In designing systems for health care facilities, care must be taken to minimize the spread of contamination. Particular attention must be given to air changes and filtration.

Where do you turn for quick, reliable information on air quality in hospitals?

Visit ASHRAE Online, where individual chapters of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Handbook series are now available online.

The chapters, peer-reviewed to ensure the accuracy and thoroughness of information, can be purchased and downloaded from the following ASHRAE Handbooks: 2000 HVAC Systems and Equipment, 1999 HVAC Applications, 1998 Refrigeration, and 1997 Fundamentals.

The cost to purchase and download chapters is $29, $39, $49 or $100, depending on size. Chapters are available in either inch-pound (I-P) units of measurement or the International System of Units (SI).

More information on health care facilities can be found in the “Health Care Facilities” chapter of the 1999 ASHRAE Handbook for $49 .

To purchase ASHRAE Handbook chapters, visit and go to Document Download.