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Index
FAQs
Reference
Fundamentals
Ground Water
(Open-Loop)
Systems
Environment
Equipment
Ground-Coupled
(Closed-Loop)
Systems
Special Considerations
Installations
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No Return-Side Ductwork
Some structures do not have return ductwork at all, a design that assumes the
air delivered to rooms will probably make its way back to the air handler. In
such systems, the air handler is usually in a cold basement or crawl-space and
has to do more work warming this cold air for delivery to the rooms than it
would have if warmer air from the occupied space were available from return
ducts. This type of system is also likely to be unbalanced.
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