If you are suffering from general condensation, with the most obvious tell-tales being: Wet windows in the morning, wet glazing of tiles after a bath or shower, and the same again when cooking, you could benefit from better ventilation. If you also happen to suffer from mould in these areas, you certainly should be looking to improve your ventilation.
Nobody wakes up one day and says, "I need extra ventilation", without good reason. Ventilation systems are usually ordered to solve a problem, or to prevent a problem before it occurs. We can fix condensation throughout a property, poor ventilation and removing bad smells in kitchens and w/cs - we can't fix water ingress, leaks or rising damp with ventilation alone.
