The hot air rises and cold air falls which makes the fan rotate.
No power roof fan.
The main reasons for choosing a solar fan are ease of installation and environmental considerations.
The master flow erv5 power roof vent is the master flow erv5 power roof vent is a great overall investment in attic ventilation.
At the moment solar attic fans are considerably more expensive than similar size wired models.
Northeast shady side of roof 78 9 degreesnortheast side with radiant barrier 74 degrees.
It could reverse the natural flow of hot air out the ridge vent.
Temp 92 f at 5pm.
Southwest sunny side of roof no insulation 105 degrees 12 151 rafter bay over with radiant barrier 71 9 degrees 12 15 on the shady side of the roof the results were as follows.
While these fans use no additional power it takes many years to recoup the difference in cost.
After attic fan installation ac still off during day.
The remington solar ventilation attic fan is completely the remington solar ventilation attic fan.
During workdays would leave air conditioner off when leaving in the morning.
The attic fan kept my house cooler by 8f compared to pre fan installation days.
If air is drawn in through the ridge vent while it s raining it might pull rainwater in with it which could lead to leaking or mold in the attic.
Temp 84f at 5pm.
The roof ventilation fan applies the theory of convection between natural wind and air to accelerate and transform any parallel airflow into vertical so as to improve the indoor ventilation.
This was observed on numerous days following the installation.
So the indoor heat stink and dust are exhausted effectively.