I initially contacted GreenPro to clean my A/C ducts. Their pricing seemed very reasonable. As part of the service they went up into my attic where my air handler was located. They discovered mold all over the unit, quite normal from moisture accumulation and years of neglect. I was only too happy to employ their skills to totally get rid of the problem. The before (scary) and after photos were a testament to their skills. We were very pleased with their services.