Prevailing winds |
Mechanical roof ventilator units sperform best if influence of prevailing wind is minimal. |
Don't |
Unit above ridge is exposed to crosswinds. Exhaust capacity may be reduced ue to back-pressure effects. |
Do |
Roof unit relatively sheltered from prevailing winds suffers less from back-pressure effects. |
Propriety information courtesy of FANTECH (Australia) - (NOT TO BE REPRODUCED) |