After living in our current house for almost a year, I figured we should probably have our vents cleaned. I bought a Groupon and scheduling the appointment was quick and easy. Bill came out and informed us that our 12 year old house had NEVER been cleaned and showed us the amount of dust, drywall pieces, and even a can lodged in one of the vents. Needless to say we paid a little more to have the entire system cleaned and tuned up, but Bill did a great job and put our minds at ease knowing that we did the right thing and thankfully didn't have a major system breakdown. I would highly recommend Bill and his crew!