Recovering sensible or total heat, wheels or cubes, optional add-ons like fans and filters and assorted sensors ... it takes some homework to specify the right energy-saving recovery ventilator for your school application.
An engineer with the 9th-largest school district in the United States writes about the IAQ testing and final report that his district commissioned. From offices to classrooms to cafeterias and restrooms, the monitoring was extensive. Read the results and some author comments about acceptable IAQ in schools, the possibility of overdoing fresh air, and the associated costs.
From a missing pipe hanger three floors down to steam traps past their prime, these stories show how steam system problems can originate inside the boiler room or far beyond it. Read more in February issue.