The technician Mike was parked in front of our house a little ahead of the scheduled appointment time. I invited him in and we walked through locating the vents. He verified the number with his invoice and that the estimate given over the phone was correct. I signed the contract and he got started. He was absolutely meticulous. He worked quickly, carefully and safely. I was shown numerous before & after photos taken with a digital camera as the work progressed. The after photos showed spotless air ducts. I was impressed. I would recommend Ductworks to anyone needing this type of service. The work performed and the technician were both definitely 5 star quality!!