Your new or existing cooling and heating equipment is only as good as the system that delivers air to every room.Central
air conditioners, heat pumps and forced air furnaces rely on a system
of ducts to circulate air throughout your home. To maintain comfort and
good indoor air quality, it is important to have the proper balance
between the air being supplied to each room and the air returning to
your cooling and heating equipment. Leaky ducts can cause an unbalanced
system that wastes energy. Sealing your ducts is one solution that can
improve your system's ability to consistently cool and heat every room
in your home.
Whether you're having new equipment installed or working to improve the
performance of your existing cooling and heating system, you should
have your duct system checked.
Most duct improvement repairs require the assistance of a contractor.
A good contractor will:
Identify any duct leaks with diagnostic equipment.
Seal your ducts with mastic, metal-backed tape, or aerosol
sealant. Duct tape should not be used because it can not withstand high
temperatures and will not last.
Test airflow after ducts are sealed.
Insulate your ducts where it
counts to keep the air at its desired temperature as it moves through
the system. The contractor should use duct insulation material rated at
R-6 to insulate ducts located in unconditioned spaces such as an attic
or crawlspace.
Conduct a combustion safety test after ducts are sealed to be sure all gas or oil-burning appliances are working properly.
