June 8, 2015

What’s Nexxt for Lunos?

During my recent visit to Lunos in Berlin I was introduced to their newest high performance ventilation systems.  475 will introduce the following exciting solutions as soon as they are available:

  • the Nexxt – a semi-central HRV with heat recovery efficiency of up to 90%, delivering ventilation up to 60CFM (winter 2015/16)
  • RA 15-60 – exhaust fan for milder climates, delivering ventilation up to 35CFM (available now)
  • ALD R160 – passive air inlet with filter and high sound absorbtion (available now)

All of these devices use the same 6″/160mm Lunos tubes that make installation of the e2 and eGO in exteriors walls efficient and easy to airseal.

Nexxt close upNexxt

This semi-central device uses a counter-flow heat exchanger, combining the advantages of a decentralized (ductless) HRV and a centralized system. It is very quiet and is attached with a single split tube (like the eGO uses) to the exterior. This means that for the fist time a single penetration in your airtight layer suffices to connect a HRV to the inside of the building.

The unit can be mounted in three different positions – recessed and ducted, flush (protruding just 2″, while still allowing duct connections), and surface mounted. This gives you full flexibility in both new construction and renovation for unit placement and exterior wall detailing.

The Nexxt can respond to input from temperature and relative humidity sensors, and optionally with a CO2 sensor as well.  This gives you the option to automatically run summer bypass on cool summer nights (or not) and/or activate high flow mode when occupancy in the room increases CO2 levels.

The unit draws as little as 5 watts on low flow and offers first class sound protection from exterior noise. Stay tuned for additional info when the product launches at the end of 2015.

Lunos RA15-60 - exhaust fan with sound damper setRA 15-60

To complement the e2 system, and to offer efficient through-wall exhaust ventilation for climates where heat recovery from bathrooms/kitchens is not cost efficient, Lunos has introduced the RA 15-60. It fits in the same installation tube as the e2, but since this radial DC fan (also good for DC/PV powered houses) only takes up 1.5″ (37mm) of this tube, it allows you to fill the remainder of the tube with star-shaped sound absorbers. This can reduce the sound transmission from outside by more than 50dB, making it perform better than most triple pane glass. The fan itself has a sound pressu5ZIIre level of between 22-35dB, so it is primarily used for bathrooms and kitchens. Power consumption is as low as 0.04W/cubic meter/hr and minimum installation thickness is 6.7″ (170mm) if sound absorbing sets are desired.

The RA 15-60 is controlled by a Lunos universal controller – which now also features time lag add on. This module enables you to extend the run time to 0, 6, 15 or 3o minutes beyond a ventilation trigger (light in bath turned on/high humidity event).

Additionally this timing module can also be programmed to exhaust 15 minutes every 2 hours or 30 minutes every 4 hours – making this an ideal plug and play device for controlled exhaust ventilation in mild climates. This module will be available at the end of summer 2015 and anticipated list price is $39.

ALD R160ALD-R160-2012-2W

This passive air-inlet is a non-powered hole in your wall – albeit a bit more sophisticated than just a simple hole. Its benefits include:

  • Controls airflow with a ventilation rate at 8Pa pressure (equal to the result of eGO or RA 15-60 exhaust operation)
  • Similar sound attenuating properties that are also found in the RA 15-60 (up to 55dB while in operation)
  • Includes an automated pressure sensitive wind damper, which prevents over-ventilation from gusts/storms
  • Includes a G3 filter – for filtered fresh air

Exterior covers

We’ve received requests for different (non-round) exterior grilles and will offer two new options in Fall 2015:

1. Hidden exterior grilles (Lunotherm) that integrate very well into EIFS facades (including GUTEX Thermowall system). They allow you to avoid visible ventilation facade penetrations in your building, while not compromising airflow or insulation levels. And they work with standard 6″ diameter Lunos tubes. Prices starting at approx. $139 per unit.

2. Square exterior grilles 1/HWE (black) and 1/HAZ (gray) with an added benefit of an additional exterior noise reduction of 6dB.

We are excited to offer these new products and look forward to seeing them implemented in high performance construction projects in the US in the near future.

exterior grilles - new lunos options

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7 Responses to What’s Nexxt for Lunos?

  1. Chris December 16, 2015 at 1:16 pm #

    When do you expect these products to be in stock?

    • John December 16, 2015 at 3:29 pm #

      Great question, Chris. We don’t have a precise answer for you at the moment. But I can say, we hope to bring them in within the first quarter of 2016. When we know for sure we’ll be announcing it in our monthly newsletter, which you can sign up for on the upper right side on the header of this blog page.

  2. James W. Langston March 10, 2016 at 7:28 pm #

    Would like to have more information about Nexxt.

    • John March 11, 2016 at 3:11 pm #

      Hello James. We’re happy to answer questions. Give us a call or email (click to the Contact link at the top of the page) for any specific questions. As for the release of the Nexxt, we’re now told it will likely be available by the end of May. We will continue to send updates as they come, through our Newsletter. Be in touch.

  3. James W Langston July 10, 2016 at 5:28 pm #

    What are the advantages of the Nexxt over the e2 with a TAC?
    When is the Nexxt expected to be available; the date seems to keep slipping?

    • John July 11, 2016 at 4:48 pm #

      You are correct, the Nexxt release date did slip. But it actually is arriving soon this time. Lunos has given us the ok to begin pre-ordering now, with a ship time planned for late August. As always, we’ll announce in our Newsletter when we get the official word.

      Biggest difference between the two systems is the flow rate (up to 54CFM vs 22CFM max of the e2) and the fact that a single Nexxt unit can ventilate a living space, bedroom, and bathroom. That’s one penetration for several rooms, rather than multiple units and multiple penetrations.

  4. James W Langston August 27, 2016 at 4:32 pm #

    Is the Nexxt available in 115 volts for the US market? A 230 volt Nexxt will not be as popular in the US I think.

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