I live next door to a 7-11. There are 4 Hussman

I live next door to a 7-11. There are 2 Commercial Hussman units on the roof...they are noisy...over the years have been serviced....have been "up-graded" to smaller units....but the noise has become a "quality of life issue." Rather than simply complain to 7-11, can I offer a solution, a way of deflecting the sound away from my home, w/two bedrooms on that side, not to speak of the backyard noise spillover...again, I'm looking for a suggestion to offer 7-11 before I go to City Hall. Thanks from SanFran. CA.