Flow of cooled air - older-style ductwork

Air Conditioning and Heat Pumps · Duct System · printed page 222 (PDF page 223)

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Book index entries

Older Style Ductwork Ducts – Older Style for Air Conditioning Duct System Ducts – System for Air Conditioning

Text in the illustration

return grille
- hot air builds up on upper level
- uneven air temperature
- no upper level returns
- minimal air circulation
air flow
supply register
return ducts
supply ducts
furnace and A/C
cross section

Generated explanation

A house cross section shows a basement furnace and air-conditioning unit connected to supply and return ductwork. Supply ducts feed floor-level registers on the lower and upper occupied levels, while a single return grille is shown at floor level on the lower level. Arrows trace air from the supply registers across the rooms and down the open stairwell toward the return grille, then through the return duct to the equipment. The annotations identify hot air buildup upstairs, uneven temperatures, absent upper-level returns, and minimal air circulation as shortcomings of this older-style duct arrangement.

Components

furnace and air-conditioning unit supply ducts return ducts supply registers return grille stairwell

Defects shown

No upper-level return air grilles Hot air buildup on upper level Uneven indoor air temperatures Minimal air circulation

Related illustrations

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Flow of cooled air - older-style ductwork

· p. 229

A house cross section shows a basement furnace and air-conditioning unit connected to supply registers on two occupied levels and a single lower-level return grille. Supply ducts run beneath the lower floor and rise alon

1254

Flow of cooled air - modern ductwork

· p. 222

A cross section of a two-story house with a basement shows cooled-air circulation through a forced-air duct system. A basement furnace and A/C unit feeds supply ducts serving registers near the exterior wall on both stor