February 18, 2013

LUNOS e² HRV – data for input into PHPP ventilation sheet

The LUNOS e² through wall heat recovery ventilation, allows you to get a very high efficiency heat recovery efficiency, while keeping installation cost to a minimum because the system is ductless. This system has been tested by the German federal agency DIBt, which reported an average efficiency of 90.6%.   Another great feature of the e² is the very low fan energy required.

We are receiving a growing number of request for the appropriate values to use in the Passive House Institute’s (PHI) PHPP software. Even though the unit is not certified by PHI, it’s efficiency makes it very suitable for use in deep energy retrofits and new construction low energy buildings and passive houses.

Pair of e² through wall HRV installed in Chris Corson’s Deep Energy Retrofit in Maine

The values to use in PHPP 2012 are:

In cell for ventilation efficiency 90.6% (row G, first cell is 126) per DIBt test.

If following the guidelines that PHI uses for certification, deduct 12%, resulting in a 78.6% data input.

The electric ventilation efficiency which includes the power consumed by the controller and AC/DC converter – in cell H-126 use 0.31 W/m3h

PHPP heat recovery and electric efficiency of e² HRV

Humidity recovery is between 20-and 30% (the ceramic core absorbs and re-releases humidity). When using the compressor cooling units sheet in PHPP (for air-conditioned projects), use 20% humidity recovery in cell K15.

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9 Responses to LUNOS e² HRV – data for input into PHPP ventilation sheet

  1. Mark October 13, 2014 at 10:49 am #

    How is a house with eGO and e2 input to PHPP

  2. Karel Jonker May 5, 2015 at 10:27 am #

    Why not get the Lunos products Passive House certified so we don’t have to down grade them in the PHPP?

    That would make more sense if it really is as good as you claim.

    Prove it and get it approved by Passive house.

  3. Ken May 5, 2015 at 2:37 pm #

    Hi Karel,
    The issue is that PHI doesn’t have a protocol to certify these regenerative core type heat exchangers. If they did, we would. They are thinking about how to possibly do it – hopefully in the future they can figure it out.

    As it stands the efficiency has been tested and verified by DIBt (the German Federal testing agency) protocol.

  4. karina February 27, 2016 at 2:15 pm #

    have Lunos E2 and eGo been tested and certified by AMCA and/or HVI? are they labeled?

    • John March 2, 2016 at 11:55 am #

      Hello Karina,

      Lunos fans have been third-party verified by DIBt in Germany. Deutsches Institut für Bautechnik (DIBt) is a member of EOTA (European Organisation for Technical Assessment). We are happy to send you copies of the certification papers if you are interested, though they are in German, of course.

  5. Karina March 5, 2016 at 3:57 pm #

    How have customers in states like Massachusetts dealt with lack of AMCA or HVI labels? If DIBt is in german, it is unlikely to satisfy local officials.

  6. Rui Oliveira October 25, 2016 at 6:00 pm #

    Can you put the link on again. This link “PHI uses for certification (pdf)” from text.

    • John October 26, 2016 at 9:38 am #

      Thank you for pointing that out. We haven’t found a good replacement on PHI’s site yet. We’ll update once we do.

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