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Water Softener Sizing and Prices: Flow, Hardness and Tank Size

Herritech engineering teamUpdated 20 October 20264 min read

Water Softener Sizing and Prices: Flow, Hardness and Tank Size
Pictured: H-TECH automatic water softener system.
Quick answer: A softener removes calcium and magnesium (hardness) by ion exchange: hard water passes through resin that swaps them for sodium, and the resin is cleaned (regenerated) with salt brine. Size it by two things: the flow you need (tonnes or m³ per hour, T/H) and how hard your water is times how much you use between regenerations. H-TECH softeners run from KSh 60,400 (1 T/H) upwards.
Key facts
  • Ion exchange swaps hardness for sodium; salt brine regenerates the resin
  • Size by flow (T/H) and hardness × daily volume
  • "0844" = an 8 × 44 inch resin vessel
  • Test hardness before choosing
On this page
  1. How a Softener Works
  2. How to Size a Softener
  3. H-TECH Water Softener Prices
  4. Brine Tanks and Salt
  5. Softener or RO?
  6. Frequently asked questions

How a Softener Works

  1. Service: hard water flows through resin beads that hold calcium and magnesium and release sodium.
  2. Backwash: the control valve reverses flow to loosen the bed.
  3. Brine draw: salt water from the brine tank washes the hardness off the resin.
  4. Rinse and refill: the resin is rinsed and the brine tank refilled for next time.

Valves can regenerate on a timer or after a set volume: manual vs automatic control valves.

How to Size a Softener

  1. Flow: the peak water flow you need, in m³/h (1 T/H = 1,000 litres per hour).
  2. Hardness: from a water test report (how to read a test report).
  3. Volume between regenerations: daily use × days between regenerations. Harder water or higher use needs more resin.

The model codes show the resin vessel size: 0844 is 8 inches wide and 44 inches tall; 1465 is 14 × 65 inches.

H-TECH Water Softener Prices

Current listed prices incl. VAT (updated 20 October 2026).

Brine Tanks and Salt

Current listed prices incl. VAT (updated 20 October 2026).

Use clean softener salt and keep the brine tank topped up: brine tank and salt guide.

Softener or RO?

A softener removes hardness only. If the water is also salty (high TDS) or has fluoride, RO is needed; softeners are often installed before RO to protect the membranes. See do I need a water softener?.

Frequently asked questions

How much is a water softener in Kenya?

H-TECH softeners start from KSh 60,400 for 1 T/H and go up with size.

How do I size a water softener?

By the peak flow you need (T/H) and the hardness times the volume used between regenerations.

What does 0844 mean on a softener?

The resin vessel is 8 inches wide and 44 inches tall.

Does a softener remove salt from water?

No, it removes hardness; salty (high-TDS) water needs RO.

How often does a softener regenerate?

It depends on hardness and water use; the valve regenerates on a timer or after a set volume.

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