During the summer this leads to the hot air from the attic seeking out the cooler conditioned floors below.
Attic vent open in summer.
The narrow soffit slits allow air to flow freely into your attic.
Hot air is rising so is it smart to open the attic stairs in summer.
Also you place it on the roof top or gable mounted.
This is most notable in the case of attics.
I think you should do the reverse one.
Ridge vent must me installed per the manufactures instructions.
Typically these devices are used in summer when the temperatures are high exceeding 49 degrees celsius.
When the attic becomes part of the home to be heated and cooled open wall gable vents and roof vents are no longer feasible but the underside of the roof the sheathing and rafters can still get.
These are exhaust vents that are installed on the ridge of your roof i e.
Insulation at least r 38 or more is there for heating and cooling.
The house has roof gable and soffit vents.
One last thought attic ventilation is not there to get rid of heat it is there to get rid of excess moisture accumulating from the home.
The airflow pushes the hot air out which is exactly what you need to keep your attic cool during the summer.
Ridge vents are available in a series of pieces or as one long piece.
Since attics are often under insulated poorly sealed and poorly ventilated the temperature environment can be drastically different in an attic than in the rest of the home.
Attic fans come with different models.
Some can have manual switches while others use a thermostat to turn them on and off automatically.
During this brutally hot summer of 2012 i ve left the garage access door open and it dropped the temperature in the attic substantially.
Your attic acts as an insulation between the terrace and the living room.
In the garage is an access door to the attic.
Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof.
They need to be open in the summer.
It can do both.
For having the air conditioner running almost continuously this summer i thought my utility bills were not that.