Why do I need a DuctMuffler?
The DuctMuffler will reduce sound traveling through ducts, i.e. loud music from adjacent rooms, snoring, speech and noise generated by the furnace blower.

How do I install a DuctMuffler?
Simply remove a section of air duct from the offending duct run and insert a DuctMuffler. The DuctMuffler is a heavy product and must be properly supported using duct support brackets available at your favorite Home Center.

How effective is a DuctMuffler?
Please note that every 3 dBA in noise level reduction may cut your perception of noise by half. Visit the noise page in this FAQ section.

Does the DuctMuffler affect airflow through my ducts?
No. The open bore of the muffler is the same as the duct in which it is installed. There are no baffles or barriers.

Does it require any maintenance?
No. No maintenance is required.

Does it require electricity?
No, the DuctMuffler is a passive device.