The American Society of Heating, Refrigerating and Air-Conditioning Engineers has a new manual for Standard 90.1.

The revised users manual for ASHRAE’s energy standard will make it easier to conserve, society officials said.

The American Society of Heating, Refrigerating and Air-Conditioning Engineers’ new manual for Standard 90.1, “Energy Standard for Buildings Except Low-Rise Residential Buildings,” has just been released. It includes extensive changes to incorporate the 44 addenda approved since the 2004 edition, said Keith Emerson, who oversaw the changes.

“The Appendix G changes will be particularly useful to people involved with projects that are trying to achieve a certain amount of savings over and above the minimum requirements of the standard,” Emerson said.

Detailed instructions, calculations and compliance forms are included. Sections include HVAC systems, water heating, power and lighting.

The cost is $93 plus shipping and handling, or $74 for society members.

For ordering information, visit www.ashrae.org/bookstore.