This is a great company. They were recommended to me by my home inspector. I've used them 3 times in the past year. Once to install an air intake vent (on the side of our house) for the furnace at our old address, the second visit was for a furnance cleaning at our new home, and the third was for a complete duct cleaning service and furnance mainternace visit. WOW! Very fast, knowledgeable and professional crew. Well worth the cost for the added peace of mind.