Today’s airtight construction may actually cause health problems due to the build-up of pollutants and uncirculated sour air. So we need mechanical ventilation, Powerful, energy-efficient exhaust fans or ventilation fans silently exhaust unpleasant or moist air from toilet, kitchen or business area. To get the healthy environment steam, odor etc. should be exhausted from toilet.

Many large campuses, buildings and hotels generally installed with centralize air ventilation system for toilet. Since it is centralize system the main culprit in poor performance is the duct which connects exhaust grills with fan.

To get the desired exhaust airflow from the toilet, air balancing of all grills is must. Insufficient airflow may lead to the above mentioned problems and this is because of duct leakages, improper duct design, improper duct erection and fan under performance.