Joulia

Your shower has a secret

The secret

  1. 40 °C01

    The shower runs

    40°C at the showerhead, still around 30°C when the water reaches the floor. That heat no longer has to go down the drain.

  2. 30 °C02

    Warm water meets copper

    Shower water flows over the Joulia heat exchanger. Heat moves across without a pump and without electricity.

  3. 10 °C03

    Cold water enters at 10°C

    Mains water passes through the copper tube inside the drain and gradually recovers that energy.

  4. 25 °C04

    It leaves tempered

    At around 25°C at the mixer, much less hot water is needed for the same comfort.

The Joulia drain is installed like a standard shower drain — with no added energy and no maintenance. Order your units directly; Fiilm takes care of delivery.

Order sheet

Ref. 3-73-17-0.1 · Installation height 9 cm

Options
Approximate price1'880 CHF / unité
Subtotal1'880 CHF

Indicative price, calculation basis — final quotation tailored to the project.

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Customer account

Joulia configurator by fiilm

Your shower can recover part of the energy it loses every day. Do you take intense showers or rather low-flow ones? Compare a conventional shower with a shower equipped with the Joulia system.

Wasted heat → recovered heatA discreet channel. Savings that repeat with every shower.
up to 60%energy savings
30 yearslifespan
0 effortlow-tech, no intervention

1. Choose your situation

The configurator adapts the questions, figures and arguments to your profile.

2. Your usage

Goal: recommend the right model and simply explain the value to the end customer.

Advanced assumptions
Editable value. Example France/Switzerland: 0.10 to 0.40 CHF/kWh.
Clearer than a technical flow rate: low, standard, comfortable or intense.
Communication setting: maximum impact shown in the prototype.
Used to calculate the net extra cost to amortise.
Estimated annual savings
CHF 610
For this plumbing installer profile, this represents about 1'456 showers per year and 2'033 recoverable kWh.
CHF 17'217savings over 30 years
1.8 yearsestimated payback
1'456showers per year
Annual cost without JouliaCHF 1'220
Annual cost with JouliaCHF 610

Product recommendation

Joulia-Inline 5P recommended: new build / maximum performance. Indicative height: 12 cm. Indicative gross price: CHF 1'930.

Estimated net extra cost: CHF 1'080Recovered energy: 2'033 kWh/yearRecovery assumption: 50%Selected shower flow: standard (9.2 l/min as technical assumption)

Simple explanation

With a conventional shower, the heat of the water goes down the drain. With Joulia, this heat preheats the incoming cold water. Comfort stays the same, but the energy bill goes down.

Impact on my budget

Customer argument: same comfort, same gesture, discreet channel, but less hot water needed for each shower.

Calculation prototype. Results are indicative and must be validated according to the project, exact 3P/5P/6P/10P model, energy price, installation type, installation conditions and, where relevant, SIA 385/1 annex K.

Benefits

  • Économie d'énergie

    La chaleur des eaux usées préchauffe l'eau froide entrante — jusqu'à 50 % de récupération sur la douche.

  • Sans énergie ajoutée

    Système passif : aucune alimentation, aucune pièce mobile, aucune consommation supplémentaire.

  • Ressource préservée

    Moins d'eau chaude à produire — un geste quotidien au service d'une gestion responsable de l'eau.

  • Intégration discrète

    Caniveau de douche linéaire intégré au sol, esthétique préservée et pose maîtrisée.

Relevant project

First case study in preparation.

Technical data

  • Un échangeur intégré au caniveau transfère la chaleur des eaux de douche (~30 °C) à l'eau froide entrante, qui arrive préchauffée au mitigeur.

  • Jusqu'à 50 % de récupération sur l'eau de douche. L'économie dépend du profil d'usage — estimez-la avec le configurateur Joulia.

  • Aucun entretien actif : système passif sans pièce mobile ni alimentation. Le caniveau se nettoie comme un caniveau de douche standard.

  • Résidentiel, hôtellerie, fitness, vestiaires — partout où le volume de douches rend la récupération rentable. À l'échelle d'un bâtiment, le gain est multiplié.

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