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Water Softener

10 Best Water Softener 2025 in the UK

#1

Winner

Harvey Blo

Harvey

Harvey Block Salt for Water Softeners | Original Pure Grade A Food Quality Salt | 3 Bags, Securely Boxed | Each Bag Contains 2 Salt Blocks | Efficient Softening Solution

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#2
KINETICO B

KINETICO

KINETICO Block Salt - 6 bags of 2 blocks of salt each (12 blocks)

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#3
BWT WS555

BWT

BWT WS555 Hi Flow Electronic Demand Block/Tablet Water Softener, Blue, 14 Litre

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#4
BWT WS355

BWT

BWT WS355 Standard Electronic Water Softener, Blue, 14 Litre

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#5
BWT WS455

BWT

BWT WS455 Hi Flow Electronic Demand Block/Tablet Water Softener, Blue, 10 Litre

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Related Products

#6
Halite Sal

WSG

Halite Salt for Water Softener, Pure Grade A Food Quality for Twintec, Kinetico and All Block Salt Softener (3)

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#7
Water Soft

HSD Himalayan Salt Direct

Water Softener Salt Blocks 100% Genuine Food Grade water softener salt block Compatible with All Water Softener Machine, Best For Laundry Kitchen Dishwasher Industrial use Salt Block (3 Pack)

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#8
Monarch Wa

Monarch Water

Monarch Water Ultimate Midi HE WRAS-approved Water Softener Includes 15mm Hoses, Suitable for up to 6 people

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#9
iSpring WC

iSpring

iSpring WCS15KG Water Softener, Hi Flow Electronic Demand/15,000 Grain/100% Limescale Removed with Backwash Feature for Households, Up to 6 People, 9 Litre

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#10
BWT SALTBL

BWT

BWT SALTBLO Water Softener Block Salt, White, 8 kg, Set of 2 Pieces

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Our Top Picks

#1

Winner

Harvey Block Salt for Water Softeners | Original Pure Grade A Food Quality Salt | 3 Bags, Securely Boxed | Each Bag Contains 2 Salt Blocks | Efficient Softening Solution

9.8  score

3%OFF

Harvey Block Salt for Water Softeners | Original Pure Grade A Food Quality Salt | 3 Bags, Securely Boxed | Each Bag Contains 2 Salt Blocks | Efficient Softening Solution

Harvey

9.8  score

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The Harvey Block Salt for Water Softeners provides a solid solution for those using block salt water softeners. With three securely packaged bags, each containing two 4kg salt blocks, users receive a total of 24kg of Grade A-quality salt designed to enhance water softening efficiency. This product is suitable for standard models from brands like Harvey, Kinetico, Crown, Monarch, TwinTec, and Minimax, though it’s important to note it is not compatible with specific models like HarveyArc, Minimax Innova, and TwinTec Cobalt due to their different salt requirements.

The Grade A purity meets stringent BS EN973 standards, ensuring reliable performance and efficient removal of minerals that cause limescale buildup, thus maintaining the operational effectiveness of your water softener. Crafted in the UK, it reflects quality through meticulous manufacturing practices. However, users with models requiring Mini Curve Salt Blocks should look for alternatives.

Its notable best-seller ranking and high customer reviews indicate good acceptance among DIY enthusiasts, making it a trustworthy option for regular regeneration cycles. Users seeking a dependable and efficient product for maintaining their water softening systems will benefit from this offering, provided their models are compatible.

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#3

BWT WS555 Hi Flow Electronic Demand Block/Tablet Water Softener, Blue, 14 Litre

9.3  score

BWT WS555 Hi Flow Electronic Demand Block/Tablet Water Softener, Blue, 14 Litre

BWT

9.3  score

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The BWT WS555 Hi Flow Luxury Water Softener is a compact and versatile option that fits conveniently in kitchen cupboards, making it ideal for those with limited space. Its 14-litre capacity allows it to handle moderate water softening needs, though it might not be suitable for larger households requiring higher grain capacity. One of the standout features is its compatibility with both salt and tablet forms, providing flexibility in choice and potentially offering better salt efficiency and ease of handling.

Installation is made simple with the included kit, and it operates under sink with an AC/DC power source, accommodating various setups. A generous warranty of 5 years for parts and 2 years for labor provides peace of mind, enhanced by the free home commissioning service. The product is manufactured using BS6920-certified materials, ensuring safety and reliability.

The unit features a high flow rate, which suggests good performance in maintaining water pressure. However, it lacks clarity on the presence of a bypass valve, which is essential for maintenance and uninterrupted water supply during regeneration cycles. The build is robust, weighing 22.5 kg, which might be a consideration for those with limited lifting capability during installation. This product is best suited to individuals or families needing a reliable, space-saving water softening solution.

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Buying Guide for the Best Water Softener

Choosing the right water softener for your home is essential to ensure you have access to soft water, which can help prevent scale buildup in your pipes and appliances, improve the efficiency of your water heater, and make your skin and hair feel softer. To make an informed decision, you need to consider several key specifications that will determine the effectiveness and suitability of the water softener for your specific needs.
Grain CapacityGrain capacity refers to the amount of hardness minerals (like calcium and magnesium) a water softener can remove before it needs to regenerate. This spec is important because it determines how often the system will need to regenerate, which affects both water and salt usage. Grain capacities typically range from 20,000 to 80,000 grains. For a small household with 1-2 people, a lower capacity (20,000-30,000 grains) may be sufficient. For larger households with 4 or more people, a higher capacity (40,000-80,000 grains) is recommended. To pick the right one, consider the number of people in your household and your average water usage.
Regeneration TypeRegeneration type refers to how the water softener refreshes its resin beads to continue removing hardness minerals. There are two main types: time-initiated and demand-initiated. Time-initiated systems regenerate at a set schedule, regardless of water usage, which can lead to inefficiency. Demand-initiated systems regenerate based on actual water usage, making them more efficient and cost-effective. If you have fluctuating water usage or want to save on water and salt, a demand-initiated system is a better choice. For consistent water usage, a time-initiated system may suffice.
Salt EfficiencySalt efficiency measures how effectively a water softener uses salt to regenerate its resin beads. This is important because higher salt efficiency means lower operating costs and less environmental impact. Salt efficiency is often expressed in terms of grains of hardness removed per pound of salt used. Look for systems with higher efficiency ratings if you want to minimize salt usage and reduce maintenance costs. If you are environmentally conscious or want to save on salt, prioritize models with high salt efficiency.
Water Flow RateWater flow rate indicates how much water the softener can treat per minute, usually measured in gallons per minute (GPM). This spec is crucial because it affects the water pressure in your home. Flow rates typically range from 7 to 20 GPM. For smaller households or homes with fewer water fixtures, a lower flow rate (7-10 GPM) may be adequate. For larger homes with multiple bathrooms and high water usage, a higher flow rate (15-20 GPM) is necessary to ensure consistent water pressure. Choose a flow rate that matches your household's water usage patterns to avoid pressure drops.
Resin TypeThe resin type in a water softener is the material that captures hardness minerals. There are standard resins and high-capacity resins. Standard resins are suitable for most households and provide good performance. High-capacity resins are more durable and can handle higher levels of hardness, making them ideal for areas with extremely hard water. If you live in an area with moderately hard water, standard resin will suffice. For very hard water, consider high-capacity resin to ensure long-lasting performance and efficiency.
Bypass ValveA bypass valve allows you to divert water around the water softener, which is useful for maintenance or if you need to use untreated water for certain tasks. This spec is important for convenience and flexibility. Some systems come with a built-in bypass valve, while others require you to purchase it separately. If you anticipate needing to bypass the softener frequently, look for models with an easy-to-use built-in bypass valve. For occasional use, a separate valve may be sufficient.