My family and I never really suffered from allergies but when we moved into our house, we noticed ever time our a/c would kicked on, one of us would start sneezing. I suspected it was coming from the vents. Wasn't really sure what to expect, never had my vents cleaned before. Spoke to Nicolas and he answered every question I had. I wish I had pictures of what came out of those vents, disgusting. The first time I turned the a/c back on, you could instantly smell the difference. No more allergy attacks! All and all, a superb job done. Thanks!