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Introduction 
THE DUCT SYSTEM, used in air heating and air cooling your
home, is a collection of tubes that distributes the heated
or cooled air to the various rooms.
This system can make a big difference in both the cost and
the effectiveness of heating and cooling the home. The duct
system can have an important effect on health of the occupants
through the distribution of indoor air pollution. Changes
and repairs to a duct system should always be performed by
a qualified professional. This section is meant to help
you understand the problems that can affect the duct system
and how you can:
- Save money
- Improve comfort
- Protect health
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