How much does a CO₂ water softener cost?
The price depends on the model, installation setup and selected options. The residential SoluCalc model starts from €1,900 excluding installation and options.
United Kingdom
United KingdomSalt-free CO₂
water softener
CO₂ technology converts limescale into a soluble form that no longer builds up. As a CO₂ alternative to salt-based water softeners, SoluCalc works without salt, regeneration or water discharge while preserving the water’s natural minerals.
How SoluCalc Works: The CO₂ Water Softener for Your Home
SoluCalc is a salt-free water softening system that protects plumbing and appliances from limescale using CO₂. Unlike traditional salt-based water softeners, 100% of the limescale is transformed into calcium bicarbonate, dissolves in the water without clogging pipes, even at high temperatures. The SoluCalc system is explained in detail in the video below.
Reduce your limescale expenses today!
How much does limescale really cost you every year?
Your information
100 sqm
150 €/months
3 pers.
Is there limescale in my area?
Depending on your geographical region, water hardness can vary significantly and affect your household appliances and sanitary installations. Use our calculator to check the water hardness in your area.
Benefits
The Smart Way to Eliminate Limescale
Comparison
Why is SoluCalc better than salt-based water softeners?
Salt-free, the innovative alternative to salt-based water softeners
No more heavy salt bags to carry or buy regularly. No salty water, no polluting discharge, no sodium in your drinking water. Unlike salt-based water softeners: frequent handling of salt bags, brine discharge, and added sodium.
Essential minerals preserved
Water naturally retains calcium and magnesium, essential for health and taste. Unlike salt-based water softeners: sodium is added and minerals are removed.
Long-lasting and effective limescale protection
Limescale deposits no longer form on taps, boilers, and household appliances, extending their lifespan and improving energy efficiency. Unlike salt-based water softeners: effectiveness depends on refills, and limescale quickly returns if salt is forgotten.
Compact installation and minimal maintenance
A discreet system installed after the water meter. Approximately one CO₂ refill per year, carried out by a professional. Unlike salt-based water softeners: bulky tanks, salt storage, and more demanding maintenance.
SoluCalc, a difference
you can feel
The Smart Investment for Your Home
Protects Your Plumbing
Prevents limescale buildup in pipes, faucets, and fixtures, extending their lifespan significantly.
Saves Energy & Money
Your boiler heats water 25% more efficiently without limescale, reducing energy bills dramatically.
Easier Cleaning
No more scrubbing limescale stains. Surfaces stay cleaner longer with less effort and chemicals.
Extends Appliance Life
Washing machines, dishwashers, and water heaters last years longer without scale damage.
Eco-Friendly Solution
Uses only food-grade CO₂ - no salt, no waste, no environmental impact.
Better Water Quality
Keeps beneficial minerals while eliminating scale problems - healthier for you and your family.
REVIEWS
Discover why more than 40,000 customers are satisfied with SoluCalc
“Solucalc makes watersofteners based on CO2 instead of salt, and I have to say that this works very good. We used the water 5 days without CO2 because the bottle finished, and my god, we had a lot of hard water 'damage' immediately. So very happy with this easy solution that saves space. We had a very good contact with the sales guy and also during installation everything went super smooth.”
“This system is a good alternative if you live in an apartment without the possibility of installing a salt water softener in the basement, as in my case. It works :)”
For professionals
Join the SoluCalc network
With more than 40,000 systems already installed across several European countries, SoluCalc is becoming a modern alternative to traditional water softeners. Take part in this evolution in water treatment and grow your business alongside a fast-growing network.
They Trust Us
Leading companies like IKEA, Aqualibi, Decathlon, and Brussels Airport trust SoluCalc for their limescale prevention solution
Certifications
Our quality and safety certifications ensure the highest standards
Certificate of Sanitary Compliance for Drinking Water
Buildwise test confirms effectiveness
European compliance
Recognized by Test-Achats
Frequently asked questions
Questions about CO₂ water softeners
Key answers for comparing a CO₂ water softener, a salt-based water softener and a salt-free solution.
What is the difference from a salt-based water softener?
A salt-based softener replaces part of the calcium and magnesium with sodium. SoluCalc uses food-grade CO₂ to convert limescale into soluble calcium bicarbonate, without salt, regeneration or brine discharge.
How does a CO₂ water softener work?
The system injects a controlled amount of CO₂ into the water. This reaction converts incrusting limescale into a soluble form that flows with the water and limits deposits in pipes, taps and appliances.
Does the water remain drinkable and mineral-rich?
Yes. CO₂ treatment does not remove the minerals naturally present in the water and does not add sodium. The taste of the water is preserved.
How long does the system last?
SoluCalc is designed for long-term use and comes with a 5-year warranty. Routine upkeep mainly consists of replacing the CO₂ cylinder when needed.
Our services
Installation service
We work with certified technicians nationwide. Your system is installed safely and correctly — hassle-free.
CO₂ refill at home
No need to carry heavy cylinders. We deliver CO₂ cylinders to your door and assist with replacement if needed.
After-sales support
We are available to help with spare parts, technical questions, and warranty requests. We’ve got you covered.
Contact SoluCalc!
Would you like a quote for the installation of a SoluCalc, more information, or personalized advice? Do you have a question, a technical issue, need assistance, or want to replace your CO₂ cylinder? Are you convinced by our alternative to salt-based water softeners and would like to become a partner or certified installer?
