A. Leaky, torn, and disconnected ducts
B. Poorly sealed registers and grills
C. Leaks at furnace and filter slot
D. Kinks in flexible ductwork restricting airflow

Solutions

E. Properly sealed ducts
F. Registers and grills tightly sealed to ducts
G. Sealed furnace and filter slot
H. Well-insulated ducts in unfinished areas
I. Straightened flexible ducts with improved airflow

South Salem Plumbing will:

• Inspect the whole duct system, including attic and crawlspaces.
• Evaluate the system's supply and return air balance. Many systems have air return ducts that are too small.
• Repair damaged and disconnected ducts and straighten out flexible ducts that are tangled or crushed.
• Seal all leaks and connections with mastic, metal tape, or an aerosol-based sealant.
• Seal all registers and grills tightly to the ducts.
• Insulate ducts in unconditioned areas (like attics, crawlspaces, and garages) with duct insulation that carries an R-value of 6 or higher.
• Include a new filter as part of any duct system improvement. The contractor should evaluate air flow after repairs are completed.
• Ensure there is no backdrafting of gas or oil-burning appliances, and conduct a combustion safety test after ducts are sealed.