I live in a really old building and ever since I moved here I've been getting a wierd smell whenever I've been using my heater air ducts. After many worthless tries to convince my landlord to get somebody to get the air ducts cleaned, I decided to just get someone myself and get it over with. I called Downtown Air Duct Cleaning and scheduled an appointment. They showed up right on time and did a walk through around my place to locate all vents while explaining to me how the air duct cleaning process works. Before they left they cleaned the building dryer vent and reconnected it properly (apperently the dryer duct was never installed properly and the lint was blowing all over the place.. What a mess!!). Overall the service was top notch and they solved my problem so 5 stars for that!!!