> Even some multilevel parkings do that (they don't even have enclosed walls). Don't enclosed parking garages use more energy? Because of dangerous exhaust ga

> Even some multilevel parkings do that (they don't even have enclosed walls). Don't enclosed parking garages use more energy? Because of dangerous exhaust gases from cars (carbon monoxide, etc.), some kind of ventilation is required[1]. Building open-sided garages allows natural ventilation, which uses no electricity. Enclosed garages must have exhaust fans, so they would use more electricity. I'm not sure why you'd build an enclosed parking garage if you had a choice. Perhaps it's useful in cold climates to block the wind on cold winter days, but that is unlikely to be a good trade-off in Austin. --- [1] see: https://wginc.com/open-or-closed-does-my-parking-garage-require-exhaust/ https://wginc.com/open-or-closed-does-my-parking-garage-requ...