Heat Recovery Systems

Drain water heat recovery systems uses the heat of the waste water to preheat the fresh water. This is one of the few ways to reduce the energy needed to heat water without sacrificing comfort. For more on passive heat recovery from wastewater, see Passipedia
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Name	Efficiency Class	Nominal Efficiency	Dead Time	Flow Rate	Pressure Loss	Drinking Water	Wastewater	Climate zones	Location/Avaliability	Date certified
Component Manufacturer
ES-Drain Herwin-Energie BV	phB	50%	5 s	8 l/min	0.17 bar	1/2"	DN 50	Independent \| Cool, temperate	Netherlands (NL)	Mar 2018
Joulia Twinline 10P-830 LF joulia sa	phB	60%	5 s	8 l/min	0.26 bar	1/2"	DN 50	Cool, temperate	CH \| NL \| BE \| AT \| DE	Dec 2020
Joulia Inline 5P-630 joulia sa	phC	41%	5 s	8 l/min	0.28 bar	1/2"	DN 50	Cool, temperate	CH \| NL \| BE \| AT \| DE	Dec 2020
ZYPHO iZi 40 ZYPHO	phC	37%	5 s	8 l/min	0.27 bar	1/2" AG	DN 50	Independent	PT \| AT \| AU \| BE \| BG \| BR \| CH \| CZ \| DE \| EE \| FR \| GB \| GR \| IE \| IT \| JP \| NL \| PL \| SI \| ZA	Jul 2020
ZYPHO PiPe DW65 ZYPHO	phA	64%	5 s	8 l/min	0.24 bar	1/2”AG 3/4”IG	DN 50	Independent	PT \| AT \| AU \| BE \| BG \| BR \| CH \| CZ \| DE \| EE \| FR \| GB \| GR \| IE \| IT \| JP \| NL \| PL \| SI \| ZA	Sep 2021
Showersave QB1-12 Q-Blue B.V.	phB	57%	5 s	8 l/min	0.21 bar	1/2" IG	DN 50	Independent	NL \| BE \| CZ \| DE \| DK \| FR \| GB \| SE \| SK	Feb 2017
Showersave QB1-16 Q-Blue B.V.	phA	64%	5 s	8 l/min	0.25 bar	1/2" IG	DN 50	Independent	NL \| BE \| CZ \| DE \| DK \| FR \| GB \| SE \| SK	Feb 2017
Showersave QB1-21 Q-Blue B.V.	phA	69%	5 s	8 l/min	0.32 bar	1/2" IG	DN 50	Independent	NL \| BE \| CZ \| DE \| DK \| FR \| GB \| SE	Feb 2017

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