I knew there was a concern with the way my furnace was working, but there didn’t seem to be enough airflow to get the heat through the pipes. My furnace was running for longer periods, plus the heat was diminished. My husband didn’t know what was wrong, plus we had to call the Heating, Ventilation, plus A/C business, but when the Heating, Ventilation, plus A/C professional arrived, he went to work on the furnace; It took him less than ten minutes to decide the furnace was okay, except it had a lot of dust plus dirt in the air filter, but he asked how long it had been since the air filter had been changed. My husband had it written on the calendar every time he changed the air filter, plus it was only three weeks earlier. The Heating, Ventilation, plus A/C professional opened a small panel in the HVAC duct, plus told us he wanted to call the Heating, Ventilation, plus A/C business. He was thinking we needed our HVAC duct cleaned. He didn’t want to startle the dirt too much, plus said he was going to have the professional HVAC duct cleaning team come to the apartment plus scrub it out. Three days later, there were three boys at the house. They all wore undoubtedly white outfits plus had booties on their feet to keep the apartment clean. They pulled their hose into the basement, plus it was like a sizable vacuum cleaner running. They cleaned, sanitized, plus repaired a few small holes plus cracks. It had been years since my apartment smelled so good. With the lack of dust over the next couple of months, I knew we were going to put HVAC duct cleaning on our list of regular chores to do.