I have had my heater cleaned by various companies over the years but I must say that Ed Seeley did the most thorough cleaning my furnace has ever had! He started by taking apart the stack and cleaning the black residue build-up out of the stack. Then he vacuumed the motor, cleaned the area around the nozzle, replaced the nozzle and the filter. He also ran a test on the efficiency of the heater. Quality workmanship, Excellent Service, friendly and knowledgeable! Thank you Ed Seeley! Bravo!!!