I had my cold air return replaced and added a 5" Carbon Filter. The tech had all of the components needed for the job and was very professional. These guys know what they are doing from the Sales Call, measurements to the final Installation. My older furnace now has better circulation and the air in the house feels cleaner. With a family of five, a dog and two cats, there is no shortage of hair and dust in this house. I will be upgrading my equipment in 2018 and Randazzos will be doing the job! Excellent work Randazzo's! I strongly recommend these guys for HVAC work!