1.   Water Hygiene and Ventilation - the specialised cleaning service for industrial and commercial ventilation systems, water tanks and cooling towers.

2.   Effective Heating -- The Clio is equipped with an airmix heating and ventilation system so that the heating matrix is hot at all times for immediate response when required.

3.   Keeping windows closed had no effect on the level of pollutants, which enter the car through the ventilation system.

4.   An off-the-shelf pesticide sprayer could then blow the miasma into a building ventilation system.

5.   And the ventilation system is run by the wind.

6.   And the ventilation system in the chemistry building does not meet current health standards.

7.   Another way to evaluate the efficiency of the attic ventilation system is by calculating the attic area and comparing it to the vent area.

8.   At home or work, a forced-air ventilation system can help, if it is kept in working order.

9.   Bars, gaming clubs and hotel lobbies were granted an exemption in the hope that sophisticated ventilation systems could be developed to reduce the health risk of secondhand smoke.

10.   BP Amoco officials dispute the accusations, and say the medical investigators have largely ruled out the ventilation system as a cause of the brain tumors.