Ventilation

An ideal air conditioner should heat, cool, clean, ventilate, humidify and dehumidify as needed to provide health and comfort. The second most important objective of air conditioning is to provide ventilation.

Without sufficient ventilation, contaminants generated indoors can lead to health and comfort problems. It is recommended to have at least enough ventilation to exchange the air inside house once every four hours, depending on house design.

Older homes have the tendency to have leakier walls and leakier ducts and typically obtain sufficient ventilation through such leakage. These leakage and infiltration may not be the most energy efficient method to ventilation and is an opportunity for savings.

Most new homes and some existing homes are relatively tight.  Hence, they need mechanical ventilation to meet minimum ventilation requirements.

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