During deploy, technicians seal duct leaks and steadiness registers, getting better airflow, reducing hot and cold spots

https://writeablog.net/hronousvyc/hamilton-on-furnace-repair-avoiding-frozen-pipes-during-outages

During set up, technicians seal duct leaks and balance registers, making improvements to airflow, cutting back sizzling and bloodless spots, and boosting furnace potency severely.