To help prevent a building from sealing in harmful pollutants and moisture, you must have a balanced ventilation system. 50% of your ventilation should be composed of intake systems. Intake systems allow cool and dry air enter a building. The other 50% of your ventilation should be composed of exhaust systems. Exhaust systems allow excess heat and moisture exit a building.
The US FDA recommends a minimum of 1:300 NFVA. this means that 1 square foot of ventilation is needed for every 300 square feet of floorspace. we help calculate the precise ventilation for a healthy and balanced building.