A TODO SOLosmosis
Direct-flow 1 : 1 reverse osmosis with stable TDS between glasses and no initial osmotic rejection — exactly where every other direct-flow system fails.
When you open the tap, the water sitting in the membrane comes out loaded with accumulated osmotic rejection: the first glass arrives with sky-high TDS and inconsistent taste. You have to let the water run… and pour it away.
Our system eliminates the initial osmotic rejection: stable TDS from the first glass to the last. Open the tap and drink. No waiting, no wasted water, no taste surprises.
Traditional RO systems filter so slowly they need to store water in a tank. Ours filters on demand.
💡 What does GPD mean? Gallons per day: the standard measure of an RO system's flow rate. Our unit produces up to 600 GPD — about 2,270 litres of filtered water a day. That is why it needs no tank: water comes out filtered instantly, at ≈1.6 litres per minute.
The included faucet features a smart LED light that measures the TDS (total dissolved solids) of the water you are dispensing and tells you instantly:
Prefer to keep your current faucet, or use a dual or triple-outlet one? The system can be installed with any faucet — you lose the LED indicator light, everything else works exactly the same. And at night, the included faucet doubles as a night light, guiding you to your glass without turning the kitchen lights on.
6 filtration stages in just 2 quick-change filters. No tools, no technician, no getting wet.
The unit also warns you with acoustic indicators when a filter reaches the end of its life. Impossible to forget.
We compared it with the best-known premium direct-flow system on the market. The numbers speak for themselves:
| A Todo Sol unit RO-J-600 · 600 GPD | Waterdrop G3P800* 800 GPD | |
|---|---|---|
| Unit price | €379 | €999.99 — almost 3× more |
| Filters to maintain | 2 (PAC 1 + RO 2) | 3 (CF + CB + RO) |
| Filter cost per year | ~€72.50 → ~€6/month | ~€175 → ~€15/month |
| RO membrane | €55 · every 2 years | €139.99 · every 2 years — 2.5× pricier |
| Other filters | €45 · a single filter a year | ~€105 a year — 3 replacements at €34.99 |
| Replacements guaranteed | Until 2040 | — |
| 10-year total unit + filters | ≈ €1,104 | ≈ €2,750 — 2.5× more |
Over 10 years you'd have paid ≈ €2,750 for the premium alternative versus ≈ €1,104 with A Todo Sol: over €1,600 saved — the equivalent of four brand-new RO-J-600 units.
* Waterdrop G3P800: official list prices for the unit and its G3-N1CF, G3-N3CB and G3P800-N2RO filters at waterdropfilter.eu, July 2026. Indicative comparison.
Subscribe and we remember for you: every year the right filter arrives at your door, with free shipping and automatic invoicing.
When buying your unit, tick "Add filter plan" in the shop and it activates with the same payment — no extra cost today.
Leave your details and we will set it up in a minute (also for machines bought outside this shop):
Water in, water out and reject water. Nothing else. The system includes every part and tube you need to install it under the sink or wherever suits you best.
Thanks to the built-in pressure pump, osmosis water reaches every point of use — not just one tap.
The secret: the built-in pressure pump. Unlike systems that rely on your mains pressure, the A Todo Sol unit drives the filtered water with its own pump. That extra pressure is what lets it feed any tap — the included LED faucet, your usual tap, or a dual or triple-outlet one — and share the water across multiple outlets at once: ice makers, fridges with water dispensers, coffee machines…
Connect it to your fridge, ice maker or coffee machine too: the built-in pump delivers osmosis water to every point of use. Crystal-clear ice and limescale-free coffee, from the same system.
Kitchen tap with two or three ways? Fully compatible. Just note: with your own tap you lose the LED status light — filtration stays exactly the same.
The included faucet gives off a soft night light (always on) that guides you to your glass of water at night, without turning the kitchen lights on.
Being a direct-flow system, it needs no storage tank: water is filtered on demand, the moment you open the tap. More free space in the cabinet and zero stagnant water.
of your body is water. Proper hydration affects your energy, your skin, your digestion and your focus every single day.
recommended per day. When water tastes great, drinking it stops being a chore — you and your family drink more and better.
of plastic to carry, store and throw away. Top-quality water straight from your tap, at a fraction of the cost.
Full equipment warranty. And behind it, an installation company with more than 800 clients that answers the phone.
Replacement filter production guaranteed until 2040. Your investment won't be orphaned in two years, as happens with brands that disappear.
You have 14 days from delivery to try it at home. Not convinced? Send it back and we refund you. That is your legal right of withdrawal — and our confidence in the product.
Membrane €55 every 2 years, composite filter €45 per year. Maintenance from ~€6/month: the lowest on the market.
Step-by-step installation, control panel, filter replacement, troubleshooting and warranty: the complete RO-J-600 manual, updated and online (in Spanish). Printable as PDF.
The composite filter once a year (€45) and the osmotic membrane every two years (€55). The unit warns you with an acoustic signal when it's time, and the LED faucet confirms it with the colour of the light.
Yes. Installation is simple — water in, water out and reject water — and the system comes with every part and tube. If you prefer, ask us about professional installation.
Yes: you can install it with your own faucet. You lose the LED water-quality light; the filtration is exactly the same.
GPD stands for gallons per day, the standard measure of an RO system's flow rate. 600 GPD is about 2,270 litres a day — ≈1.6 litres per minute: it fills a glass in about 5 seconds. That flow rate is what makes a tankless design possible.
Water is filtered on demand (no tank) with a ratio of one litre of reject water per litre filtered — far more efficient than traditional systems, which waste 3–4 litres for every litre you drink.
Yes. You have 14 calendar days from delivery (legal right of withdrawal) to return it: try it calmly at home and, if it does not convince you, write to us via the chat or at info@atodosol.es. We will explain how to send it back and refund your order as soon as we receive it.
We ship to mainland Spain. Shipping costs €7.99 (VAT included) on orders under €200 and is free from €200.
Prices include VAT · Shipping to mainland Spain: €7.99 (free from €200)
Direct flow 1:1, 6 stages, LED faucet, all parts and tubes included. 3-year warranty.
€399 €379
Replace every 2 years. Availability guaranteed until 2040.
€55
Replace yearly. Availability guaranteed until 2040.
€45
The osmosis system is our newest product, but we have spent years filling roofs with sunshine: solar panels, batteries, solar pergolas and EV chargers, with our own installation team and more than 800 customers behind us.