Ventilation

Ventilation is critical in any climate because it replaces stale indoor air with fresh outdoor air, and flushes out potential pollutants caused by combustion appliances or offgassing materials. Ventilation is especially important in cold climates, where homes are often built tighter and allow less natural air leakage. Ventilation also controls indoor humidity, which is created by activities like cooking, showering, and breathing. If moist air is not exhausted, it can build up to damaging levels, penetrate different parts of the home, such as the walls and roof, and potentially cause moisture problems like mold and rot. You can add mechanical ventilation through fans, vent hoods, or with a heat-recovery ventilator (HRV), depending on the nature of the situation.

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Projects

BrHEAThe Evaluation In an effort to address these issues CCHRC developed the BrHEAThe system in 2011. BrHEAThe is a combined heating and ventilation system which uses one distribution system to provide fresh air and space heating to high-performance homes in cold climates.
Energy Recovery Ventilators (ERVs) in Cold Climates Energy Recovery Ventilators (ERVs) are whole house ventilation systems that exchange stale indoor air with fresh outside air, recovering both heat and moisture from the indoor air to save energy. They could help improve indoor air quality in a cold dry climate like Interior Alaska.
Kenai Indoor Air Quality Study This project examined the most common causes of indoor air quality problems in Southcentral Alaska by monitoring 100 homes for carbon monoxide, carbon dioxide, temperature, relative humidity, and radon.
Mold Survey A survey of mold problems in Alaska Native housing looked at 73 regional or village housing authorities in Alaska and documented over 1700 apartments or homes with some degree of mold problem.
Southcentral Ventilation Study This study monitored nine houses in Anchorage to assess the effectiveness of their ventilation system and compliance with the Alaska Building Energy Efficiency Standard ventilation requirements.