Insulation of walls or full house cooling fan is a good idea to control your house temperature. You can also use some little alternative fan to deal with restricted ventilation at home and all around places. It can be operated at your convenience anytime. There are too many models of battery operated portable fans.
Here you can get a comprehensive information about the different latest model of portable fans with defining their features and guide, so that you can select the best one to use when you feel its need at the time when the temperature goes high.