Heat recovery ventilator
When people hear that making a home air-tight improves the energy efficiency, many often wonder about air quality. Because many older homes were made to "breathe," there's typically sufficient air flow for that not to be a problem, according to builder.
Very well sealed buildings, on the other hand, like this one will have a heat recovery ventilator, which brings in outdoor air. It also heats that incoming outdoor air with the air that's been exhausted, as shown on this model.
July 24, 2009 4:00 AM PDT
Photo by: Martin LaMonica
| Caption by: Martin LaMonica
Conversation powered by Livefyre