A couple of winters ago, we started seeing the same pattern in our house. Some rooms were taking longer to warm up, and the furnace seemed to stay on much more often than before. I suspected dust and debris in the ductwork were restricting airflow and making the system work harder. Comfort Clean has been our go-to duct service for years. We decided to book them again because they had done a thorough job in the past and always explained everything clearly. After the cleaning, the airflow improved noticeably and the house reached the set temperature faster. Our next two energy bills were lower than the ones from the previous months, and the system sounded less strained overall.