Nick and Brendan cleaned the ductwork for both of my furnaces, and I couldn’t be more pleased. Randazzo’s put in my new (7 yrs ago) furnace. I was concerned that the high efficiency (translate expensive) filter would be preserved during duct cleaning. I called and Randazzo’s recommended Safety King. Nick and Brendan kept me informed and kept my house clean with booties and attention to detail. The before and after pictures helped me see what a good decision I had made. I recommend Nick and Brendan without reservation.