![]() ![]() Since your plenums are such a vital piece of your home comfort equipment, we don’t recommend attempting repairs on your own – always seek the help of a professional. They’ll be able to test it and suggest an appropriate replacement. If it’s too big, it may cause your system to work harder than necessary, increasing your utility bills.Ĭontact a licensed HVAC technician if you suspect one of your plenums is the wrong size. If the plenum is too small, it will inhibit airflow. Poorly sized plenumĪn incorrectly sized plenum will negatively impact your whole HVAC system. We recommend supplementing your DIY cleans with professional air duct cleaning every 3-5 years. Though DIY duct cleaning is important and useful, it won’t reach your plenums. To keep your plenums clean, change your air filters every three months. This may cause them to operate inefficiently, diminishing airflow in your home. Over time, your plenums may experience a build-up of dust or dirt. Use silicone caulk and aluminum tape to seal the plenum at its joints. If you find an air leak, the repair is DIYable. has good tips on detecting home air leaks. Simply locate your air handler and check to see if you feel air flowing out of the plenums. If your system cannot achieve the temperature you’ve set on your thermostat, examine your system for a plenum leak. This can cause your HVAC equipment to work overtime, as the heated or cooled air never makes it into your home. While a broken plenum isn’t a frequent cause of HVAC problems, there are occasions when plenums may malfunction and require repair. In fact, you need two for your system to work correctly and circulate air within your home. Do you need a plenum?Ī plenum is a necessary component if you have a central heating and cooling system. Your plenums are the pieces that join your HVAC equipment and your ductwork, allowing circulation between the two. Your air ducts are the vehicle that distributes air from your HVAC system throughout your home. No matter the type of air ducts you have, the plenum is usually always a sheet metal box. Some homes have cylindrical air ducts made of galvanized steel, aluminum, or wire coil covered in durable plastic. Residential air ducts are sometimes also box-shaped and made of sheet metal. Plenums are usually box-shaped and made of sheet metal. They serve as the piece that connects your ductwork to your central HVAC system. Plenums can be considered part of your ductwork. What’s the difference between an air duct and a plenum? On the return side of the air handler, the plenum takes air from inside your home and sends it to your air conditioner or furnace to be heated or cooled. This is how the air from your HVAC system is distributed throughout your home. On the supply side of the air handler, the plenum takes the newly warmed or cooled air and leads it into your ductwork. That air goes from your furnace or air conditioner to the air handler. Your HVAC system creates cool or warm air depending on the season. It connects your HVAC system’s air handler to your ductwork. Looking for HVAC repair? Schedule an appointment with a local expert.Ī plenum is a box made of sheet metal.
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