Enduce E1

Shower floor drains with 75 % energy recovery.

Reducerat klimatavtryck

Reduced
climate footprint

Reducerad energiförbrukning

Improved
energy performance

Sänkta driftkostnader

Lowered
operating costs

Ökat fastighetsvärde

Increased
property value

Reducerad resursförbrukning

Reduced
resource consumption

A new standard.

Our Enduce E1 energy recovery shower floor drain is simple, efficient and a real resource saver. The heat from used shower water is passed through a heat exchanger that preheats the cold water for the shower mixer, reducing energy and hot water consumption by up to three quarters.

Uniquely, the Enduce E1 solution is passive (no electrical connections, pumps or replacement filters) combined with world-leading efficiency, making it incredibly cost-effective and robust. An integrated cleaning system prevents clogging of the heat exchanger, which has previously been a barrier to high-efficiency energy recovery from shower water. 

Enduce energiåtervinnande duschgolvbrunn

Why Enduce E1?

The building sector accounts for a large share of energy use.

The housing and real estate sector is the sector that uses the most energy globally. In Sweden, the housing and services sector accounts for 39% of final energy use.
Source
Eurostat, Energy consumption in EU households, 2020.

A significant part of the energy consumption is used for hot water production.

In a modern home, hot water consumption accounts for as much as 40% of the total energy consumption for heating.
Source: Based on Boverket's energy consumption for hot water production 25 kWh/m2 and an energy performance of the building 62 kWh/m2.

The shower is the major hot water consumer in households.

The shower combines the hottest water flow on average with by far the longest duration for each tap. Most often, heated water goes straight down the drain with no energy recovery.
Source: Sevela P et al, University of Innsbruck, Unit of Energy Efficient Building, Potential of waste-water heat recovery in reducing the EU's energy need, 2022

Energy is by far the largest consumer of resources. not the water.
Resource consumption is mainly related to water heating rather than water consumption.  

Source: Erika Wallén, Life cycle assessment of drinking water - a study of a waterworks in Gothenburg, 1999 and Pratima Singh et al-, Energy pattern analysis of a wastewater treatment plant, 2012. 

Energy recovery is most useful in the shower.
By placing the energy recovery unit in the shower, energy losses to the environment are minimized, providing the highest possible efficiency and amount of energy recovered.

Source: R. Saagi et al., City-wide model-based analysis of heat recovery from wastewater using an uncertainty-based approach, 2022, as well Passive House Institute, The potential of waste-water heat recovery systems, 2022.

The greatest benefit at the lowest cost to your wallet, society and the climate.

Enduce E1 works passively without the need for replacement filters, electrical connections or pumps, making it robust, uncomplicated and very cost-effective. Materials are carefully selected to reduce climate impact. The plate heat exchanger offers world-leading efficiency compared to alternative solutions. In short - a new standard.

Illustration av den termiska utvecklingen inom byggnadsteknik som infraröd termografi
Enduce E1

Enduce technology reduces the power requirement for showering from 20 kW to around 6 kW. The energy in the used shower water preheats the cold water for the shower mixer, thereby reducing energy and hot water consumption by up to three quarters.

Saving energy and power:

  • Efficiency 71-75 % (RISE 2022)
  • Efficiency improvement 450 kWh/person year
  • Energy performance improvement (BBR) 7-19 kWh/m2 Atemp
  • Cuts power peaks up to 30 % (1h time base)
  • Climate payback 0.2 - 3 years
  • Economic return on investment approx. 4 - 23 % (1-5 dwellings, average use).
Traditional shower

Learn more at our webinars

Welcome to our open webinars where we present Enduce E1. During 45 minutes you will get a deeper understanding of our solution and the opportunity to ask questions. 

New! We now offer webinars with different focus areas. See which ones interest you most via the link below. A warm welcome to you!

FAQ

How you design the shower area and where you position the shower room ventilation are important factors that influence how energy efficient and comfortable the shower experience will be.
According to independent studies, recovering hot water energy at the application level directly in the shower area is the most efficient way to recover hot water energy that would otherwise be lost.  
More than 96% of resource consumption is used to heat shower water, while water use accounts for only about 4%. 
The solution's operating principle is that the energy in the continuous flow of shower water is heat exchanged against the continuously incoming cold water.
The floor drain is designed to be fully repairable. This means that all internal and moving components can be replaced if something breaks.   
The connection of the waterproofing to Enduce E1 is done via traditional clamping frame connections for either waterproofing foil for tiled floors, or for plastic carpet.

With Enduce E1

Reduced operating costs
SEK/year
Energy saving
kWh/year
CO2 reduction
kg/year
Repayment period
year
Energy cost for the shower
SEK/year
Economic returns
%
Improving energy performance
kWh/m2 Atemp

Adjusting parameters

I want to calculate the energy savings from outside:
Hot water heating
Energy cost (average over time)
kr/kWh
Design of the shower area
(energy loss)
Domestic hot water consumption
1000 kWh/person/year
Accommodation per shower room
st
Share of hot water for showering
%
Total household shower time
minutes/day
Water flow in the shower
liters/minute
Shower water temperature
C
Cold water temperature
C
Hot water consumption
kWh/m2 Atemp
Surface area Atemp
m2
Share of hot water for showering
%
Number of shower rooms
st
Hot water consumption
kWh/m2 BOA
Surface area BOA
m2
Share of hot water for showering
%
Number of shower rooms
st
Energy cost for shower without Enduce
3 600 SEK/year

Contact us about your project

We are happy to help you with specific calculations for your project, whether it is new construction or renovation. Contact us for a tailor-made value calculation.

Questions and answers

The Enduce E1 is robust and based on proven industrial technology adapted to modern bathrooms. The floor drain is designed according to Nordic building standards and has undergone the same tests as other products on the market. 

Enduce has an immediate impact and is a long-term solution, which continues to pay off over time. In residential buildings, tap water is one of the biggest energy wasters - the heat goes straight down the drain. With Enduce, up to 75% is recovered, significantly reducing operating costs. For an apartment building, this can mean a reduction of over 10-15% for the entire property.

Visit our FAQ for answers to frequently asked questions and in-depth information. On our document page you will also find detailed instructions and reports.

Porträtt av Aleksander Teir på Enduce

You are welcome to contact me!

Alexander Teir
aleksander.teir@enduce.se
079-103 56 56