The Harvey Crown Vs Harvey TwinTec S4
The Harvey Crown vs Harvey TwinTec S4
Choosing between the Harvey Crown and Harvey TwinTec S4 can be confusing because both are Harvey-made twin-tank water softeners. This page compares the key differences in flow rate, efficiency, warranty, salt and suitability for UK homes.
The Harvey TwinTec S4
The TwinTec S4 is one of Harvey’s more advanced systems and has a similar technical specification to the Harvey Arc. With smart shuttle metering, it is low maintenance, efficient and designed for a wide range of British plumbing systems.
- Twin-tank, non-electric system
- 56L/min flow rate
- Approx. 300g salt and 17L water per regeneration
- Approx. 11 minute regeneration
- 1–10 bar pressure range
- Standard block salt
- 10-year parts warranty
The Harvey Crown
The Harvey Crown is another Harvey twin-tank model and has been a popular choice in the UK. Compared with the S4, the original content lists a lower flow range, higher salt and water use per regeneration, and a shorter warranty.
- Twin-tank, non-electric system
- Approx. 30–50L/min flow rate
- Approx. 350g salt and 23L water per regeneration
- Approx. 11 minute regeneration
- 1–8 bar pressure range
- Block salt
- 5-year warranty
Harvey Crown vs TwinTec S4 specification comparison
| Feature | Harvey TwinTec S4 | Harvey Crown |
|---|---|---|
| System type | Twin tank, non-electric | Twin tank, non-electric |
| Flow rate | 56L/min | 30–50L/min |
| Salt per regeneration | Approx. 300g | Approx. 350g |
| Water per regeneration | Approx. 17L | Approx. 23L |
| Regeneration time | Approx. 11 minutes | Approx. 11 minutes |
| Dimensions | Approx. 49cm H x 20.5cm W x 44cm D | Approx. 46cm H x 21.2cm W x 40cm D |
| Pressure | 1–10 bar | 1–8 bar |
| Warranty | 10 years on parts | 5 years listed in old page content |
Why choose the TwinTec S4?
The TwinTec S4 has a higher listed flow rate and pressure capacity, uses less salt and water per regeneration, and comes with a longer parts warranty. It is designed to suit different UK plumbing systems including gravity-fed tanks, combination boilers and high-flow unvented hot water cylinders.
Why do I need a twin-tank water softener?
If you live in a hard water area, a twin-tank water softener helps protect your home from limescale damage. It can provide a reliable supply of softened water and is especially useful for homes with higher water demand.
- Helps protect taps, shower heads and fittings
- Helps reduce scale in boilers and hot water systems
- Protects appliances such as dishwashers and washing machines
- Reduces time and money spent on descalers
- Helps reduce scale deposits in bathrooms and kitchens
Quality and warranty
The S4 is positioned as a premium system with robust testing and a longer warranty. The original page content also notes that the S4 is made using recycled plastics and is more efficient to run than the Crown.
Ready to buy or need help?
Need help comparing Harvey softeners?
Contact North East Water Softeners for practical advice on the Harvey Crown, TwinTec S4 and the best model for your home.