https://www.airflowexpert.com/Dirty ductwork can spike your HVAC energy use by 21 percent, and it's blamed for 90 percent of system failures. Before you flip the furnace on this fall, find out what's really hiding in your vents.
[thoughtful] A study cited by the National Renewable Energy Laboratory found heavily contaminated ductwork can spike a system's energy usage by 21 percent, just from restricted airflow. So, um, today we're talking about why fall, right now, is the window to fix that before winter heating season kicks in.
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