Different Types of Ventilation

There are three types of ventilation for single or multifamily residences. Supply, balanced, and exhaust. Exhaust ventilation is very common with builders because it meets code and has low installation costs. These systems typically use a fan in the bathroom. They create negative pressure that draws in poor or even toxic air through the garage, basement, or outside areas, leading to poor indoor air quality. Balance ventilation such as HRV or e r v, uses an internal fan to supply fresh air into the home while simultaneously exhausting an equal amount of stale air. Balanced ventilation is quiet and can be effective in controlling indoor air quality, but tends to be more expensive due to equipment and installation cost. Supply ventilation brings in fresh air from a source and circulates the air through the home. At field controls, we advocate central fan integrated ventilation. Or CFIV. CFIV is a ventilation strategy in which a home's forced air heating and cooling system is used to search calculate interior air and provide dilution air to improve indoor air quality. The benefits of CFIV are far better than exhaust or balanced ventilation. A CFIV system monitors normal HVAC system operation and seeks to optimize circulation and dilution by piggybacking on the central system's normal operating period. Thus minimizing any energy penalty associated with operation of the central fan or other ventilation devices. Balance ventilation and exhaust ventilation do not offer the value nor the comfort that CFIV does. Better air for better living. With fresh air ventilation from field controls.