I moved into a home in Gilbert that looked like it hadn't been cleaned in 10 years, and was scared of what might be in the ducts after seeing the layer of grunge on the air filter. I called A-Z immediately to take care of that. Mike and Jacob arrived on time, and set to work. They were engaging and didn't mind my questions. They showed me before and after pictures of the vents, cleaned everything thoroughly, including vent covers and cleaned up beautifully. In short, they did a fabulous job and were very engaging to work with. In fact, Jacob gave me pointers on keeping up my wood floors! I'll definitely put duct cleaning on my calendar and hope these two are still on the job next year.