Two radically different approaches
The salt water softener and the LIMPEO electromagnetic device both fight the same problem — limescale — but with opposing philosophies. The softener removes calcium and magnesium ions from the water (ion exchange). LIMPEO transforms the crystalline form of limescale (calcite → aragonite) without altering the water's composition.
Detailed comparison
| Criterion | Salt water softener | LIMPEO electromagnetic |
|---|---|---|
| Technology | Ion exchange (resin + salt) | EM waves at controlled frequencies |
| Effect on water | Removes Ca²⁺ and Mg²⁺ | Transforms calcite into aragonite |
| Sodium added | Yes (4.6 mg/L per °f removed) | No |
| Minerals preserved | No | Yes |
| Scale reduction | Near total (TH → 0°f) | 88% (non-adhesive scale) |
| Scientific validation | Well-known technology | Peer-reviewed studies (Coey, Kobe, Amiri) |
| Salt required | 60–240 kg/year | 0 |
| Water wasted | 6,000–24,000 L/year (regenerations) | 0 |
| Maintenance | Annual servicing + salt + technician | None for 10 years |
| Installation | Plumber required, water supply cut | 10 minutes, no plumber |
| Eco-friendly | No (brine, sodium, wasted water) | Yes (0 discharge, 0 chemicals) |
| Safe for infants | No (ANSES advises against softened water for bottles) | Yes (water unchanged) |
Advantages of the salt water softener
- TH reduced to 0°f — water is genuinely “soft”, eliminating all visible scale marks
- Proven technology — used for decades, predictable results
- Immediate, measurable effect — TH drops from the moment of installation
Advantages of LIMPEO
- 0 added sodium — no health risk (sodium risks)
- Minerals preserved — calcium and magnesium remain in the water (WHO recommends min. 20 mg/L Ca, 10 mg/L Mg)
- 0 consumables, 0 maintenance — no salt, no resin, no technician
- 0 water waste — no regeneration cycles
- Eco-friendly — zero polluting discharge
- Installation in 10 minutes — no plumber, no water supply cut
- 25% energy savings — elimination of the insulating scale layer
Which choice for which situation?
- You want zero visible scale → The softener reduces TH to 0°f, eliminating all marks. LIMPEO reduces scale by 88% but very light traces may remain.
- You want to preserve minerals → LIMPEO retains calcium and magnesium. The softener removes them.
- You want zero maintenance → LIMPEO has no consumables. The softener requires salt and regular servicing.
- You are a tenant → LIMPEO installs in 10 minutes without modifying the plumbing. The softener requires a plumber.
- You are environmentally conscious → LIMPEO has zero discharge. The softener releases brine and wastes thousands of litres of water.
Discover our technology, consult the scientific studies and explore our product range. Calculate your savings with our online tools.
FAQ — LIMPEO vs Water Softener
Is LIMPEO as effective as a water softener?
The practical result is comparable for equipment protection: no more scale on pipes, the water heater and appliances. The difference: the softener reduces TH to 0°f (chemically soft water) while LIMPEO prevents scale from depositing while preserving minerals (TH unchanged but scale is non-adhesive).
Is a water softener dangerous to health?
Softened water is not dangerous for healthy adults as long as sodium stays below 200 mg/L (WHO threshold). However, ANSES advises against softened water for infants, and people with hypertension or renal insufficiency should monitor their sodium intake.
Can both systems be installed together?
It is possible but unnecessary. Both technologies target the same objective. LIMPEO alone is sufficient to protect the entire installation while preserving the water's minerals.
Which is more economical in the long term?
LIMPEO is a one-time investment with no recurring costs. The softener involves purchasing salt, an annual maintenance contract and resin replacement. Over 10 years, the total cost difference is very significant in favour of LIMPEO. Compare on our products page.
Is LIMPEO suitable for very hard water (>35°f)?
Yes. LIMPEO transforms calcite into aragonite regardless of water hardness. The harder the water, the greater the savings.