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Originally Posted by donsnider52@gmail.com
I am considering putting a vent in the right and left lower corners of my garage door to reduce heat in the garage especially during the summer months. Will doing this really substantially reduce heat build up in the garage. For example, if the air temp is 95 will the vents keep the garage below 100 degrees. I have good venting in the roof and I plan to keep the retractable stairs to the garage attic down during the summer. Please let me know if you have experience with this.
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A total waste of money and it will weaken your garage door. My neighbor installed an attic fan and those garage door vents. Within a month or so, he turned it off and never used it again. You will get hardly any air flow through the vents. Also, you should not leave the retractable stairs down because that will compromise the fire rating of your garage.