Water softener & reverse-osmosis installer in Luxembourg
Have a water softener or reverse-osmosis unit installed in Luxembourg: qualité-eau.lu connects you with approved partner installers. Free quote, nationwide.

Get a free quote
Installation and after-sales service across Luxembourg. Free quote.
Have a softener or reverse-osmosis unit installed in Luxembourg
qualité-eau.lu does not install directly: we connect you with specialised partner installers (adoucisseur-eau.lu, osmoseur.lu) who operate in every municipality of the Grand Duchy. You describe your need, you receive a free quote, and a professional fits your equipment with after-sales service.
How it works, in 3 steps
1. Free diagnostic: you give your municipality and your need (limescale, drinking water). 2. Quote: a partner installer prices the solution suited to your water. 3. Installation: fitting by a professional, with maintenance and after-sales service. You stay free at every step.
qualité-eau.lu is an intermediary: we do not sell or install equipment ourselves. The quote and installation are handled by our partners.
Softener installer: against limescale throughout the house
If your water is hard (above 20 °fH), an ion-exchange softener fitted at the water inlet removes limescale and protects pipes, water heater and appliances. It is the reference solution for comfort and appliance lifespan. Check your municipality's hardness before requesting a quote.
Reverse-osmosis installer: for drinking water
As all of Luxembourg is classified a nitrate vulnerable zone, an under-sink reverse-osmosis unit secures your drinking water by removing nitrates, pesticides, PFAS and heavy metals. It is fitted alongside a softener, or on its own if your water is already soft. Installation and filter changes handled by our partners.
| Need | Equipment | Where |
|---|---|---|
| Limescale, appliances, comfort | Softener | Water inlet (house) |
| Drinking water (nitrates, PFAS) | Osmosis unit | Under the sink |
| Both | Softener + osmosis | House + kitchen |
Coverage: every municipality in Luxembourg
Our partner installers operate across the Grand Duchy, from the Gutland to the Oesling. Check your municipality profile for your water hardness and the most relevant solution, then request your free quote.
Frequently asked questions
Who installs a softener or reverse-osmosis unit in Luxembourg?
qualité-eau.lu connects you with approved partner installers (adoucisseur-eau.lu, osmoseur.lu) covering every municipality in the country, with a free quote, fitting and after-sales service.
How much does it cost to install a softener?
Expect roughly €1,200 to €3,500 for an installed softener, and €350 to €1,200 for an under-sink reverse-osmosis unit. The exact price depends on your water and home — hence the free, personalised quote.
Is the quote really free and with no obligation?
Yes. You describe your need, a partner gets back to you with a price, and you remain free to accept or not. No obligation.
Which municipalities do you cover?
Every municipality in Luxembourg. Each municipality profile shows the local hardness and the suitable solution.
Softener or osmosis: which should you install?
The softener treats limescale throughout the house (hard water); the osmosis unit purifies drinking water (nitrates, PFAS). Depending on your water, one, the other, or both. The free diagnostic guides you.