Designed in Copenhagen · Hard-water country
Your water,
rensed.
Rensed is Danish for cleansed. Sol pairs premium replaceable filtration with intelligent water measurement — it records every shower automatically and connects to the Rensed app over Bluetooth.
First deliveries reserved for founding members. No spam — one letter when Sol ships.
See how Sol works ↓- G½ universal fit
- 110 mm halo head
- No phone needed in the shower
The problem
Most of Denmark showers in hard water.
Limescale film
Mineral deposits build up on hair and skin with every rinse — dulling colour, drying scalp, tightening skin.
Chlorine & metals
Treatment residues travel from the pipe to your bathroom, stripping the oils your hair and skin depend on.
Invisible use
The shower is the home's biggest hot-water habit — and the only appliance nobody measures.
Rensed Sol
One tool. Every detail earns its place.
Kul — Front
A 316L steel lever sets the flow; a discreet LED ladder shows exactly how much water you're using.
1 / 8 · swipe to revolve
Rain
The everyday spray. Full, even, unhurried — water the way it should have arrived.
Mist
A fine, gentle veil for the face and colour-treated hair. Soft on purpose.
Pulse
A rhythmic massage stream for shoulders and neck at the end of a long day.
Scalp
Focused reach through thick hair, straight to the skin that grows it.
The mode ring
One turn.
Four waters.
On the product it's an engraved ring of champagne steel you rotate with one hand. Here, try it with one click — the ring turns, the water changes.
Engraved metal ring · champagne finish
Inside the handle
Replace the part.
Never the product.
Sol filter cartridge
Filtration measured by actual use
A replaceable cartridge sits inside the handle, built on a premium filter-media strategy now in laboratory validation. Sol tracks the cartridge by the litres that actually pass through it.
- Life counted in measured litres — not calendar guesswork
- Replaced in seconds, no tools — the handle twists open
- Replacement recommended in the app, ordered in one tap
Intelligence module
Replace the intelligence, not the whole shower
All of Sol's electronics — sensors, long-life battery, Bluetooth radio and memory — live in one dry module, sealed away from the water path and designed to be swapped as a single serviceable unit.
- Measures every shower on the device — no phone in the bathroom
- Sessions stored locally for days or weeks, then synced over Bluetooth
- Battery end-of-life means a new module — never a new Sol
- 110 mm spray assembly
- 265 mm tall · 280–340 g target
- G½ BSP connection
- Sealed wet / dry separation
How Sol works
Sol measures. Sol remembers.
Water use, temperature and duration are measured automatically on every shower. The session is stored inside Sol even when your phone is elsewhere, then synchronises with the Rensed app over Bluetooth when the paired phone reconnects.
Your phone does not need to be in the bathroom — Sol stores each shower and synchronises later
The data chain — from shower to Drops
Water starts and Sol wakes — measuring litres, temperature and duration on the device itself. No phone required.
Rensed Drops
Saved water becomes currency.
Sol measures every shower against your household's baseline — what the same shower would have cost through your old head. Use less, and the verified difference is paid back in Drops.
- 1
Measure
Litres, temperature and duration on every session — measured on Sol itself and stored locally until your phone reconnects.
- 2
Verify
Each session is checked against a conservative baseline — calibration, plausibility, no double counting. Only verified litres count.
- 3
Earn
Verified litres mint Drops on Rensed's controlled ledger — credit toward membership, filters and services. Final rates are set at launch.
Drops are a closed reward, not a cryptocurrency — never traded, not redeemable for a fixed cash amount, and minted only after a verified saving. Programme terms are finalised at launch. Figures shown are illustrative.
1,260 litres
Saved per month · illustrative
42 kWh
Hot water avoided · est.
91 kr
Saved · estimated
+126 Drops
Minted from verified litres · illustrative
3 / day
8 min
One cartridge at this pace
≈ 3.0 months
Tracked in measured litres — replace when it's used, not on a date
Kul
Matte charcoal
Gran
Deep spruce
Same champagne steel, two moods. Both colourways carry the identical 316L hardware, engraved wordmark and the small Danish flag — because it is designed, and will be assembled, in Denmark.
The film · 0:10 loop
Made to be held.
The halo head balances at the wrist, not the shoulder — you feel it the first time you pick it up.
Membership
Own the shower, or let it look after itself.
Sol Membership
99 kr /month
- Sol hardware included — 799 kr refundable deposit
- Replacement filters included, timed by measured litres
- Six-month initial period, then monthly rolling
Own it outright
1,999 kr once
- Sol is yours — replaceable filter and electronics module
- Cartridges 299 kr, roughly every three months
- Add Shield anti-scale in-line later — nothing to rebuild
Shield — Rensed's in-line anti-scale module — helps inhibit limescale formation and reduce hard-water deposits. Sol + Shield membership from 129 kr/month at launch.
Launching first in Denmark
Be first under
better water.
Founding members get first delivery, the 99 kr founding price, and a personal water profile for their postcode — how hard your water runs, and what Sol will do about it.
One letter when Sol ships. Unsubscribe any time.
Designed in Copenhagen · © 2026 Rensed