It all began about 3 months ago after a presentation at Duct Diagnostics in Milford, CT when 2 ceu's were being earned by CT Association of Home Inspectors (CAHI) member Tom Morgan. "These guys are great". Tom convinced me to have my ducts cleaned in my 1910 house. It made sense. I am the 4th or 5th owner of the house, and my guess is prior owners never had the ducts cleaned. So, at 7:45 a.m., I received a prompt call on my cell phone from Jim at Duct Diagnostics to confirm his arrival at my vacant rental property. He arrived at 8:00 a.m., was polite, professional and courteous. Two more employees arrived, Leo and Terry. Again, polite, professional and courteous. All three men were hard working, coordinating their plans. Jim informed me that removal of 100+ plus years of dust, dead mice and debris would not only allow for healthy air flow, but it would allow my natural gas-fired furnace to operate more efficiently. Wow. This service was worth every penny. The invoice included photos of my ducts, before and after. What a difference! After 4 hours, they were on their way. They recommend duct cleaning every six to ten years. Voila! I shall call them in the near future. You should too!