The First Now House
The Retrofit Process: Ventilation
Install a heat recovery ventilator
Having reduced the air leakage of the Now House, we needed a ventilation system to ensure high quality indoor air. A heat recovery ventilator (HRV) was installed to exhaust cooking smells, humidity and stale air from the home, and capturing the heat from the air before expelling it. This recovered heat is then used to warm the fresh air coming into the home.
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The Retrofit Process
To achieve our goal of a near zero energy retrofit we made the following changes to this home. As all existing houses have a unique set of conditions and characteristics, the application of the Now House process to another house would produce different design specifications. What follows is not a prescription for the near zero retrofit of all homes.