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[TNskoooYMc]OpenERV

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  * Window mount try 12

[TNskoooYMc]OpenERV

  * Home
  * Source Code
  * Store
  * About us
  * Learn more
  * FAQ
  * Other projects
  * Contact us
  * Window mount try 12
  * More
      + Home
      + Source Code
      + Store
      + About us
      + Learn more
      + FAQ
      + Other projects
      + Contact us
      + Window mount try 12

 
Fresh outdoor air all year round.

The TW4 decentralized Energy Recovery Ventilator transfers clean
outdoor air inside and moves polluted air outdoors, while harvesting
~90% of the heat energy - so you get fresh air without the downsides
of heating or cooling it.


The WM12 is basically two TW4 modules side by side in a piece of
tough polypropylene foam, so you can put it in a window.


The design is now in beta.  People who request a unit by email will
be contacted one at a time as units become available, starting with
those most able to handle potential complications that come with the
beta phase.

  * Provides fresh air during hot or cold weather, without allowing
    the loss or intrusion of (much) heat energy.  

  * Core performance figures: 

      + ~90% sensible, ~80% latent heat recovery on medium speed. 
        Slightly higher at low speed, slightly lower on max.  This
        varies very little with temperature, humidity or season.

      +  High air flow - 60 CFM actual average net fresh air in heat
        recovery mode on maximum speed.

      + Extremely quiet  - ~0.25 Sone (~37 dBa) on medium,
        essentially inaudible on low, ~42.5 dBa on max. 

  * ~21x greater rate of return on investment, compared with typical,
    conventional ductless ERV units, due to long term design,
    maintenance costs, higher energy recovery and other factors
    combined.   ~3x the return on investment of typical ducted HRV/
    ERV units. >10x ROI of photovoltaic panels in many areas like
    Ottawa, Canada.  See spreadsheet on learn more page for details.

Other details include:

  * Optional HEPA (H13) filter, using widely available filters
    (requires the outdoor plate attachment and hood)

  * Designed and built to last for >50 years, for greatly superior
    return on investment, with no long term component availability
    concerns.

  * Can be configured to work with common home automation systems,
    including Google Home, Alexa and Home Assistant for scheduling,
    many kinds of sensor-based operation, interfacing with knobs and
    switches without wiring, etc using MQTT. 

  * Can be controlled over WiFi using MQTT, including from a phone.

  * Very low electrical energy consumption -  2 watts on low, 7 watts
    at maximum power.

  * Effectively reduces CO2 levels, reduces transmission of airborne
    pathogens and improves Indoor Air Quality in all metrics.

  * Storm valve add-on to prevent intrusion of air or water during a
    storm (requires exterior plate and hood)

  * Automatic wind compensation using a very nice pressure sensor, to
    ensure balanced air flow in both directions, and a precisely
    controllable influence on total net pressure in the building.

 

Learn more!

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