This wind turbine attic ventilator is not mounted properly and will be prone to leak during a heavy rainfall.

This photo shows the correct wind turbine installation. This view if from the roof side or exterior of the house. We should also see a hole cut in the roof decking from inside the attic.

This picture shows ridge vents for attic ventilation. This looks good from the roof side, however the roof decking should be cut back from the ridge to allow the hotter attic air to flow out

Multiple vent provisions shown in this photo.

This bathroom vent fan cover is stopped up. Cleaning is recommended.

View of a power attic ventilator. The advantage of a power attic ventilator is it can move more cubic feet of air than a wind turbine and it is thermostatically controlled so it only runs when the temperature is hot. The down side is the motors fail often.

This view of a power attic ventilator shows the wiring is exposed and not in the thermostat/junction box and missing its cover.