If you start to notice less air coming out of your vents than usual, there might be an obstruction in the ductworks, and the most official cause of restricted airflow is a dirty filter. It’s simple to forget to substitute a filter that you installed a few months ago… A good way to remember how long ago it has been since you installed a filter is to write the date you installed it on the filter itself when you first put it in. This can help you keep track of when you should substitute it. But make sure it is the right filter. The wrong air filter could also be a cause of low airflow from your Heating as well as A/C, then due to concern of airborne viruses, more people have begun purchasing higher grade filters. These filters have a tight weave to strain out more tiny particles. This can improve your air quality, however the downside is that more effort is required from your Heating as well as A/C system to push out air through the filter; Older plus lower powered units simply cannot handle those types of filters! Sometimes your ducts are blocked because of a rug or piece of furniture that is locationd in front of a vent. If you have a zone control system in your home, a damper could be stuck in its closed position blocking air flow. This can be absolutely manually fixed yourself. Over the years, ductwork can become disfigured or loose plus allow air to escape underneath or above your house. Construction debris, insulation fibers, small household objects, or even a rodent could be invading your ductwork restricting air flow, however when you need a helping hand figuring out what the cause of your blocked ductworks might be, an Heating as well as A/C professional could help you clear them out.