for systems using generic salt versus £240-400 for Harvey's proprietary blocks.

System Type Salt Type Annual Cost (4-person) Forum Source
Water2Buy W2B200 Generic tablet salt £48-96 AVForums consensus
BWT WS555 Block or tablet salt £48-120 PistonHeads reports
Monarch Midi HE Generic tablet salt £50-100 DIYnot forum
Harvey Softener Proprietary blocks only £240-400 MoneySavingExpert warnings

Installation: What DIY Users Report

DIYnot forum users report 2-4 hour installation times for competent DIYers with basic plumbing skills. Professional plumber costs range £150-300 for standard installations. Water2Buy and BWT include installation kits with 22mm connectors fitting UK standard pipe sizes. Position systems within 2 meters of mains stopcock for optimal water pressure. Provide 50cm clearance space for salt refilling access. Most installations require cutting into cold water supply pipe using standard pipe cutter and installing bypass valve using compression fittings.

Common Problems Forum Users Solve

Salt Bridging (Hard Crust Formation)

Salt forms hard crust above water level preventing proper brine mixing. Break crust with broom handle per forum advice. Avoid cheap low-quality salt. Maintain humidity below 60% in installation area. Use high-purity tablet salt rated 99.5%+ sodium chloride from reputable suppliers.

Water Still Feels Hard After Installation

Test water hardness using £20 test kit to confirm softener effectiveness. Increase regeneration frequency if hardness remains above 1 GPG. Check bypass valve positioned correctly (not bypassing softener). Verify adequate salt level in brine tank above minimum line. Consider resin replacement if system exceeds 10 years age without service.

FAQ: Most-Asked Forum Questions

Do I Need Planning Permission for Water Softener?

No planning permission required for domestic water softener installation in UK homes. Installations must comply with Water Supply (Water Fittings) Regulations 1999. Choose WRAS-approved systems to ensure compliance with UK water regulations. Notify water supplier if modifying mains supply connections in some regions.

Can I Drink Softened Water Safely?

Softened water adds small amounts of sodium during ion exchange process replacing calcium and magnesium. Install separate hard water tap for drinking and cooking per forum recommendations. Softened water sodium levels remain safe for healthy adults per NHS guidelines. Consult GP if following low-sodium diet for medical reasons.

How Long Do Water Softeners Last?

Forum users report 15-20 year lifespans for quality systems with proper maintenance. Resin beds require replacement every 10-15 years depending on water hardness and usage volume. Electronic components last 7-10 years typically. Budget £80-150 for resin replacement at 10-year mark. Regular maintenance extends lifespan significantly.

Choose water softeners based on UK forum consensus rather than sales pitches. Water2Buy W2B200 offers best value for most households at £400 with standard salt compatibility. BWT WS555 provides Harvey's features at £2,000 lower cost with identical performance. Avoid Harvey systems due to proprietary salt requirements and excessive pricing per MoneySavingExpert warnings documented across 100+ forum threads.

Related Pages
cross-circle