Library Hours
Monday to Friday: 9 a.m. to 9 p.m.
Saturday: 9 a.m. to 5 p.m.
Sunday: 1 p.m. to 9 p.m.
Naper Blvd. 1 p.m. to 5 p.m.
American Society of Heating, Refrigerating and Air-Conditioning Engineers.
Try a search for ASHRAE standard