I called several companies before deciding on Paul at the Duct Cleaning Specialists. His rate was competitive but what I felt was a good sign were his thorough questions about our house when requesting a quote. I also liked that he is a certified gas technician who could do a proper cleaning on our very dirty furnace. Paul arrived early on his scheduled day however couldn't do the cleaning due to a lack of parking available in front of our house. He happily came back a couple days later (on Christmas Eve day, in fact) with a portable option in case he couldn't park in front and his hoses couldn't reach our house. He was very delightful, professional and thorough. He also helped us figure out a heat distribution problem. I was also pleasantly surprised to see on his invoice that the furnace cleaning was included free of charge, even though he quoted me $70 extra for the service! I would highly recommend this company to anyone who likes dealing with an honest, professional and genuinely nice guy.