Here's the deal, as much as we love summer, we don't love what it's doing to our interiors. With the recent influx of heat and painstaking humidity in many parts of the country, you may have begun to notice that your AC vents are starting to glisten. And not in a good way. This definitely isn’t the kind of dewy, summery glow we had in mind. Southern states and humid coastal locations are hit the hardest—even outside of summer months.